Adding upstream version 8.0.3.HEADupstream/8.0.3upstreamdebian

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

155 files changed, 15456 insertions, 0 deletions

diff --git a/web_src/js/bootstrap.js b/web_src/js/bootstrap.js
new file mode 100644
index 00000000..c707979c
--- /dev/null
+++ b/web_src/js/bootstrap.js
@@ -0,0 +1,109 @@
+// DO NOT IMPORT window.config HERE!
+// to make sure the error handler always works, we should never import `window.config`, because
+// some user's custom template breaks it.
+
+// This sets up the URL prefix used in webpack's chunk loading.
+// This file must be imported before any lazy-loading is being attempted.
+__webpack_public_path__ = `${window.config?.assetUrlPrefix ?? '/assets'}/`;
+
+// Ignore external and some known internal errors that we are unable to currently fix.
+function shouldIgnoreError(err) {
+  const assetBaseUrl = String(new URL(__webpack_public_path__, window.location.origin));
+
+  if (!(err instanceof Error)) return false;
+  // If the error stack trace does not include the base URL of our script assets, it likely came
+  // from a browser extension or inline script. Ignore these errors.
+  if (!err.stack?.includes(assetBaseUrl)) return true;
+  // Ignore some known internal errors that we are unable to currently fix (eg via Monaco).
+  const ignorePatterns = [
+    '/assets/js/monaco.', // https://codeberg.org/forgejo/forgejo/issues/3638 , https://github.com/go-gitea/gitea/issues/30861 , https://github.com/microsoft/monaco-editor/issues/4496
+  ];
+  for (const pattern of ignorePatterns) {
+    if (err.stack?.includes(pattern)) return true;
+  }
+  return false;
+}
+
+const filteredErrors = new Set([
+  'getModifierState is not a function', // https://github.com/microsoft/monaco-editor/issues/4325
+]);
+
+export function showGlobalErrorMessage(msg) {
+  const pageContent = document.querySelector('.page-content');
+  if (!pageContent) return;
+
+  for (const filteredError of filteredErrors) {
+    if (msg.includes(filteredError)) return;
+  }
+
+  // compact the message to a data attribute to avoid too many duplicated messages
+  const msgCompact = msg.replace(/\W/g, '').trim();
+  let msgDiv = pageContent.querySelector(`.js-global-error[data-global-error-msg-compact="${msgCompact}"]`);
+  if (!msgDiv) {
+    const el = document.createElement('div');
+    el.innerHTML = `<div class="ui container negative message center aligned js-global-error tw-mt-[15px] tw-whitespace-pre-line"></div>`;
+    msgDiv = el.childNodes[0];
+  }
+  // merge duplicated messages into "the message (count)" format
+  const msgCount = Number(msgDiv.getAttribute(`data-global-error-msg-count`)) + 1;
+  msgDiv.setAttribute(`data-global-error-msg-compact`, msgCompact);
+  msgDiv.setAttribute(`data-global-error-msg-count`, msgCount.toString());
+  msgDiv.textContent = msg + (msgCount > 1 ? ` (${msgCount})` : '');
+  pageContent.prepend(msgDiv);
+}
+
+/**
+ * @param {ErrorEvent|PromiseRejectionEvent} event - Event
+ * @param {string} event.message - Only present on ErrorEvent
+ * @param {string} event.error - Only present on ErrorEvent
+ * @param {string} event.type - Only present on ErrorEvent
+ * @param {string} event.filename - Only present on ErrorEvent
+ * @param {number} event.lineno - Only present on ErrorEvent
+ * @param {number} event.colno - Only present on ErrorEvent
+ * @param {string} event.reason - Only present on PromiseRejectionEvent
+ * @param {number} event.promise - Only present on PromiseRejectionEvent
+ */
+function processWindowErrorEvent({error, reason, message, type, filename, lineno, colno}) {
+  const err = error ?? reason;
+  const {runModeIsProd} = window.config ?? {};
+
+  // `error` and `reason` are not guaranteed to be errors. If the value is falsy, it is likely a
+  // non-critical event from the browser. We log them but don't show them to users. Examples:
+  // - https://developer.mozilla.org/en-US/docs/Web/API/ResizeObserver#observation_errors
+  // - https://github.com/mozilla-mobile/firefox-ios/issues/10817
+  // - https://github.com/go-gitea/gitea/issues/20240
+  if (!err) {
+    if (message) console.error(new Error(message));
+    if (runModeIsProd) return;
+  }
+
+  // In production do not display errors that should be ignored.
+  if (runModeIsProd && shouldIgnoreError(err)) return;
+
+  let msg = err?.message ?? message;
+  if (lineno) msg += ` (${filename} @ ${lineno}:${colno})`;
+  const dot = msg.endsWith('.') ? '' : '.';
+  const renderedType = type === 'unhandledrejection' ? 'promise rejection' : type;
+  showGlobalErrorMessage(`JavaScript ${renderedType}: ${msg}${dot} Open browser console to see more details.`);
+}
+
+function initGlobalErrorHandler() {
+  if (window._globalHandlerErrors?._inited) {
+    showGlobalErrorMessage(`The global error handler has been initialized, do not initialize it again`);
+    return;
+  }
+  if (!window.config) {
+    showGlobalErrorMessage(`Gitea JavaScript code couldn't run correctly, please check your custom templates`);
+  }
+  // we added an event handler for window error at the very beginning of <script> of page head the
+  // handler calls `_globalHandlerErrors.push` (array method) to record all errors occur before
+  // this init then in this init, we can collect all error events and show them.
+  for (const e of window._globalHandlerErrors || []) {
+    processWindowErrorEvent(e);
+  }
+  // then, change _globalHandlerErrors to an object with push method, to process further error
+  // events directly
+  window._globalHandlerErrors = {_inited: true, push: (e) => processWindowErrorEvent(e)};
+}
+
+initGlobalErrorHandler();
diff --git a/web_src/js/bootstrap.test.js b/web_src/js/bootstrap.test.js
new file mode 100644
index 00000000..a6b901b9
--- /dev/null
+++ b/web_src/js/bootstrap.test.js
@@ -0,0 +1,12 @@
+import {showGlobalErrorMessage} from './bootstrap.js';
+
+test('showGlobalErrorMessage', () => {
+  document.body.innerHTML = '<div class="page-content"></div>';
+  showGlobalErrorMessage('test msg 1');
+  showGlobalErrorMessage('test msg 2');
+  showGlobalErrorMessage('test msg 1'); // duplicated
+
+  expect(document.body.innerHTML).toContain('>test msg 1 (2)<');
+  expect(document.body.innerHTML).toContain('>test msg 2<');
+  expect(document.querySelectorAll('.js-global-error').length).toEqual(2);
+});
diff --git a/web_src/js/components/.eslintrc.yaml b/web_src/js/components/.eslintrc.yaml
new file mode 100644
index 00000000..0d233442
--- /dev/null
+++ b/web_src/js/components/.eslintrc.yaml
@@ -0,0 +1,21 @@
+plugins:
+  - eslint-plugin-vue
+  - eslint-plugin-vue-scoped-css
+
+extends:
+  - ../../../.eslintrc.yaml
+  - plugin:vue/vue3-recommended
+  - plugin:vue-scoped-css/vue3-recommended
+
+parserOptions:
+  sourceType: module
+  ecmaVersion: latest
+
+env:
+  browser: true
+
+rules:
+  vue/attributes-order: [0]
+  vue/html-closing-bracket-spacing: [2, {startTag: never, endTag: never, selfClosingTag: never}]
+  vue/max-attributes-per-line: [0]
+  vue-scoped-css/enforce-style-type: [0]
diff --git a/web_src/js/components/ActionRunStatus.vue b/web_src/js/components/ActionRunStatus.vue
new file mode 100644
index 00000000..7ada543f
--- /dev/null
+++ b/web_src/js/components/ActionRunStatus.vue
@@ -0,0 +1,39 @@
+<!-- This vue should be kept the same as templates/repo/actions/status.tmpl
+    Please also update the template file above if this vue is modified.
+    action status accepted: success, skipped, waiting, blocked, running, failure, cancelled, unknown
+-->
+<script>
+import {SvgIcon} from '../svg.js';
+
+export default {
+  components: {SvgIcon},
+  props: {
+    status: {
+      type: String,
+      required: true,
+    },
+    size: {
+      type: Number,
+      default: 16,
+    },
+    className: {
+      type: String,
+      default: '',
+    },
+    localeStatus: {
+      type: String,
+      default: '',
+    },
+  },
+};
+</script>
+<template>
+  <span class="tw-flex tw-items-center" :data-tooltip-content="localeStatus" v-if="status">
+    <SvgIcon name="octicon-check-circle-fill" class="text green" :size="size" :class-name="className" v-if="status === 'success'"/>
+    <SvgIcon name="octicon-skip" class="text grey" :size="size" :class-name="className" v-else-if="status === 'skipped'"/>
+    <SvgIcon name="octicon-clock" class="text yellow" :size="size" :class-name="className" v-else-if="status === 'waiting'"/>
+    <SvgIcon name="octicon-blocked" class="text yellow" :size="size" :class-name="className" v-else-if="status === 'blocked'"/>
+    <SvgIcon name="octicon-meter" class="text yellow" :size="size" :class-name="'job-status-rotate ' + className" v-else-if="status === 'running'"/>
+    <SvgIcon name="octicon-x-circle-fill" class="text red" :size="size" v-else-if="['failure', 'cancelled', 'unknown'].includes(status)"/>
+  </span>
+</template>
diff --git a/web_src/js/components/ActivityHeatmap.vue b/web_src/js/components/ActivityHeatmap.vue
new file mode 100644
index 00000000..be0841e8
--- /dev/null
+++ b/web_src/js/components/ActivityHeatmap.vue
@@ -0,0 +1,83 @@
+<script>
+import {CalendarHeatmap} from 'vue3-calendar-heatmap';
+
+export default {
+  components: {CalendarHeatmap},
+  props: {
+    values: {
+      type: Array,
+      default: () => [],
+    },
+    locale: {
+      type: Object,
+      default: () => {},
+    },
+  },
+  data: () => ({
+    colorRange: [
+      'var(--color-secondary-alpha-60)',
+      'var(--color-secondary-alpha-60)',
+      'var(--color-primary-light-4)',
+      'var(--color-primary-light-2)',
+      'var(--color-primary)',
+      'var(--color-primary-dark-2)',
+      'var(--color-primary-dark-4)',
+    ],
+    endDate: new Date(),
+  }),
+  mounted() {
+    // work around issue with first legend color being rendered twice and legend cut off
+    const legend = document.querySelector('.vch__external-legend-wrapper');
+    legend.setAttribute('viewBox', '12 0 80 10');
+    legend.style.marginRight = '-12px';
+  },
+  methods: {
+    handleDayClick(e) {
+      // Reset filter if same date is clicked
+      const params = new URLSearchParams(document.location.search);
+      const queryDate = params.get('date');
+      // Timezone has to be stripped because toISOString() converts to UTC
+      const clickedDate = new Date(e.date - (e.date.getTimezoneOffset() * 60000)).toISOString().substring(0, 10);
+
+      if (queryDate && queryDate === clickedDate) {
+        params.delete('date');
+      } else {
+        params.set('date', clickedDate);
+      }
+
+      params.delete('page');
+
+      const newSearch = params.toString();
+      window.location.search = newSearch.length ? `?${newSearch}` : '';
+    },
+  },
+};
+</script>
+<template>
+  <div class="total-contributions">
+    {{ locale.contributions_in_the_last_12_months }}
+  </div>
+  <calendar-heatmap
+    :locale="locale"
+    :no-data-text="locale.contributions_zero"
+    :tooltip-formatter="
+      (v) =>
+        locale.contributions_format
+          .replace(
+            '{contributions}',
+            `<b>${v.count} ${
+              v.count === 1
+                ? locale.contributions_one
+                : locale.contributions_few
+            }</b>`
+          )
+          .replace('{month}', locale.months[v.date.getMonth()])
+          .replace('{day}', v.date.getDate())
+          .replace('{year}', v.date.getFullYear())
+    "
+    :end-date="endDate"
+    :values="values"
+    :range-color="colorRange"
+    @day-click="handleDayClick($event)"
+  />
+</template>
diff --git a/web_src/js/components/ContextPopup.test.js b/web_src/js/components/ContextPopup.test.js
new file mode 100644
index 00000000..1db6c383
--- /dev/null
+++ b/web_src/js/components/ContextPopup.test.js
@@ -0,0 +1,39 @@
+import {mount, flushPromises} from '@vue/test-utils';
+import ContextPopup from './ContextPopup.vue';
+
+test('renders a issue info popup', async () => {
+  const owner = 'user2';
+  const repo = 'repo1';
+  const index = 1;
+  vi.spyOn(global, 'fetch').mockResolvedValue({
+    json: vi.fn().mockResolvedValue({
+      ok: true,
+      created_at: '2023-09-30T19:00:00Z',
+      repository: {full_name: owner},
+      pull_request: null,
+      state: 'open',
+      title: 'Normal issue',
+      body: 'Lorem ipsum...',
+      number: index,
+      labels: [{color: 'ee0701', name: "Bug :+1: <script class='evil'>alert('Oh no!');</script>"}],
+    }),
+    ok: true,
+  });
+
+  const wrapper = mount(ContextPopup);
+  wrapper.vm.$el.dispatchEvent(new CustomEvent('ce-load-context-popup', {detail: {owner, repo, index}}));
+  await flushPromises();
+
+  // Header
+  expect(wrapper.get('p:nth-of-type(1)').text()).toEqual('user2 on Sep 30, 2023');
+  // Title
+  expect(wrapper.get('p:nth-of-type(2)').text()).toEqual('Normal issue #1');
+  // Body
+  expect(wrapper.get('p:nth-of-type(3)').text()).toEqual('Lorem ipsum...');
+  // Check that the state is correct.
+  expect(wrapper.get('svg').classes()).toContain('octicon-issue-opened');
+  // Ensure that script is not an element.
+  expect(() => wrapper.get('.evil')).toThrowError();
+  // Check content of label
+  expect(wrapper.get('.ui.label').text()).toContain("Bug 👍 <script class='evil'>alert('Oh no!');</script>");
+});
diff --git a/web_src/js/components/ContextPopup.vue b/web_src/js/components/ContextPopup.vue
new file mode 100644
index 00000000..70b12dcb
--- /dev/null
+++ b/web_src/js/components/ContextPopup.vue
@@ -0,0 +1,119 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {contrastColor} from '../utils/color.js';
+import {GET} from '../modules/fetch.js';
+import {emojiHTML} from '../features/emoji.js';
+import {htmlEscape} from 'escape-goat';
+
+const {appSubUrl, i18n} = window.config;
+
+export default {
+  components: {SvgIcon},
+  data: () => ({
+    loading: false,
+    issue: null,
+    i18nErrorOccurred: i18n.error_occurred,
+    i18nErrorMessage: null,
+  }),
+  computed: {
+    createdAt() {
+      return new Date(this.issue.created_at).toLocaleDateString(undefined, {year: 'numeric', month: 'short', day: 'numeric'});
+    },
+
+    body() {
+      const body = this.issue.body.replace(/\n+/g, ' ');
+      if (body.length > 85) {
+        return `${body.substring(0, 85)}…`;
+      }
+      return body;
+    },
+
+    icon() {
+      if (this.issue.pull_request !== null) {
+        if (this.issue.state === 'open') {
+          if (this.issue.pull_request.draft === true) {
+            return 'octicon-git-pull-request-draft'; // WIP PR
+          }
+          return 'octicon-git-pull-request'; // Open PR
+        } else if (this.issue.pull_request.merged === true) {
+          return 'octicon-git-merge'; // Merged PR
+        }
+        return 'octicon-git-pull-request'; // Closed PR
+      } else if (this.issue.state === 'open') {
+        return 'octicon-issue-opened'; // Open Issue
+      }
+      return 'octicon-issue-closed'; // Closed Issue
+    },
+
+    color() {
+      if (this.issue.pull_request !== null) {
+        if (this.issue.pull_request.draft === true) {
+          return 'grey'; // WIP PR
+        } else if (this.issue.pull_request.merged === true) {
+          return 'purple'; // Merged PR
+        }
+      }
+      if (this.issue.state === 'open') {
+        return 'green'; // Open Issue
+      }
+      return 'red'; // Closed Issue
+    },
+
+    labels() {
+      return this.issue.labels.map((label) => ({
+        name: htmlEscape(label.name).replaceAll(/:[-+\w]+:/g, (emoji) => {
+          return emojiHTML(emoji.substring(1, emoji.length - 1));
+        }),
+        color: `#${label.color}`,
+        textColor: contrastColor(`#${label.color}`),
+      }));
+    },
+  },
+  mounted() {
+    this.$refs.root.addEventListener('ce-load-context-popup', (e) => {
+      const data = e.detail;
+      if (!this.loading && this.issue === null) {
+        this.load(data);
+      }
+    });
+  },
+  methods: {
+    async load(data) {
+      this.loading = true;
+      this.i18nErrorMessage = null;
+
+      try {
+        const response = await GET(`${appSubUrl}/${data.owner}/${data.repo}/issues/${data.index}/info`);
+        const respJson = await response.json();
+        if (!response.ok) {
+          this.i18nErrorMessage = respJson.message ?? i18n.network_error;
+          return;
+        }
+        this.issue = respJson;
+      } catch {
+        this.i18nErrorMessage = i18n.network_error;
+      } finally {
+        this.loading = false;
+      }
+    },
+  },
+};
+</script>
+<template>
+  <div ref="root">
+    <div v-if="loading" class="tw-h-12 tw-w-12 is-loading"/>
+    <div v-if="!loading && issue !== null" id="issue-info-popup">
+      <p><small>{{ issue.repository.full_name }} on {{ createdAt }}</small></p>
+      <p><svg-icon :name="icon" :class="['text', color]"/> <strong>{{ issue.title }}</strong> #{{ issue.number }}</p>
+      <p>{{ body }}</p>
+      <div class="labels-list">
+        <!-- eslint-disable-next-line vue/no-v-html -->
+        <div v-for="label in labels" :key="label.name" class="ui label" :style="{ color: label.textColor, backgroundColor: label.color }" v-html="label.name"/>
+      </div>
+    </div>
+    <div v-if="!loading && issue === null">
+      <p><small>{{ i18nErrorOccurred }}</small></p>
+      <p>{{ i18nErrorMessage }}</p>
+    </div>
+  </div>
+</template>
diff --git a/web_src/js/components/DashboardRepoList.vue b/web_src/js/components/DashboardRepoList.vue
new file mode 100644
index 00000000..d9c9e350
--- /dev/null
+++ b/web_src/js/components/DashboardRepoList.vue
@@ -0,0 +1,538 @@
+<script>
+import {createApp, nextTick} from 'vue';
+import $ from 'jquery';
+import {SvgIcon} from '../svg.js';
+import {GET} from '../modules/fetch.js';
+
+const {appSubUrl, assetUrlPrefix, pageData} = window.config;
+
+// make sure this matches templates/repo/commit_status.tmpl
+const commitStatus = {
+  pending: {name: 'octicon-dot-fill', color: 'yellow'},
+  success: {name: 'octicon-check', color: 'green'},
+  error: {name: 'gitea-exclamation', color: 'red'},
+  failure: {name: 'octicon-x', color: 'red'},
+  warning: {name: 'gitea-exclamation', color: 'yellow'},
+};
+
+const sfc = {
+  components: {SvgIcon},
+  data() {
+    const params = new URLSearchParams(window.location.search);
+    const tab = params.get('repo-search-tab') || 'repos';
+    const reposFilter = params.get('repo-search-filter') || 'all';
+    const privateFilter = params.get('repo-search-private') || 'both';
+    const archivedFilter = params.get('repo-search-archived') || 'unarchived';
+    const searchQuery = params.get('repo-search-query') || '';
+    const page = Number(params.get('repo-search-page')) || 1;
+
+    return {
+      tab,
+      repos: [],
+      reposTotalCount: 0,
+      reposFilter,
+      archivedFilter,
+      privateFilter,
+      page,
+      finalPage: 1,
+      searchQuery,
+      isLoading: false,
+      staticPrefix: assetUrlPrefix,
+      counts: {},
+      repoTypes: {
+        all: {
+          searchMode: '',
+        },
+        forks: {
+          searchMode: 'fork',
+        },
+        mirrors: {
+          searchMode: 'mirror',
+        },
+        sources: {
+          searchMode: 'source',
+        },
+        collaborative: {
+          searchMode: 'collaborative',
+        },
+      },
+      textArchivedFilterTitles: {},
+      textPrivateFilterTitles: {},
+
+      organizations: [],
+      isOrganization: true,
+      canCreateOrganization: false,
+      organizationsTotalCount: 0,
+      organizationId: 0,
+
+      subUrl: appSubUrl,
+      ...pageData.dashboardRepoList,
+      activeIndex: -1, // don't select anything at load, first cursor down will select
+    };
+  },
+
+  computed: {
+    showMoreReposLink() {
+      return this.repos.length > 0 && this.repos.length < this.counts[`${this.reposFilter}:${this.archivedFilter}:${this.privateFilter}`];
+    },
+    searchURL() {
+      return `${this.subUrl}/repo/search?sort=updated&order=desc&uid=${this.uid}&team_id=${this.teamId}&q=${this.searchQuery
+      }&page=${this.page}&limit=${this.searchLimit}&mode=${this.repoTypes[this.reposFilter].searchMode
+      }${this.reposFilter !== 'all' ? '&exclusive=1' : ''
+      }${this.archivedFilter === 'archived' ? '&archived=true' : ''}${this.archivedFilter === 'unarchived' ? '&archived=false' : ''
+      }${this.privateFilter === 'private' ? '&is_private=true' : ''}${this.privateFilter === 'public' ? '&is_private=false' : ''
+      }`;
+    },
+    repoTypeCount() {
+      return this.counts[`${this.reposFilter}:${this.archivedFilter}:${this.privateFilter}`];
+    },
+    checkboxArchivedFilterTitle() {
+      return this.textArchivedFilterTitles[this.archivedFilter];
+    },
+    checkboxArchivedFilterProps() {
+      return {checked: this.archivedFilter === 'archived', indeterminate: this.archivedFilter === 'both'};
+    },
+    checkboxPrivateFilterTitle() {
+      return this.textPrivateFilterTitles[this.privateFilter];
+    },
+    checkboxPrivateFilterProps() {
+      return {checked: this.privateFilter === 'private', indeterminate: this.privateFilter === 'both'};
+    },
+  },
+
+  mounted() {
+    const el = document.getElementById('dashboard-repo-list');
+    this.changeReposFilter(this.reposFilter);
+    $(el).find('.dropdown').dropdown();
+    nextTick(() => {
+      this.$refs.search.focus();
+    });
+
+    this.textArchivedFilterTitles = {
+      'archived': this.textShowOnlyArchived,
+      'unarchived': this.textShowOnlyUnarchived,
+      'both': this.textShowBothArchivedUnarchived,
+    };
+
+    this.textPrivateFilterTitles = {
+      'private': this.textShowOnlyPrivate,
+      'public': this.textShowOnlyPublic,
+      'both': this.textShowBothPrivatePublic,
+    };
+  },
+
+  methods: {
+    changeTab(t) {
+      this.tab = t;
+      this.updateHistory();
+    },
+
+    changeReposFilter(filter) {
+      this.reposFilter = filter;
+      this.repos = [];
+      this.page = 1;
+      this.counts[`${filter}:${this.archivedFilter}:${this.privateFilter}`] = 0;
+      this.searchRepos();
+    },
+
+    updateHistory() {
+      const params = new URLSearchParams(window.location.search);
+
+      if (this.tab === 'repos') {
+        params.delete('repo-search-tab');
+      } else {
+        params.set('repo-search-tab', this.tab);
+      }
+
+      if (this.reposFilter === 'all') {
+        params.delete('repo-search-filter');
+      } else {
+        params.set('repo-search-filter', this.reposFilter);
+      }
+
+      if (this.privateFilter === 'both') {
+        params.delete('repo-search-private');
+      } else {
+        params.set('repo-search-private', this.privateFilter);
+      }
+
+      if (this.archivedFilter === 'unarchived') {
+        params.delete('repo-search-archived');
+      } else {
+        params.set('repo-search-archived', this.archivedFilter);
+      }
+
+      if (this.searchQuery === '') {
+        params.delete('repo-search-query');
+      } else {
+        params.set('repo-search-query', this.searchQuery);
+      }
+
+      if (this.page === 1) {
+        params.delete('repo-search-page');
+      } else {
+        params.set('repo-search-page', `${this.page}`);
+      }
+
+      const queryString = params.toString();
+      if (queryString) {
+        window.history.replaceState({}, '', `?${queryString}`);
+      } else {
+        window.history.replaceState({}, '', window.location.pathname);
+      }
+    },
+
+    toggleArchivedFilter() {
+      if (this.archivedFilter === 'unarchived') {
+        this.archivedFilter = 'archived';
+      } else if (this.archivedFilter === 'archived') {
+        this.archivedFilter = 'both';
+      } else { // including both
+        this.archivedFilter = 'unarchived';
+      }
+      this.page = 1;
+      this.repos = [];
+      this.counts[`${this.reposFilter}:${this.archivedFilter}:${this.privateFilter}`] = 0;
+      this.searchRepos();
+    },
+
+    togglePrivateFilter() {
+      if (this.privateFilter === 'both') {
+        this.privateFilter = 'public';
+      } else if (this.privateFilter === 'public') {
+        this.privateFilter = 'private';
+      } else { // including private
+        this.privateFilter = 'both';
+      }
+      this.page = 1;
+      this.repos = [];
+      this.counts[`${this.reposFilter}:${this.archivedFilter}:${this.privateFilter}`] = 0;
+      this.searchRepos();
+    },
+
+    changePage(page) {
+      this.page = page;
+      if (this.page > this.finalPage) {
+        this.page = this.finalPage;
+      }
+      if (this.page < 1) {
+        this.page = 1;
+      }
+      this.repos = [];
+      this.counts[`${this.reposFilter}:${this.archivedFilter}:${this.privateFilter}`] = 0;
+      this.searchRepos();
+    },
+
+    async searchRepos() {
+      this.isLoading = true;
+
+      const searchedMode = this.repoTypes[this.reposFilter].searchMode;
+      const searchedURL = this.searchURL;
+      const searchedQuery = this.searchQuery;
+
+      let response, json;
+      try {
+        if (!this.reposTotalCount) {
+          const totalCountSearchURL = `${this.subUrl}/repo/search?count_only=1&uid=${this.uid}&team_id=${this.teamId}&q=&page=1&mode=`;
+          response = await GET(totalCountSearchURL);
+          this.reposTotalCount = response.headers.get('X-Total-Count') ?? '?';
+        }
+
+        response = await GET(searchedURL);
+        json = await response.json();
+      } catch {
+        if (searchedURL === this.searchURL) {
+          this.isLoading = false;
+        }
+        return;
+      }
+
+      if (searchedURL === this.searchURL) {
+        this.repos = json.data.map((webSearchRepo) => {
+          return {
+            ...webSearchRepo.repository,
+            latest_commit_status: webSearchRepo.latest_commit_status,
+            locale_latest_commit_status: webSearchRepo.locale_latest_commit_status,
+          };
+        });
+        const count = response.headers.get('X-Total-Count');
+        if (searchedQuery === '' && searchedMode === '' && this.archivedFilter === 'both') {
+          this.reposTotalCount = count;
+        }
+        this.counts[`${this.reposFilter}:${this.archivedFilter}:${this.privateFilter}`] = count;
+        this.finalPage = Math.ceil(count / this.searchLimit);
+        this.updateHistory();
+        this.isLoading = false;
+      }
+    },
+
+    repoIcon(repo) {
+      if (repo.fork) {
+        return 'octicon-repo-forked';
+      } else if (repo.mirror) {
+        return 'octicon-mirror';
+      } else if (repo.template) {
+        return `octicon-repo-template`;
+      } else if (repo.private) {
+        return 'octicon-lock';
+      } else if (repo.internal) {
+        return 'octicon-repo';
+      }
+      return 'octicon-repo';
+    },
+
+    statusIcon(status) {
+      return commitStatus[status].name;
+    },
+
+    statusColor(status) {
+      return commitStatus[status].color;
+    },
+
+    reposFilterKeyControl(e) {
+      switch (e.key) {
+        case 'Enter':
+          document.querySelector('.repo-owner-name-list li.active a')?.click();
+          break;
+        case 'ArrowUp':
+          if (this.activeIndex > 0) {
+            this.activeIndex--;
+          } else if (this.page > 1) {
+            this.changePage(this.page - 1);
+            this.activeIndex = this.searchLimit - 1;
+          }
+          break;
+        case 'ArrowDown':
+          if (this.activeIndex < this.repos.length - 1) {
+            this.activeIndex++;
+          } else if (this.page < this.finalPage) {
+            this.activeIndex = 0;
+            this.changePage(this.page + 1);
+          }
+          break;
+        case 'ArrowRight':
+          if (this.page < this.finalPage) {
+            this.changePage(this.page + 1);
+          }
+          break;
+        case 'ArrowLeft':
+          if (this.page > 1) {
+            this.changePage(this.page - 1);
+          }
+          break;
+      }
+      if (this.activeIndex === -1 || this.activeIndex > this.repos.length - 1) {
+        this.activeIndex = 0;
+      }
+    },
+  },
+};
+
+export function initDashboardRepoList() {
+  const el = document.getElementById('dashboard-repo-list');
+  if (el) {
+    createApp(sfc).mount(el);
+  }
+}
+
+export default sfc; // activate the IDE's Vue plugin
+</script>
+<template>
+  <div>
+    <div v-if="!isOrganization" class="ui secondary stackable menu">
+      <a :class="{item: true, active: tab === 'repos'}" @click="changeTab('repos')">{{ textMyRepos }} <span class="ui grey label tw-ml-2">{{ reposTotalCount }}</span></a>
+      <a :class="{item: true, active: tab === 'organizations'}" @click="changeTab('organizations')">{{ textMyOrgs }} <span class="ui grey label tw-ml-2">{{ organizationsTotalCount }}</span></a>
+    </div>
+    <div v-show="tab === 'repos'" class="ui tab active list dashboard-repos">
+      <h4 v-if="isOrganization" class="ui top attached tw-mt-4 tw-flex tw-items-center">
+        <div class="tw-flex-1 tw-flex tw-items-center">
+          {{ textMyRepos }}
+          <span class="ui grey label tw-ml-2">{{ reposTotalCount }}</span>
+        </div>
+      </h4>
+      <div class="ui top attached segment repos-search">
+        <div class="ui small fluid action left icon input">
+          <input type="search" spellcheck="false" maxlength="255" @input="changeReposFilter(reposFilter)" v-model="searchQuery" ref="search" @keydown="reposFilterKeyControl" :placeholder="textSearchRepos">
+          <i class="icon loading-icon-3px" :class="{'is-loading': isLoading}"><svg-icon name="octicon-search" :size="16"/></i>
+          <div class="ui dropdown icon button" :title="textFilter">
+            <svg-icon name="octicon-filter" :size="16"/>
+            <div class="menu">
+              <a class="item" @click="toggleArchivedFilter()">
+                <div class="ui checkbox" ref="checkboxArchivedFilter" :title="checkboxArchivedFilterTitle">
+                  <!--the "hidden" is necessary to make the checkbox work without Fomantic UI js,
+                      otherwise if the "input" handles click event for intermediate status, it breaks the internal state-->
+                  <input type="checkbox" class="hidden" v-bind.prop="checkboxArchivedFilterProps">
+                  <label>
+                    <svg-icon name="octicon-archive" :size="16" class-name="tw-mr-1"/>
+                    {{ textShowArchived }}
+                  </label>
+                </div>
+              </a>
+              <a class="item" @click="togglePrivateFilter()">
+                <div class="ui checkbox" ref="checkboxPrivateFilter" :title="checkboxPrivateFilterTitle">
+                  <input type="checkbox" class="hidden" v-bind.prop="checkboxPrivateFilterProps">
+                  <label>
+                    <svg-icon name="octicon-lock" :size="16" class-name="tw-mr-1"/>
+                    {{ textShowPrivate }}
+                  </label>
+                </div>
+              </a>
+            </div>
+          </div>
+        </div>
+        <overflow-menu class="ui secondary pointing tabular borderless menu repos-filter">
+          <div class="overflow-menu-items tw-justify-center">
+            <a class="item" tabindex="0" :class="{active: reposFilter === 'all'}" @click="changeReposFilter('all')">
+              {{ textAll }}
+              <div v-show="reposFilter === 'all'" class="ui circular mini grey label">{{ repoTypeCount }}</div>
+            </a>
+            <a class="item" tabindex="0" :class="{active: reposFilter === 'sources'}" @click="changeReposFilter('sources')">
+              {{ textSources }}
+              <div v-show="reposFilter === 'sources'" class="ui circular mini grey label">{{ repoTypeCount }}</div>
+            </a>
+            <a class="item" tabindex="0" :class="{active: reposFilter === 'forks'}" @click="changeReposFilter('forks')">
+              {{ textForks }}
+              <div v-show="reposFilter === 'forks'" class="ui circular mini grey label">{{ repoTypeCount }}</div>
+            </a>
+            <a class="item" tabindex="0" :class="{active: reposFilter === 'mirrors'}" @click="changeReposFilter('mirrors')" v-if="isMirrorsEnabled">
+              {{ textMirrors }}
+              <div v-show="reposFilter === 'mirrors'" class="ui circular mini grey label">{{ repoTypeCount }}</div>
+            </a>
+            <a class="item" tabindex="0" :class="{active: reposFilter === 'collaborative'}" @click="changeReposFilter('collaborative')">
+              {{ textCollaborative }}
+              <div v-show="reposFilter === 'collaborative'" class="ui circular mini grey label">{{ repoTypeCount }}</div>
+            </a>
+          </div>
+        </overflow-menu>
+      </div>
+      <div v-if="repos.length" class="ui attached table segment tw-rounded-b">
+        <ul class="repo-owner-name-list">
+          <li class="tw-flex tw-items-center tw-py-2" v-for="repo, index in repos" :class="{'active': index === activeIndex}" :key="repo.id">
+            <a class="repo-list-link muted" :href="repo.link">
+              <svg-icon :name="repoIcon(repo)" :size="16" class-name="repo-list-icon"/>
+              <div class="text truncate">{{ repo.full_name }}</div>
+              <div v-if="repo.archived">
+                <svg-icon name="octicon-archive" :size="16"/>
+              </div>
+            </a>
+            <a class="tw-flex tw-items-center" v-if="repo.latest_commit_status" :href="repo.latest_commit_status.TargetURL" :data-tooltip-content="repo.locale_latest_commit_status">
+              <!-- the commit status icon logic is taken from templates/repo/commit_status.tmpl -->
+              <svg-icon :name="statusIcon(repo.latest_commit_status.State)" :class-name="'tw-ml-2 commit-status icon text ' + statusColor(repo.latest_commit_status.State)" :size="16"/>
+            </a>
+          </li>
+        </ul>
+        <div v-if="showMoreReposLink" class="tw-text-center">
+          <div class="divider tw-my-0"/>
+          <div class="ui borderless pagination menu narrow tw-my-2">
+            <a
+              class="item navigation tw-py-1" :class="{'disabled': page === 1}"
+              @click="changePage(1)" :title="textFirstPage"
+            >
+              <svg-icon name="gitea-double-chevron-left" :size="16" class-name="tw-mr-1"/>
+            </a>
+            <a
+              class="item navigation tw-py-1" :class="{'disabled': page === 1}"
+              @click="changePage(page - 1)" :title="textPreviousPage"
+            >
+              <svg-icon name="octicon-chevron-left" :size="16" clsas-name="tw-mr-1"/>
+            </a>
+            <a class="active item tw-py-1">{{ page }}</a>
+            <a
+              class="item navigation" :class="{'disabled': page === finalPage}"
+              @click="changePage(page + 1)" :title="textNextPage"
+            >
+              <svg-icon name="octicon-chevron-right" :size="16" class-name="tw-ml-1"/>
+            </a>
+            <a
+              class="item navigation tw-py-1" :class="{'disabled': page === finalPage}"
+              @click="changePage(finalPage)" :title="textLastPage"
+            >
+              <svg-icon name="gitea-double-chevron-right" :size="16" class-name="tw-ml-1"/>
+            </a>
+          </div>
+        </div>
+      </div>
+    </div>
+    <div v-if="!isOrganization" v-show="tab === 'organizations'" class="ui tab active list dashboard-orgs">
+      <div v-if="organizations.length" class="ui attached table segment tw-rounded">
+        <ul class="repo-owner-name-list">
+          <li class="tw-flex tw-items-center tw-py-2" v-for="org in organizations" :key="org.name">
+            <a class="repo-list-link muted" :href="subUrl + '/' + encodeURIComponent(org.name)">
+              <svg-icon name="octicon-organization" :size="16" class-name="repo-list-icon"/>
+              <div class="text truncate">{{ org.name }}</div>
+              <div><!-- div to prevent underline of label on hover -->
+                <span class="ui tiny basic label" v-if="org.org_visibility !== 'public'">
+                  {{ org.org_visibility === 'limited' ? textOrgVisibilityLimited: textOrgVisibilityPrivate }}
+                </span>
+              </div>
+            </a>
+            <div class="text light grey tw-flex tw-items-center tw-ml-2">
+              {{ org.num_repos }}
+              <svg-icon name="octicon-repo" :size="16" class-name="tw-ml-1 tw-mt-0.5"/>
+            </div>
+          </li>
+        </ul>
+      </div>
+    </div>
+  </div>
+</template>
+<style scoped>
+ul {
+  list-style: none;
+  margin: 0;
+  padding-left: 0;
+}
+
+ul li {
+  padding: 0 10px;
+}
+
+ul li:not(:last-child) {
+  border-bottom: 1px solid var(--color-secondary);
+}
+
+.repos-search {
+  padding-bottom: 0 !important;
+}
+
+.repos-filter {
+  padding-top: 0 !important;
+  margin-top: 0 !important;
+  border-bottom-width: 0 !important;
+  margin-bottom: 2px !important;
+}
+
+.repos-filter .item {
+  padding-left: 6px !important;
+  padding-right: 6px !important;
+}
+
+.repo-list-link {
+  min-width: 0; /* for text truncation */
+  display: flex;
+  align-items: center;
+  flex: 1;
+  gap: 0.5rem;
+}
+
+.repo-list-link .svg {
+  color: var(--color-text-light-2);
+}
+
+.repo-list-icon {
+  min-width: 16px;
+  margin-right: 2px;
+}
+
+/* octicon-mirror has no padding inside the SVG */
+.repo-list-icon.octicon-mirror {
+  width: 14px;
+  min-width: 14px;
+  margin-left: 1px;
+  margin-right: 3px;
+}
+
+.repo-owner-name-list li.active {
+  background: var(--color-hover);
+}
+</style>
diff --git a/web_src/js/components/DiffCommitSelector.vue b/web_src/js/components/DiffCommitSelector.vue
new file mode 100644
index 00000000..352d0857
--- /dev/null
+++ b/web_src/js/components/DiffCommitSelector.vue
@@ -0,0 +1,306 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {GET} from '../modules/fetch.js';
+
+export default {
+  components: {SvgIcon},
+  data: () => {
+    const el = document.getElementById('diff-commit-select');
+    return {
+      menuVisible: false,
+      isLoading: false,
+      locale: {
+        filter_changes_by_commit: el.getAttribute('data-filter_changes_by_commit'),
+      },
+      commits: [],
+      hoverActivated: false,
+      lastReviewCommitSha: null,
+    };
+  },
+  computed: {
+    commitsSinceLastReview() {
+      if (this.lastReviewCommitSha) {
+        return this.commits.length - this.commits.findIndex((x) => x.id === this.lastReviewCommitSha) - 1;
+      }
+      return 0;
+    },
+    queryParams() {
+      return this.$el.parentNode.getAttribute('data-queryparams');
+    },
+    issueLink() {
+      return this.$el.parentNode.getAttribute('data-issuelink');
+    },
+  },
+  mounted() {
+    document.body.addEventListener('click', this.onBodyClick);
+    this.$el.addEventListener('keydown', this.onKeyDown);
+    this.$el.addEventListener('keyup', this.onKeyUp);
+  },
+  unmounted() {
+    document.body.removeEventListener('click', this.onBodyClick);
+    this.$el.removeEventListener('keydown', this.onKeyDown);
+    this.$el.removeEventListener('keyup', this.onKeyUp);
+  },
+  methods: {
+    onBodyClick(event) {
+      // close this menu on click outside of this element when the dropdown is currently visible opened
+      if (this.$el.contains(event.target)) return;
+      if (this.menuVisible) {
+        this.toggleMenu();
+      }
+    },
+    onKeyDown(event) {
+      if (!this.menuVisible) return;
+      const item = document.activeElement;
+      if (!this.$el.contains(item)) return;
+      switch (event.key) {
+        case 'ArrowDown': // select next element
+          event.preventDefault();
+          this.focusElem(item.nextElementSibling, item);
+          break;
+        case 'ArrowUp': // select previous element
+          event.preventDefault();
+          this.focusElem(item.previousElementSibling, item);
+          break;
+        case 'Escape': // close menu
+          event.preventDefault();
+          item.tabIndex = -1;
+          this.toggleMenu();
+          break;
+      }
+    },
+    onKeyUp(event) {
+      if (!this.menuVisible) return;
+      const item = document.activeElement;
+      if (!this.$el.contains(item)) return;
+      if (event.key === 'Shift' && this.hoverActivated) {
+        // shift is not pressed anymore -> deactivate hovering and reset hovered and selected
+        this.hoverActivated = false;
+        for (const commit of this.commits) {
+          commit.hovered = false;
+          commit.selected = false;
+        }
+      }
+    },
+    highlight(commit) {
+      if (!this.hoverActivated) return;
+      const indexSelected = this.commits.findIndex((x) => x.selected);
+      const indexCurrentElem = this.commits.findIndex((x) => x.id === commit.id);
+      for (const [idx, commit] of this.commits.entries()) {
+        commit.hovered = Math.min(indexSelected, indexCurrentElem) <= idx && idx <= Math.max(indexSelected, indexCurrentElem);
+      }
+    },
+    /** Focus given element */
+    focusElem(elem, prevElem) {
+      if (elem) {
+        elem.tabIndex = 0;
+        if (prevElem) prevElem.tabIndex = -1;
+        elem.focus();
+      }
+    },
+    /** Opens our menu, loads commits before opening */
+    async toggleMenu() {
+      this.menuVisible = !this.menuVisible;
+      // load our commits when the menu is not yet visible (it'll be toggled after loading)
+      // and we got no commits
+      if (!this.commits.length && this.menuVisible && !this.isLoading) {
+        this.isLoading = true;
+        try {
+          await this.fetchCommits();
+        } finally {
+          this.isLoading = false;
+        }
+      }
+      // set correct tabindex to allow easier navigation
+      this.$nextTick(() => {
+        const expandBtn = this.$el.querySelector('#diff-commit-list-expand');
+        const showAllChanges = this.$el.querySelector('#diff-commit-list-show-all');
+        if (this.menuVisible) {
+          this.focusElem(showAllChanges, expandBtn);
+        } else {
+          this.focusElem(expandBtn, showAllChanges);
+        }
+      });
+    },
+    /** Load the commits to show in this dropdown */
+    async fetchCommits() {
+      const resp = await GET(`${this.issueLink}/commits/list`);
+      const results = await resp.json();
+      this.commits.push(...results.commits.map((x) => {
+        x.hovered = false;
+        return x;
+      }));
+      this.commits.reverse();
+      this.lastReviewCommitSha = results.last_review_commit_sha || null;
+      if (this.lastReviewCommitSha && this.commits.findIndex((x) => x.id === this.lastReviewCommitSha) === -1) {
+        // the lastReviewCommit is not available (probably due to a force push)
+        // reset the last review commit sha
+        this.lastReviewCommitSha = null;
+      }
+      Object.assign(this.locale, results.locale);
+    },
+    showAllChanges() {
+      window.location = `${this.issueLink}/files${this.queryParams}`;
+    },
+    /** Called when user clicks on since last review */
+    changesSinceLastReviewClick() {
+      window.location = `${this.issueLink}/files/${this.lastReviewCommitSha}..${this.commits.at(-1).id}${this.queryParams}`;
+    },
+    /** Clicking on a single commit opens this specific commit */
+    commitClicked(commitId, newWindow = false) {
+      const url = `${this.issueLink}/commits/${commitId}${this.queryParams}`;
+      if (newWindow) {
+        window.open(url);
+      } else {
+        window.location = url;
+      }
+    },
+    /**
+     * When a commit is clicked with shift this enables the range
+     * selection. Second click (with shift) defines the end of the
+     * range. This opens the diff of this range
+     * Exception: first commit is the first commit of this PR. Then
+     * the diff from beginning of PR up to the second clicked commit is
+     * opened
+     */
+    commitClickedShift(commit) {
+      this.hoverActivated = !this.hoverActivated;
+      commit.selected = true;
+      // Second click -> determine our range and open links accordingly
+      if (!this.hoverActivated) {
+        // find all selected commits and generate a link
+        if (this.commits[0].selected) {
+          // first commit is selected - generate a short url with only target sha
+          const lastCommitIdx = this.commits.findLastIndex((x) => x.selected);
+          if (lastCommitIdx === this.commits.length - 1) {
+            // user selected all commits - just show the normal diff page
+            window.location = `${this.issueLink}/files${this.queryParams}`;
+          } else {
+            window.location = `${this.issueLink}/files/${this.commits[lastCommitIdx].id}${this.queryParams}`;
+          }
+        } else {
+          const start = this.commits[this.commits.findIndex((x) => x.selected) - 1].id;
+          const end = this.commits.findLast((x) => x.selected).id;
+          window.location = `${this.issueLink}/files/${start}..${end}${this.queryParams}`;
+        }
+      }
+    },
+  },
+};
+</script>
+<template>
+  <div class="ui scrolling dropdown custom">
+    <button
+      class="ui basic button"
+      id="diff-commit-list-expand"
+      @click.stop="toggleMenu()"
+      :data-tooltip-content="locale.filter_changes_by_commit"
+      aria-haspopup="true"
+      aria-controls="diff-commit-selector-menu"
+      :aria-label="locale.filter_changes_by_commit"
+      aria-activedescendant="diff-commit-list-show-all"
+    >
+      <svg-icon name="octicon-git-commit"/>
+    </button>
+    <div class="menu left transition" id="diff-commit-selector-menu" :class="{visible: menuVisible}" v-show="menuVisible" v-cloak :aria-expanded="menuVisible ? 'true': 'false'">
+      <div class="loading-indicator is-loading" v-if="isLoading"/>
+      <div v-if="!isLoading" class="vertical item" id="diff-commit-list-show-all" role="menuitem" @keydown.enter="showAllChanges()" @click="showAllChanges()">
+        <div class="gt-ellipsis">
+          {{ locale.show_all_commits }}
+        </div>
+        <div class="gt-ellipsis text light-2 tw-mb-0">
+          {{ locale.stats_num_commits }}
+        </div>
+      </div>
+      <!-- only show the show changes since last review if there is a review AND we are commits ahead of the last review -->
+      <div
+        v-if="lastReviewCommitSha != null" role="menuitem"
+        class="vertical item"
+        :class="{disabled: !commitsSinceLastReview}"
+        @keydown.enter="changesSinceLastReviewClick()"
+        @click="changesSinceLastReviewClick()"
+      >
+        <div class="gt-ellipsis">
+          {{ locale.show_changes_since_your_last_review }}
+        </div>
+        <div class="gt-ellipsis text light-2">
+          {{ commitsSinceLastReview }} commits
+        </div>
+      </div>
+      <span v-if="!isLoading" class="info text light-2">{{ locale.select_commit_hold_shift_for_range }}</span>
+      <template v-for="commit in commits" :key="commit.id">
+        <div
+          class="vertical item" role="menuitem"
+          :class="{selection: commit.selected, hovered: commit.hovered}"
+          @keydown.enter.exact="commitClicked(commit.id)"
+          @keydown.enter.shift.exact="commitClickedShift(commit)"
+          @mouseover.shift="highlight(commit)"
+          @click.exact="commitClicked(commit.id)"
+          @click.ctrl.exact="commitClicked(commit.id, true)"
+          @click.meta.exact="commitClicked(commit.id, true)"
+          @click.shift.exact.stop.prevent="commitClickedShift(commit)"
+        >
+          <div class="tw-flex-1 tw-flex tw-flex-col tw-gap-1">
+            <div class="gt-ellipsis commit-list-summary">
+              {{ commit.summary }}
+            </div>
+            <div class="gt-ellipsis text light-2">
+              {{ commit.committer_or_author_name }}
+              <span class="text right">
+                <!-- TODO: make this respect the PreferredTimestampTense setting -->
+                <relative-time prefix="" :datetime="commit.time" data-tooltip-content data-tooltip-interactive="true">{{ commit.time }}</relative-time>
+              </span>
+            </div>
+          </div>
+          <div class="tw-font-mono">
+            {{ commit.short_sha }}
+          </div>
+        </div>
+      </template>
+    </div>
+  </div>
+</template>
+<style scoped>
+  .hovered:not(.selection) {
+    background-color: var(--color-small-accent) !important;
+  }
+  .selection {
+    background-color: var(--color-accent) !important;
+  }
+
+  .info {
+    display: inline-block;
+    padding: 7px 14px !important;
+    line-height: 1.4;
+    width: 100%;
+  }
+
+  #diff-commit-selector-menu {
+    overflow-x: hidden;
+    max-height: 450px;
+  }
+
+  #diff-commit-selector-menu .loading-indicator {
+    height: 200px;
+    width: 350px;
+  }
+
+  #diff-commit-selector-menu .item,
+  #diff-commit-selector-menu .info {
+    display: flex !important;
+    flex-direction: row;
+    line-height: 1.4;
+    padding: 7px 14px !important;
+    border-top: 1px solid var(--color-secondary) !important;
+    gap: 0.25em;
+  }
+
+  #diff-commit-selector-menu .item:focus {
+    color: var(--color-text);
+    background: var(--color-hover);
+  }
+
+  #diff-commit-selector-menu .commit-list-summary {
+    max-width: min(380px, 96vw);
+  }
+</style>
diff --git a/web_src/js/components/DiffFileList.vue b/web_src/js/components/DiffFileList.vue
new file mode 100644
index 00000000..916780d9
--- /dev/null
+++ b/web_src/js/components/DiffFileList.vue
@@ -0,0 +1,58 @@
+<script>
+import {loadMoreFiles} from '../features/repo-diff.js';
+import {diffTreeStore} from '../modules/stores.js';
+
+export default {
+  data: () => {
+    return {store: diffTreeStore()};
+  },
+  mounted() {
+    document.getElementById('show-file-list-btn').addEventListener('click', this.toggleFileList);
+  },
+  unmounted() {
+    document.getElementById('show-file-list-btn').removeEventListener('click', this.toggleFileList);
+  },
+  methods: {
+    toggleFileList() {
+      this.store.fileListIsVisible = !this.store.fileListIsVisible;
+    },
+    diffTypeToString(pType) {
+      const diffTypes = {
+        1: 'add',
+        2: 'modify',
+        3: 'del',
+        4: 'rename',
+        5: 'copy',
+      };
+      return diffTypes[pType];
+    },
+    diffStatsWidth(adds, dels) {
+      return `${adds / (adds + dels) * 100}%`;
+    },
+    loadMoreData() {
+      loadMoreFiles(this.store.linkLoadMore);
+    },
+  },
+};
+</script>
+<template>
+  <ol class="diff-stats tw-m-0" ref="root" v-if="store.fileListIsVisible">
+    <li v-for="file in store.files" :key="file.NameHash">
+      <div class="tw-font-semibold tw-flex tw-items-center pull-right">
+        <span v-if="file.IsBin" class="tw-ml-0.5 tw-mr-2">{{ store.binaryFileMessage }}</span>
+        {{ file.IsBin ? '' : file.Addition + file.Deletion }}
+        <span v-if="!file.IsBin" class="diff-stats-bar tw-mx-2" :data-tooltip-content="store.statisticsMessage.replace('%d', (file.Addition + file.Deletion)).replace('%d', file.Addition).replace('%d', file.Deletion)">
+          <div class="diff-stats-add-bar" :style="{ 'width': diffStatsWidth(file.Addition, file.Deletion) }"/>
+        </span>
+      </div>
+      <!-- todo finish all file status, now modify, add, delete and rename -->
+      <span :class="['status', diffTypeToString(file.Type)]" :data-tooltip-content="diffTypeToString(file.Type)">&nbsp;</span>
+      <a class="file tw-font-mono" :href="'#diff-' + file.NameHash">{{ file.Name }}</a>
+    </li>
+    <li v-if="store.isIncomplete" class="tw-pt-1">
+      <span class="file tw-flex tw-items-center tw-justify-between">{{ store.tooManyFilesMessage }}
+        <a :class="['ui', 'basic', 'tiny', 'button', store.isLoadingNewData ? 'disabled' : '']" @click.stop="loadMoreData">{{ store.showMoreMessage }}</a>
+      </span>
+    </li>
+  </ol>
+</template>
diff --git a/web_src/js/components/DiffFileTree.vue b/web_src/js/components/DiffFileTree.vue
new file mode 100644
index 00000000..cddfee1e
--- /dev/null
+++ b/web_src/js/components/DiffFileTree.vue
@@ -0,0 +1,144 @@
+<script>
+import DiffFileTreeItem from './DiffFileTreeItem.vue';
+import {loadMoreFiles} from '../features/repo-diff.js';
+import {toggleElem} from '../utils/dom.js';
+import {diffTreeStore} from '../modules/stores.js';
+import {setFileFolding} from '../features/file-fold.js';
+
+const LOCAL_STORAGE_KEY = 'diff_file_tree_visible';
+
+export default {
+  components: {DiffFileTreeItem},
+  data: () => {
+    return {store: diffTreeStore()};
+  },
+  computed: {
+    fileTree() {
+      const result = [];
+      for (const file of this.store.files) {
+        // Split file into directories
+        const splits = file.Name.split('/');
+        let index = 0;
+        let parent = null;
+        let isFile = false;
+        for (const split of splits) {
+          index += 1;
+          // reached the end
+          if (index === splits.length) {
+            isFile = true;
+          }
+          let newParent = {
+            name: split,
+            children: [],
+            isFile,
+          };
+
+          if (isFile === true) {
+            newParent.file = file;
+          }
+
+          if (parent) {
+            // check if the folder already exists
+            const existingFolder = parent.children.find(
+              (x) => x.name === split,
+            );
+            if (existingFolder) {
+              newParent = existingFolder;
+            } else {
+              parent.children.push(newParent);
+            }
+          } else {
+            const existingFolder = result.find((x) => x.name === split);
+            if (existingFolder) {
+              newParent = existingFolder;
+            } else {
+              result.push(newParent);
+            }
+          }
+          parent = newParent;
+        }
+      }
+      const mergeChildIfOnlyOneDir = (entries) => {
+        for (const entry of entries) {
+          if (entry.children) {
+            mergeChildIfOnlyOneDir(entry.children);
+          }
+          if (entry.children.length === 1 && entry.children[0].isFile === false) {
+            // Merge it to the parent
+            entry.name = `${entry.name}/${entry.children[0].name}`;
+            entry.children = entry.children[0].children;
+          }
+        }
+      };
+      // Merge folders with just a folder as children in order to
+      // reduce the depth of our tree.
+      mergeChildIfOnlyOneDir(result);
+      return result;
+    },
+  },
+  mounted() {
+    // Default to true if unset
+    this.store.fileTreeIsVisible = localStorage.getItem(LOCAL_STORAGE_KEY) !== 'false';
+    document.querySelector('.diff-toggle-file-tree-button').addEventListener('click', this.toggleVisibility);
+
+    this.hashChangeListener = () => {
+      this.store.selectedItem = window.location.hash;
+      this.expandSelectedFile();
+    };
+    this.hashChangeListener();
+    window.addEventListener('hashchange', this.hashChangeListener);
+  },
+  unmounted() {
+    document.querySelector('.diff-toggle-file-tree-button').removeEventListener('click', this.toggleVisibility);
+    window.removeEventListener('hashchange', this.hashChangeListener);
+  },
+  methods: {
+    expandSelectedFile() {
+      // expand file if the selected file is folded
+      if (this.store.selectedItem) {
+        const box = document.querySelector(this.store.selectedItem);
+        const folded = box?.getAttribute('data-folded') === 'true';
+        if (folded) setFileFolding(box, box.querySelector('.fold-file'), false);
+      }
+    },
+    toggleVisibility() {
+      this.updateVisibility(!this.store.fileTreeIsVisible);
+    },
+    updateVisibility(visible) {
+      this.store.fileTreeIsVisible = visible;
+      localStorage.setItem(LOCAL_STORAGE_KEY, this.store.fileTreeIsVisible);
+      this.updateState(this.store.fileTreeIsVisible);
+    },
+    updateState(visible) {
+      const btn = document.querySelector('.diff-toggle-file-tree-button');
+      const [toShow, toHide] = btn.querySelectorAll('.icon');
+      const tree = document.getElementById('diff-file-tree');
+      const newTooltip = btn.getAttribute(visible ? 'data-hide-text' : 'data-show-text');
+      btn.setAttribute('data-tooltip-content', newTooltip);
+      toggleElem(tree, visible);
+      toggleElem(toShow, !visible);
+      toggleElem(toHide, visible);
+    },
+    loadMoreData() {
+      loadMoreFiles(this.store.linkLoadMore);
+    },
+  },
+};
+</script>
+<template>
+  <div v-if="store.fileTreeIsVisible" class="diff-file-tree-items">
+    <!-- only render the tree if we're visible. in many cases this is something that doesn't change very often -->
+    <DiffFileTreeItem v-for="item in fileTree" :key="item.name" :item="item"/>
+    <div v-if="store.isIncomplete" class="tw-pt-1">
+      <a :class="['ui', 'basic', 'tiny', 'button', store.isLoadingNewData ? 'disabled' : '']" @click.stop="loadMoreData">{{ store.showMoreMessage }}</a>
+    </div>
+  </div>
+</template>
+<style scoped>
+.diff-file-tree-items {
+  display: flex;
+  flex-direction: column;
+  gap: 1px;
+  margin-right: .5rem;
+}
+</style>
diff --git a/web_src/js/components/DiffFileTreeItem.vue b/web_src/js/components/DiffFileTreeItem.vue
new file mode 100644
index 00000000..0f6e5436
--- /dev/null
+++ b/web_src/js/components/DiffFileTreeItem.vue
@@ -0,0 +1,97 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {diffTreeStore} from '../modules/stores.js';
+
+export default {
+  components: {SvgIcon},
+  props: {
+    item: {
+      type: Object,
+      required: true,
+    },
+  },
+  data: () => ({
+    store: diffTreeStore(),
+    collapsed: false,
+  }),
+  methods: {
+    getIconForDiffType(pType) {
+      const diffTypes = {
+        1: {name: 'octicon-diff-added', classes: ['text', 'green']},
+        2: {name: 'octicon-diff-modified', classes: ['text', 'yellow']},
+        3: {name: 'octicon-diff-removed', classes: ['text', 'red']},
+        4: {name: 'octicon-diff-renamed', classes: ['text', 'teal']},
+        5: {name: 'octicon-diff-renamed', classes: ['text', 'green']}, // there is no octicon for copied, so renamed should be ok
+      };
+      return diffTypes[pType];
+    },
+  },
+};
+</script>
+<template>
+  <!--title instead of tooltip above as the tooltip needs too much work with the current methods, i.e. not being loaded or staying open for "too long"-->
+  <a
+    v-if="item.isFile" class="item-file"
+    :class="{'selected': store.selectedItem === '#diff-' + item.file.NameHash, 'viewed': item.file.IsViewed}"
+    :title="item.name" :href="'#diff-' + item.file.NameHash"
+  >
+    <!-- file -->
+    <SvgIcon name="octicon-file"/>
+    <span class="gt-ellipsis tw-flex-1">{{ item.name }}</span>
+    <SvgIcon :name="getIconForDiffType(item.file.Type).name" :class="getIconForDiffType(item.file.Type).classes"/>
+  </a>
+  <div v-else class="item-directory" :title="item.name" @click.stop="collapsed = !collapsed">
+    <!-- directory -->
+    <SvgIcon :name="collapsed ? 'octicon-chevron-right' : 'octicon-chevron-down'"/>
+    <SvgIcon class="text primary" name="octicon-file-directory-fill"/>
+    <span class="gt-ellipsis">{{ item.name }}</span>
+  </div>
+
+  <div v-if="item.children?.length" v-show="!collapsed" class="sub-items">
+    <DiffFileTreeItem v-for="childItem in item.children" :key="childItem.name" :item="childItem"/>
+  </div>
+</template>
+<style scoped>
+a, a:hover {
+  text-decoration: none;
+  color: var(--color-text);
+}
+
+.sub-items {
+  display: flex;
+  flex-direction: column;
+  gap: 1px;
+  margin-left: 13px;
+  border-left: 1px solid var(--color-secondary);
+}
+
+.sub-items .item-file {
+  padding-left: 18px;
+}
+
+.item-file.selected {
+  color: var(--color-text);
+  background: var(--color-active);
+  border-radius: 4px;
+}
+
+.item-file.viewed {
+  color: var(--color-text-light-3);
+}
+
+.item-file,
+.item-directory {
+  display: flex;
+  align-items: center;
+  gap: 0.25em;
+  padding: 3px 6px;
+}
+
+.item-file:hover,
+.item-directory:hover {
+  color: var(--color-text);
+  background: var(--color-hover);
+  border-radius: 4px;
+  cursor: pointer;
+}
+</style>
diff --git a/web_src/js/components/PullRequestMergeForm.vue b/web_src/js/components/PullRequestMergeForm.vue
new file mode 100644
index 00000000..bd0901a7
--- /dev/null
+++ b/web_src/js/components/PullRequestMergeForm.vue
@@ -0,0 +1,252 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {toggleElem} from '../utils/dom.js';
+
+const {csrfToken, pageData} = window.config;
+
+export default {
+  components: {SvgIcon},
+  data: () => ({
+    csrfToken,
+    mergeForm: pageData.pullRequestMergeForm,
+
+    mergeTitleFieldValue: '',
+    mergeMessageFieldValue: '',
+    deleteBranchAfterMerge: false,
+    autoMergeWhenSucceed: false,
+
+    mergeStyle: '',
+    mergeStyleDetail: { // dummy only, these values will come from one of the mergeForm.mergeStyles
+      hideMergeMessageTexts: false,
+      textDoMerge: '',
+      mergeTitleFieldText: '',
+      mergeMessageFieldText: '',
+      hideAutoMerge: false,
+    },
+    mergeStyleAllowedCount: 0,
+
+    showMergeStyleMenu: false,
+    showActionForm: false,
+  }),
+  computed: {
+    mergeButtonStyleClass() {
+      if (this.mergeForm.allOverridableChecksOk) return 'primary';
+      return this.autoMergeWhenSucceed ? 'primary' : 'red';
+    },
+    forceMerge() {
+      return this.mergeForm.canMergeNow && !this.mergeForm.allOverridableChecksOk;
+    },
+  },
+  watch: {
+    mergeStyle(val) {
+      this.mergeStyleDetail = this.mergeForm.mergeStyles.find((e) => e.name === val);
+      for (const elem of document.querySelectorAll('[data-pull-merge-style]')) {
+        toggleElem(elem, elem.getAttribute('data-pull-merge-style') === val);
+      }
+    },
+  },
+  created() {
+    this.mergeStyleAllowedCount = this.mergeForm.mergeStyles.reduce((v, msd) => v + (msd.allowed ? 1 : 0), 0);
+
+    let mergeStyle = this.mergeForm.mergeStyles.find((e) => e.allowed && e.name === this.mergeForm.defaultMergeStyle)?.name;
+    if (!mergeStyle) mergeStyle = this.mergeForm.mergeStyles.find((e) => e.allowed)?.name;
+    this.switchMergeStyle(mergeStyle, !this.mergeForm.canMergeNow);
+  },
+  mounted() {
+    document.addEventListener('mouseup', this.hideMergeStyleMenu);
+  },
+  unmounted() {
+    document.removeEventListener('mouseup', this.hideMergeStyleMenu);
+  },
+  methods: {
+    hideMergeStyleMenu() {
+      this.showMergeStyleMenu = false;
+    },
+    toggleActionForm(show) {
+      this.showActionForm = show;
+      if (!show) return;
+      this.deleteBranchAfterMerge = this.mergeForm.defaultDeleteBranchAfterMerge;
+      this.mergeTitleFieldValue = this.mergeStyleDetail.mergeTitleFieldText;
+      this.mergeMessageFieldValue = this.mergeStyleDetail.mergeMessageFieldText;
+    },
+    switchMergeStyle(name, autoMerge = false) {
+      this.mergeStyle = name;
+      this.autoMergeWhenSucceed = autoMerge;
+    },
+    clearMergeMessage() {
+      this.mergeMessageFieldValue = this.mergeForm.defaultMergeMessage;
+    },
+  },
+};
+</script>
+<template>
+  <!--
+  if this component is shown, either the user is an admin (can do a merge without checks), or they are a writer who has the permission to do a merge
+  if the user is a writer and can't do a merge now (canMergeNow==false), then only show the Auto Merge for them
+  How to test the UI manually:
+  * Method 1: manually set some variables in pull.tmpl, eg: {{$notAllOverridableChecksOk = true}} {{$canMergeNow = false}}
+  * Method 2: make a protected branch, then set state=pending/success :
+    curl -X POST ${root_url}/api/v1/repos/${owner}/${repo}/statuses/${sha} \
+      -H "accept: application/json" -H "authorization: Basic $base64_auth" -H "Content-Type: application/json" \
+      -d '{"context": "test/context", "description": "description", "state": "${state}", "target_url": "http://localhost"}'
+  -->
+  <div>
+    <!-- eslint-disable-next-line vue/no-v-html -->
+    <div v-if="mergeForm.hasPendingPullRequestMerge" v-html="mergeForm.hasPendingPullRequestMergeTip" class="ui info message"/>
+
+    <!-- another similar form is in pull.tmpl (manual merge)-->
+    <form class="ui form form-fetch-action" v-if="showActionForm" :action="mergeForm.baseLink+'/merge'" method="post">
+      <input type="hidden" name="_csrf" :value="csrfToken">
+      <input type="hidden" name="head_commit_id" v-model="mergeForm.pullHeadCommitID">
+      <input type="hidden" name="merge_when_checks_succeed" v-model="autoMergeWhenSucceed">
+      <input type="hidden" name="force_merge" v-model="forceMerge">
+
+      <template v-if="!mergeStyleDetail.hideMergeMessageTexts">
+        <div class="field">
+          <input type="text" name="merge_title_field" v-model="mergeTitleFieldValue">
+        </div>
+        <div class="field">
+          <textarea name="merge_message_field" rows="5" :placeholder="mergeForm.mergeMessageFieldPlaceHolder" v-model="mergeMessageFieldValue"/>
+          <template v-if="mergeMessageFieldValue !== mergeForm.defaultMergeMessage">
+            <button @click.prevent="clearMergeMessage" class="btn tw-mt-1 tw-p-1 interact-fg" :data-tooltip-content="mergeForm.textClearMergeMessageHint">
+              {{ mergeForm.textClearMergeMessage }}
+            </button>
+          </template>
+        </div>
+      </template>
+
+      <div class="field" v-if="mergeStyle === 'manually-merged'">
+        <input type="text" name="merge_commit_id" :placeholder="mergeForm.textMergeCommitId">
+      </div>
+
+      <button class="ui button" :class="mergeButtonStyleClass" type="submit" name="do" :value="mergeStyle">
+        {{ mergeStyleDetail.textDoMerge }}
+        <template v-if="autoMergeWhenSucceed">
+          {{ mergeForm.textAutoMergeButtonWhenSucceed }}
+        </template>
+      </button>
+
+      <button class="ui button merge-cancel" @click="toggleActionForm(false)">
+        {{ mergeForm.textCancel }}
+      </button>
+
+      <div class="ui checkbox tw-ml-1" v-if="mergeForm.isPullBranchDeletable && !autoMergeWhenSucceed">
+        <input name="delete_branch_after_merge" type="checkbox" v-model="deleteBranchAfterMerge" id="delete-branch-after-merge">
+        <label for="delete-branch-after-merge">{{ mergeForm.textDeleteBranch }}</label>
+      </div>
+    </form>
+
+    <div v-if="!showActionForm" class="tw-flex">
+      <!-- the merge button -->
+      <div class="ui buttons merge-button" :class="[mergeForm.emptyCommit ? 'grey' : mergeForm.allOverridableChecksOk ? 'primary' : 'red']" @click="toggleActionForm(true)">
+        <button class="ui button">
+          <svg-icon name="octicon-git-merge"/>
+          <span class="button-text">
+            {{ mergeStyleDetail.textDoMerge }}
+            <template v-if="autoMergeWhenSucceed">
+              {{ mergeForm.textAutoMergeButtonWhenSucceed }}
+            </template>
+          </span>
+        </button>
+        <div class="ui dropdown icon button" @click.stop="showMergeStyleMenu = !showMergeStyleMenu" v-if="mergeStyleAllowedCount>1">
+          <svg-icon name="octicon-triangle-down" :size="14"/>
+          <div class="menu" :class="{'show':showMergeStyleMenu}">
+            <template v-for="msd in mergeForm.mergeStyles">
+              <!-- if can merge now, show one action "merge now", and an action "auto merge when succeed" -->
+              <div class="item" v-if="msd.allowed && mergeForm.canMergeNow" :key="msd.name" @click.stop="switchMergeStyle(msd.name)">
+                <div class="action-text">
+                  {{ msd.textDoMerge }}
+                </div>
+                <div v-if="!msd.hideAutoMerge" class="auto-merge-small" @click.stop="switchMergeStyle(msd.name, true)">
+                  <svg-icon name="octicon-clock" :size="14"/>
+                  <div class="auto-merge-tip">
+                    {{ mergeForm.textAutoMergeWhenSucceed }}
+                  </div>
+                </div>
+              </div>
+
+              <!-- if can NOT merge now, only show one action "auto merge when succeed" -->
+              <div class="item" v-if="msd.allowed && !mergeForm.canMergeNow && !msd.hideAutoMerge" :key="msd.name" @click.stop="switchMergeStyle(msd.name, true)">
+                <div class="action-text">
+                  {{ msd.textDoMerge }} {{ mergeForm.textAutoMergeButtonWhenSucceed }}
+                </div>
+              </div>
+            </template>
+          </div>
+        </div>
+      </div>
+
+      <!-- the cancel auto merge button -->
+      <form v-if="mergeForm.hasPendingPullRequestMerge" :action="mergeForm.baseLink+'/cancel_auto_merge'" method="post" class="tw-ml-4">
+        <input type="hidden" name="_csrf" :value="csrfToken">
+        <button class="ui button">
+          {{ mergeForm.textAutoMergeCancelSchedule }}
+        </button>
+      </form>
+    </div>
+  </div>
+</template>
+<style scoped>
+/* to keep UI the same, at the moment we are still using some Fomantic UI styles, but we do not use their scripts, so we need to fine tune some styles */
+.ui.dropdown .menu.show {
+  display: block;
+}
+.ui.checkbox label {
+  cursor: pointer;
+}
+
+/* make the dropdown list left-aligned */
+.ui.merge-button {
+  position: relative;
+}
+.ui.merge-button .ui.dropdown {
+  position: static;
+}
+.ui.merge-button > .ui.dropdown:last-child > .menu:not(.left) {
+  left: 0;
+  right: auto;
+}
+.ui.merge-button .ui.dropdown .menu > .item {
+  display: flex;
+  align-items: stretch;
+  padding: 0 !important; /* polluted by semantic.css: .ui.dropdown .menu > .item { !important } */
+}
+
+/* merge style list item */
+.action-text {
+  padding: 0.8rem;
+  flex: 1
+}
+
+.auto-merge-small {
+  width: 40px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  position: relative;
+}
+.auto-merge-small .auto-merge-tip {
+  display: none;
+  left: 38px;
+  top: -1px;
+  bottom: -1px;
+  position: absolute;
+  align-items: center;
+  color: var(--color-info-text);
+  background-color: var(--color-info-bg);
+  border: 1px solid var(--color-info-border);
+  border-left: none;
+  padding-right: 1rem;
+}
+
+.auto-merge-small:hover {
+  color: var(--color-info-text);
+  background-color: var(--color-info-bg);
+  border: 1px solid var(--color-info-border);
+}
+
+.auto-merge-small:hover .auto-merge-tip {
+  display: flex;
+}
+
+</style>
diff --git a/web_src/js/components/RepoActionView.test.js b/web_src/js/components/RepoActionView.test.js
new file mode 100644
index 00000000..8c4e1506
--- /dev/null
+++ b/web_src/js/components/RepoActionView.test.js
@@ -0,0 +1,105 @@
+import {mount, flushPromises} from '@vue/test-utils';
+import RepoActionView from './RepoActionView.vue';
+
+test('processes ##[group] and ##[endgroup]', async () => {
+  Object.defineProperty(document.documentElement, 'lang', {value: 'en'});
+  vi.spyOn(global, 'fetch').mockImplementation((url, opts) => {
+    const artifacts_value = {
+      artifacts: [],
+    };
+    const stepsLog_value = [
+      {
+        step: 0,
+        cursor: 0,
+        lines: [
+          {index: 1, message: '##[group]Test group', timestamp: 0},
+          {index: 2, message: 'A test line', timestamp: 0},
+          {index: 3, message: '##[endgroup]', timestamp: 0},
+          {index: 4, message: 'A line outside the group', timestamp: 0},
+        ],
+      },
+    ];
+    const jobs_value = {
+      state: {
+        run: {
+          status: 'success',
+          commit: {
+            pusher: {},
+          },
+        },
+        currentJob: {
+          steps: [
+            {
+              summary: 'Test Job',
+              duration: '1s',
+              status: 'success',
+            },
+          ],
+        },
+      },
+      logs: {
+        stepsLog: opts.body?.includes('"cursor":null') ? stepsLog_value : [],
+      },
+    };
+
+    return Promise.resolve({
+      ok: true,
+      json: vi.fn().mockResolvedValue(
+        url.endsWith('/artifacts') ? artifacts_value : jobs_value,
+      ),
+    });
+  });
+
+  const wrapper = mount(RepoActionView, {
+    props: {
+      jobIndex: '1',
+      locale: {
+        approve: '',
+        cancel: '',
+        rerun: '',
+        artifactsTitle: '',
+        areYouSure: '',
+        confirmDeleteArtifact: '',
+        rerun_all: '',
+        showTimeStamps: '',
+        showLogSeconds: '',
+        showFullScreen: '',
+        downloadLogs: '',
+        status: {
+          unknown: '',
+          waiting: '',
+          running: '',
+          success: '',
+          failure: '',
+          cancelled: '',
+          skipped: '',
+          blocked: '',
+        },
+      },
+    },
+  });
+  await flushPromises();
+  await wrapper.get('.job-step-summary').trigger('click');
+  await flushPromises();
+
+  // Test if header was loaded correctly
+  expect(wrapper.get('.step-summary-msg').text()).toEqual('Test Job');
+
+  // Check if 3 lines where rendered
+  expect(wrapper.findAll('.job-log-line').length).toEqual(3);
+
+  // Check if line 1 contains the group header
+  expect(wrapper.get('.job-log-line:nth-of-type(1) > details.log-msg').text()).toEqual('Test group');
+
+  // Check if right after the header line exists a log list
+  expect(wrapper.find('.job-log-line:nth-of-type(1) + .job-log-list.hidden').exists()).toBe(true);
+
+  // Check if inside the loglist exist exactly one log line
+  expect(wrapper.findAll('.job-log-list > .job-log-line').length).toEqual(1);
+
+  // Check if inside the loglist is an logline with our second logline
+  expect(wrapper.get('.job-log-list > .job-log-line > .log-msg').text()).toEqual('A test line');
+
+  // Check if after the log list exists another log line
+  expect(wrapper.get('.job-log-list + .job-log-line > .log-msg').text()).toEqual('A line outside the group');
+});
diff --git a/web_src/js/components/RepoActionView.vue b/web_src/js/components/RepoActionView.vue
new file mode 100644
index 00000000..fae4500b
--- /dev/null
+++ b/web_src/js/components/RepoActionView.vue
@@ -0,0 +1,905 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import ActionRunStatus from './ActionRunStatus.vue';
+import {createApp} from 'vue';
+import {toggleElem} from '../utils/dom.js';
+import {formatDatetime} from '../utils/time.js';
+import {renderAnsi} from '../render/ansi.js';
+import {GET, POST, DELETE} from '../modules/fetch.js';
+
+const sfc = {
+  name: 'RepoActionView',
+  components: {
+    SvgIcon,
+    ActionRunStatus,
+  },
+  props: {
+    runIndex: String,
+    jobIndex: String,
+    actionsURL: String,
+    workflowName: String,
+    workflowURL: String,
+    locale: Object,
+  },
+
+  data() {
+    return {
+      // internal state
+      loading: false,
+      intervalID: null,
+      currentJobStepsStates: [],
+      artifacts: [],
+      onHoverRerunIndex: -1,
+      menuVisible: false,
+      isFullScreen: false,
+      timeVisible: {
+        'log-time-stamp': false,
+        'log-time-seconds': false,
+      },
+
+      // provided by backend
+      run: {
+        link: '',
+        title: '',
+        status: '',
+        canCancel: false,
+        canApprove: false,
+        canRerun: false,
+        done: false,
+        jobs: [
+          // {
+          //   id: 0,
+          //   name: '',
+          //   status: '',
+          //   canRerun: false,
+          //   duration: '',
+          // },
+        ],
+        commit: {
+          localeCommit: '',
+          localePushedBy: '',
+          localeWorkflow: '',
+          shortSHA: '',
+          link: '',
+          pusher: {
+            displayName: '',
+            link: '',
+          },
+          branch: {
+            name: '',
+            link: '',
+          },
+        },
+      },
+      currentJob: {
+        title: '',
+        detail: '',
+        steps: [
+          // {
+          //   summary: '',
+          //   duration: '',
+          //   status: '',
+          // }
+        ],
+      },
+    };
+  },
+
+  async mounted() {
+    // load job data and then auto-reload periodically
+    // need to await first loadJob so this.currentJobStepsStates is initialized and can be used in hashChangeListener
+    await this.loadJob();
+    this.intervalID = setInterval(this.loadJob, 1000);
+    document.body.addEventListener('click', this.closeDropdown);
+    this.hashChangeListener();
+    window.addEventListener('hashchange', this.hashChangeListener);
+  },
+
+  beforeUnmount() {
+    document.body.removeEventListener('click', this.closeDropdown);
+    window.removeEventListener('hashchange', this.hashChangeListener);
+  },
+
+  unmounted() {
+    // clear the interval timer when the component is unmounted
+    // even our page is rendered once, not spa style
+    if (this.intervalID) {
+      clearInterval(this.intervalID);
+      this.intervalID = null;
+    }
+  },
+
+  methods: {
+    // show/hide the step logs for a step
+    toggleStepLogs(idx) {
+      this.currentJobStepsStates[idx].expanded = !this.currentJobStepsStates[idx].expanded;
+      if (this.currentJobStepsStates[idx].expanded) {
+        this.loadJob(); // try to load the data immediately instead of waiting for next timer interval
+      }
+    },
+    // cancel a run
+    cancelRun() {
+      POST(`${this.run.link}/cancel`);
+    },
+    // approve a run
+    approveRun() {
+      POST(`${this.run.link}/approve`);
+    },
+    // show/hide the step logs for a group
+    toggleGroupLogs(event) {
+      const line = event.target.parentElement;
+      const list = line.nextSibling;
+      if (event.newState === 'open') {
+        list.classList.remove('hidden');
+      } else {
+        list.classList.add('hidden');
+      }
+    },
+
+    createLogLine(line, startTime, stepIndex, group) {
+      const div = document.createElement('div');
+      div.classList.add('job-log-line');
+      div.setAttribute('id', `jobstep-${stepIndex}-${line.index}`);
+      div._jobLogTime = line.timestamp;
+
+      const lineNumber = document.createElement('a');
+      lineNumber.classList.add('line-num', 'muted');
+      lineNumber.textContent = line.index;
+      lineNumber.setAttribute('href', `#jobstep-${stepIndex}-${line.index}`);
+      div.append(lineNumber);
+
+      // for "Show timestamps"
+      const logTimeStamp = document.createElement('span');
+      logTimeStamp.className = 'log-time-stamp';
+      const date = new Date(parseFloat(line.timestamp * 1000));
+      const timeStamp = formatDatetime(date);
+      logTimeStamp.textContent = timeStamp;
+      toggleElem(logTimeStamp, this.timeVisible['log-time-stamp']);
+      // for "Show seconds"
+      const logTimeSeconds = document.createElement('span');
+      logTimeSeconds.className = 'log-time-seconds';
+      const seconds = Math.floor(parseFloat(line.timestamp) - parseFloat(startTime));
+      logTimeSeconds.textContent = `${seconds}s`;
+      toggleElem(logTimeSeconds, this.timeVisible['log-time-seconds']);
+
+      let logMessage = document.createElement('span');
+      logMessage.innerHTML = renderAnsi(line.message);
+      if (group.isHeader) {
+        const details = document.createElement('details');
+        details.addEventListener('toggle', this.toggleGroupLogs);
+        const summary = document.createElement('summary');
+        summary.append(logMessage);
+        details.append(summary);
+        logMessage = details;
+      }
+      logMessage.className = 'log-msg';
+      logMessage.style.paddingLeft = `${group.depth}em`;
+
+      div.append(logTimeStamp);
+      div.append(logMessage);
+      div.append(logTimeSeconds);
+
+      return div;
+    },
+
+    appendLogs(stepIndex, logLines, startTime) {
+      const groupStack = [];
+      const container = this.$refs.logs[stepIndex];
+      for (const line of logLines) {
+        const el = groupStack.length > 0 ? groupStack[groupStack.length - 1] : container;
+        const group = {
+          depth: groupStack.length,
+          isHeader: false,
+        };
+        if (line.message.startsWith('##[group]')) {
+          group.isHeader = true;
+
+          const logLine = this.createLogLine(
+            {
+              ...line,
+              message: line.message.substring(9),
+            },
+            startTime, stepIndex, group,
+          );
+          logLine.setAttribute('data-group', group.index);
+          el.append(logLine);
+
+          const list = document.createElement('div');
+          list.classList.add('job-log-list');
+          list.classList.add('hidden');
+          list.setAttribute('data-group', group.index);
+          groupStack.push(list);
+          el.append(list);
+        } else if (line.message.startsWith('##[endgroup]')) {
+          groupStack.pop();
+        } else {
+          el.append(this.createLogLine(line, startTime, stepIndex, group));
+        }
+      }
+    },
+
+    async fetchArtifacts() {
+      const resp = await GET(`${this.actionsURL}/runs/${this.runIndex}/artifacts`);
+      return await resp.json();
+    },
+
+    async deleteArtifact(name) {
+      if (!window.confirm(this.locale.confirmDeleteArtifact.replace('%s', name))) return;
+      await DELETE(`${this.run.link}/artifacts/${name}`);
+      await this.loadJob();
+    },
+
+    async fetchJob() {
+      const logCursors = this.currentJobStepsStates.map((it, idx) => {
+        // cursor is used to indicate the last position of the logs
+        // it's only used by backend, frontend just reads it and passes it back, it and can be any type.
+        // for example: make cursor=null means the first time to fetch logs, cursor=eof means no more logs, etc
+        return {step: idx, cursor: it.cursor, expanded: it.expanded};
+      });
+      const resp = await POST(`${this.actionsURL}/runs/${this.runIndex}/jobs/${this.jobIndex}`, {
+        data: {logCursors},
+      });
+      return await resp.json();
+    },
+
+    async loadJob() {
+      if (this.loading) return;
+      try {
+        this.loading = true;
+
+        let job, artifacts;
+        try {
+          [job, artifacts] = await Promise.all([
+            this.fetchJob(),
+            this.fetchArtifacts(), // refresh artifacts if upload-artifact step done
+          ]);
+        } catch (err) {
+          if (err instanceof TypeError) return; // avoid network error while unloading page
+          throw err;
+        }
+
+        this.artifacts = artifacts['artifacts'] || [];
+
+        // save the state to Vue data, then the UI will be updated
+        this.run = job.state.run;
+        this.currentJob = job.state.currentJob;
+
+        // sync the currentJobStepsStates to store the job step states
+        for (let i = 0; i < this.currentJob.steps.length; i++) {
+          if (!this.currentJobStepsStates[i]) {
+            // initial states for job steps
+            this.currentJobStepsStates[i] = {cursor: null, expanded: false};
+          }
+        }
+        // append logs to the UI
+        for (const logs of job.logs.stepsLog) {
+          // save the cursor, it will be passed to backend next time
+          this.currentJobStepsStates[logs.step].cursor = logs.cursor;
+          this.appendLogs(logs.step, logs.lines, logs.started);
+        }
+
+        if (this.run.done && this.intervalID) {
+          clearInterval(this.intervalID);
+          this.intervalID = null;
+        }
+      } finally {
+        this.loading = false;
+      }
+    },
+
+    isDone(status) {
+      return ['success', 'skipped', 'failure', 'cancelled'].includes(status);
+    },
+
+    isExpandable(status) {
+      return ['success', 'running', 'failure', 'cancelled'].includes(status);
+    },
+
+    closeDropdown() {
+      if (this.menuVisible) this.menuVisible = false;
+    },
+
+    toggleTimeDisplay(type) {
+      this.timeVisible[`log-time-${type}`] = !this.timeVisible[`log-time-${type}`];
+      for (const el of this.$refs.steps.querySelectorAll(`.log-time-${type}`)) {
+        toggleElem(el, this.timeVisible[`log-time-${type}`]);
+      }
+    },
+
+    toggleFullScreen() {
+      this.isFullScreen = !this.isFullScreen;
+      const fullScreenEl = document.querySelector('.action-view-right');
+      const outerEl = document.querySelector('.full.height');
+      const actionBodyEl = document.querySelector('.action-view-body');
+      const headerEl = document.querySelector('#navbar');
+      const contentEl = document.querySelector('.page-content.repository');
+      const footerEl = document.querySelector('.page-footer');
+      toggleElem(headerEl, !this.isFullScreen);
+      toggleElem(contentEl, !this.isFullScreen);
+      toggleElem(footerEl, !this.isFullScreen);
+      // move .action-view-right to new parent
+      if (this.isFullScreen) {
+        outerEl.append(fullScreenEl);
+      } else {
+        actionBodyEl.append(fullScreenEl);
+      }
+    },
+    async hashChangeListener() {
+      const selectedLogStep = window.location.hash;
+      if (!selectedLogStep) return;
+      const [_, step, _line] = selectedLogStep.split('-');
+      if (!this.currentJobStepsStates[step]) return;
+      if (!this.currentJobStepsStates[step].expanded && this.currentJobStepsStates[step].cursor === null) {
+        this.currentJobStepsStates[step].expanded = true;
+        // need to await for load job if the step log is loaded for the first time
+        // so logline can be selected by querySelector
+        await this.loadJob();
+      }
+      const logLine = this.$refs.steps.querySelector(selectedLogStep);
+      if (!logLine) return;
+      logLine.querySelector('.line-num').click();
+    },
+  },
+};
+
+export default sfc;
+
+export function initRepositoryActionView() {
+  const el = document.getElementById('repo-action-view');
+  if (!el) return;
+
+  // TODO: the parent element's full height doesn't work well now,
+  // but we can not pollute the global style at the moment, only fix the height problem for pages with this component
+  const parentFullHeight = document.querySelector('body > div.full.height');
+  if (parentFullHeight) parentFullHeight.style.paddingBottom = '0';
+
+  const view = createApp(sfc, {
+    runIndex: el.getAttribute('data-run-index'),
+    jobIndex: el.getAttribute('data-job-index'),
+    actionsURL: el.getAttribute('data-actions-url'),
+    workflowName: el.getAttribute('data-workflow-name'),
+    workflowURL: el.getAttribute('data-workflow-url'),
+    locale: {
+      approve: el.getAttribute('data-locale-approve'),
+      cancel: el.getAttribute('data-locale-cancel'),
+      rerun: el.getAttribute('data-locale-rerun'),
+      artifactsTitle: el.getAttribute('data-locale-artifacts-title'),
+      areYouSure: el.getAttribute('data-locale-are-you-sure'),
+      confirmDeleteArtifact: el.getAttribute('data-locale-confirm-delete-artifact'),
+      rerun_all: el.getAttribute('data-locale-rerun-all'),
+      showTimeStamps: el.getAttribute('data-locale-show-timestamps'),
+      showLogSeconds: el.getAttribute('data-locale-show-log-seconds'),
+      showFullScreen: el.getAttribute('data-locale-show-full-screen'),
+      downloadLogs: el.getAttribute('data-locale-download-logs'),
+      status: {
+        unknown: el.getAttribute('data-locale-status-unknown'),
+        waiting: el.getAttribute('data-locale-status-waiting'),
+        running: el.getAttribute('data-locale-status-running'),
+        success: el.getAttribute('data-locale-status-success'),
+        failure: el.getAttribute('data-locale-status-failure'),
+        cancelled: el.getAttribute('data-locale-status-cancelled'),
+        skipped: el.getAttribute('data-locale-status-skipped'),
+        blocked: el.getAttribute('data-locale-status-blocked'),
+      },
+    },
+  });
+  view.mount(el);
+}
+</script>
+<template>
+  <div class="ui container action-view-container">
+    <div class="action-view-header">
+      <div class="action-info-summary">
+        <div class="action-info-summary-title">
+          <ActionRunStatus :locale-status="locale.status[run.status]" :status="run.status" :size="20"/>
+          <h2 class="action-info-summary-title-text">
+            {{ run.title }}
+          </h2>
+        </div>
+        <button class="ui basic small compact button primary" @click="approveRun()" v-if="run.canApprove">
+          {{ locale.approve }}
+        </button>
+        <button class="ui basic small compact button red" @click="cancelRun()" v-else-if="run.canCancel">
+          {{ locale.cancel }}
+        </button>
+        <button class="ui basic small compact button tw-mr-0 tw-whitespace-nowrap link-action" :data-url="`${run.link}/rerun`" v-else-if="run.canRerun">
+          {{ locale.rerun_all }}
+        </button>
+      </div>
+      <div class="action-summary">
+        {{ run.commit.localeCommit }}
+        <a class="muted" :href="run.commit.link">{{ run.commit.shortSHA }}</a>
+        {{ run.commit.localePushedBy }}
+        <a class="muted" :href="run.commit.pusher.link">{{ run.commit.pusher.displayName }}</a>
+        <span class="ui label tw-max-w-full" v-if="run.commit.shortSHA">
+          <a class="gt-ellipsis" :href="run.commit.branch.link">{{ run.commit.branch.name }}</a>
+        </span>
+      </div>
+      <div class="action-summary">
+        {{ run.commit.localeWorkflow }}
+        <a class="muted" :href="workflowURL">{{ workflowName }}</a>
+      </div>
+    </div>
+    <div class="action-view-body">
+      <div class="action-view-left">
+        <div class="job-group-section">
+          <div class="job-brief-list">
+            <a class="job-brief-item" :href="run.link+'/jobs/'+index" :class="parseInt(jobIndex) === index ? 'selected' : ''" v-for="(job, index) in run.jobs" :key="job.id" @mouseenter="onHoverRerunIndex = job.id" @mouseleave="onHoverRerunIndex = -1">
+              <div class="job-brief-item-left">
+                <ActionRunStatus :locale-status="locale.status[job.status]" :status="job.status"/>
+                <span class="job-brief-name tw-mx-2 gt-ellipsis">{{ job.name }}</span>
+              </div>
+              <span class="job-brief-item-right">
+                <SvgIcon name="octicon-sync" role="button" :data-tooltip-content="locale.rerun" class="job-brief-rerun tw-mx-2 link-action" :data-url="`${run.link}/jobs/${index}/rerun`" v-if="job.canRerun && onHoverRerunIndex === job.id"/>
+                <span class="step-summary-duration">{{ job.duration }}</span>
+              </span>
+            </a>
+          </div>
+        </div>
+        <div class="job-artifacts" v-if="artifacts.length > 0">
+          <div class="job-artifacts-title">
+            {{ locale.artifactsTitle }}
+          </div>
+          <ul class="job-artifacts-list">
+            <li class="job-artifacts-item" v-for="artifact in artifacts" :key="artifact.name">
+              <a class="job-artifacts-link" target="_blank" :href="run.link+'/artifacts/'+artifact.name">
+                <SvgIcon name="octicon-file" class="ui text black job-artifacts-icon"/>{{ artifact.name }}
+              </a>
+              <a v-if="run.canDeleteArtifact" @click="deleteArtifact(artifact.name)" class="job-artifacts-delete">
+                <SvgIcon name="octicon-trash" class="ui text black job-artifacts-icon"/>
+              </a>
+            </li>
+          </ul>
+        </div>
+      </div>
+
+      <div class="action-view-right">
+        <div class="job-info-header">
+          <div class="job-info-header-left gt-ellipsis">
+            <h3 class="job-info-header-title gt-ellipsis">
+              {{ currentJob.title }}
+            </h3>
+            <p class="job-info-header-detail">
+              {{ currentJob.detail }}
+            </p>
+          </div>
+          <div class="job-info-header-right">
+            <div class="ui top right pointing dropdown custom jump item" @click.stop="menuVisible = !menuVisible" @keyup.enter="menuVisible = !menuVisible">
+              <button class="btn gt-interact-bg tw-p-2">
+                <SvgIcon name="octicon-gear" :size="18"/>
+              </button>
+              <div class="menu transition action-job-menu" :class="{visible: menuVisible}" v-if="menuVisible" v-cloak>
+                <a class="item" @click="toggleTimeDisplay('seconds')">
+                  <i class="icon"><SvgIcon :name="timeVisible['log-time-seconds'] ? 'octicon-check' : 'gitea-empty-checkbox'"/></i>
+                  {{ locale.showLogSeconds }}
+                </a>
+                <a class="item" @click="toggleTimeDisplay('stamp')">
+                  <i class="icon"><SvgIcon :name="timeVisible['log-time-stamp'] ? 'octicon-check' : 'gitea-empty-checkbox'"/></i>
+                  {{ locale.showTimeStamps }}
+                </a>
+                <a class="item" @click="toggleFullScreen()">
+                  <i class="icon"><SvgIcon :name="isFullScreen ? 'octicon-check' : 'gitea-empty-checkbox'"/></i>
+                  {{ locale.showFullScreen }}
+                </a>
+                <div class="divider"/>
+                <a :class="['item', !currentJob.steps.length ? 'disabled' : '']" :href="run.link+'/jobs/'+jobIndex+'/logs'" target="_blank">
+                  <i class="icon"><SvgIcon name="octicon-download"/></i>
+                  {{ locale.downloadLogs }}
+                </a>
+              </div>
+            </div>
+          </div>
+        </div>
+        <div class="job-step-container" ref="steps" v-if="currentJob.steps.length">
+          <div class="job-step-section" v-for="(jobStep, i) in currentJob.steps" :key="i">
+            <div class="job-step-summary" @click.stop="isExpandable(jobStep.status) && toggleStepLogs(i)" :class="[currentJobStepsStates[i].expanded ? 'selected' : '', isExpandable(jobStep.status) && 'step-expandable']">
+              <!-- If the job is done and the job step log is loaded for the first time, show the loading icon
+                currentJobStepsStates[i].cursor === null means the log is loaded for the first time
+              -->
+              <SvgIcon v-if="isDone(run.status) && currentJobStepsStates[i].expanded && currentJobStepsStates[i].cursor === null" name="octicon-sync" class="tw-mr-2 job-status-rotate"/>
+              <SvgIcon v-else :name="currentJobStepsStates[i].expanded ? 'octicon-chevron-down': 'octicon-chevron-right'" :class="['tw-mr-2', !isExpandable(jobStep.status) && 'tw-invisible']"/>
+              <ActionRunStatus :status="jobStep.status" class="tw-mr-2"/>
+
+              <span class="step-summary-msg gt-ellipsis">{{ jobStep.summary }}</span>
+              <span class="step-summary-duration">{{ jobStep.duration }}</span>
+            </div>
+
+            <!-- the log elements could be a lot, do not use v-if to destroy/reconstruct the DOM,
+            use native DOM elements for "log line" to improve performance, Vue is not suitable for managing so many reactive elements. -->
+            <div class="job-step-logs" ref="logs" v-show="currentJobStepsStates[i].expanded"/>
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+<style scoped>
+.action-view-body {
+  padding-top: 12px;
+  padding-bottom: 12px;
+  display: flex;
+  gap: 12px;
+}
+
+/* ================ */
+/* action view header */
+
+.action-view-header {
+  margin-top: 8px;
+}
+
+.action-info-summary {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 8px;
+}
+
+.action-info-summary-title {
+  display: flex;
+}
+
+.action-info-summary-title-text {
+  font-size: 20px;
+  margin: 0 0 0 8px;
+  flex: 1;
+  overflow-wrap: anywhere;
+}
+
+.action-summary {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 5px;
+  margin-left: 28px;
+}
+
+@media (max-width: 767.98px) {
+  .action-commit-summary {
+    margin-left: 0;
+    margin-top: 8px;
+  }
+}
+
+/* ================ */
+/* action view left */
+
+.action-view-left {
+  width: 30%;
+  max-width: 400px;
+  position: sticky;
+  top: 12px;
+  max-height: 100vh;
+  overflow-y: auto;
+  background: var(--color-body);
+  z-index: 2; /* above .job-info-header */
+}
+
+@media (max-width: 767.98px) {
+  .action-view-left {
+    position: static; /* can not sticky because multiple jobs would overlap into right view */
+  }
+}
+
+.job-artifacts-title {
+  font-size: 18px;
+  margin-top: 16px;
+  padding: 16px 10px 0 20px;
+  border-top: 1px solid var(--color-secondary);
+}
+
+.job-artifacts-item {
+  margin: 5px 0;
+  padding: 6px;
+  display: flex;
+  justify-content: space-between;
+}
+
+.job-artifacts-list {
+  padding-left: 12px;
+  list-style: none;
+}
+
+.job-artifacts-icon {
+  padding-right: 3px;
+}
+
+.job-brief-list {
+  display: flex;
+  flex-direction: column;
+  gap: 8px;
+}
+
+.job-brief-item {
+  padding: 10px;
+  border-radius: var(--border-radius);
+  text-decoration: none;
+  display: flex;
+  flex-wrap: nowrap;
+  justify-content: space-between;
+  align-items: center;
+  color: var(--color-text);
+}
+
+.job-brief-item:hover {
+  background-color: var(--color-hover);
+}
+
+.job-brief-item.selected {
+  font-weight: var(--font-weight-bold);
+  background-color: var(--color-active);
+}
+
+.job-brief-item:first-of-type {
+  margin-top: 0;
+}
+
+.job-brief-item .job-brief-rerun {
+  cursor: pointer;
+  transition: transform 0.2s;
+}
+
+.job-brief-item .job-brief-rerun:hover {
+  transform: scale(130%);
+}
+
+.job-brief-item .job-brief-item-left {
+  display: flex;
+  width: 100%;
+  min-width: 0;
+}
+
+.job-brief-item .job-brief-item-left span {
+  display: flex;
+  align-items: center;
+}
+
+.job-brief-item .job-brief-item-left .job-brief-name {
+  display: block;
+  width: 70%;
+}
+
+.job-brief-item .job-brief-item-right {
+  display: flex;
+  align-items: center;
+}
+
+/* ================ */
+/* action view right */
+
+.action-view-right {
+  flex: 1;
+  color: var(--color-console-fg-subtle);
+  max-height: 100%;
+  width: 70%;
+  display: flex;
+  flex-direction: column;
+  border: 1px solid var(--color-console-border);
+  border-radius: var(--border-radius);
+  background: var(--color-console-bg);
+  align-self: flex-start;
+}
+
+/* begin fomantic button overrides */
+
+.action-view-right .ui.button,
+.action-view-right .ui.button:focus {
+  background: transparent;
+  color: var(--color-console-fg-subtle);
+}
+
+.action-view-right .ui.button:hover {
+  background: var(--color-console-hover-bg);
+  color: var(--color-console-fg);
+}
+
+.action-view-right .ui.button:active {
+  background: var(--color-console-active-bg);
+  color: var(--color-console-fg);
+}
+
+/* end fomantic button overrides */
+
+/* begin fomantic dropdown menu overrides */
+
+.action-view-right .ui.dropdown .menu {
+  background: var(--color-console-menu-bg);
+  border-color: var(--color-console-menu-border);
+}
+
+.action-view-right .ui.dropdown .menu > .item {
+  color: var(--color-console-fg);
+}
+
+.action-view-right .ui.dropdown .menu > .item:hover {
+  color: var(--color-console-fg);
+  background: var(--color-console-hover-bg);
+}
+
+.action-view-right .ui.dropdown .menu > .item:active {
+  color: var(--color-console-fg);
+  background: var(--color-console-active-bg);
+}
+
+.action-view-right .ui.dropdown .menu > .divider {
+  border-top-color: var(--color-console-menu-border);
+}
+
+.action-view-right .ui.pointing.dropdown > .menu:not(.hidden)::after {
+  background: var(--color-console-menu-bg);
+  box-shadow: -1px -1px 0 0 var(--color-console-menu-border);
+}
+
+/* end fomantic dropdown menu overrides */
+
+.job-info-header {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 0 12px;
+  position: sticky;
+  top: 0;
+  height: 60px;
+  z-index: 1; /* above .job-step-container */
+  background: var(--color-console-bg);
+  border-radius: 3px;
+}
+
+.job-info-header:has(+ .job-step-container) {
+  border-radius: var(--border-radius) var(--border-radius) 0 0;
+}
+
+.job-info-header .job-info-header-title {
+  color: var(--color-console-fg);
+  font-size: 16px;
+  margin: 0;
+}
+
+.job-info-header .job-info-header-detail {
+  color: var(--color-console-fg-subtle);
+  font-size: 12px;
+}
+
+.job-info-header-left {
+  flex: 1;
+}
+
+.job-step-container {
+  max-height: 100%;
+  border-radius: 0 0 var(--border-radius) var(--border-radius);
+  border-top: 1px solid var(--color-console-border);
+  z-index: 0;
+}
+
+.job-step-container .job-step-summary {
+  padding: 5px 10px;
+  display: flex;
+  align-items: center;
+  border-radius: var(--border-radius);
+}
+
+.job-step-container .job-step-summary.step-expandable {
+  cursor: pointer;
+}
+
+.job-step-container .job-step-summary.step-expandable:hover {
+  color: var(--color-console-fg);
+  background: var(--color-console-hover-bg);
+}
+
+.job-step-container .job-step-summary .step-summary-msg {
+  flex: 1;
+}
+
+.job-step-container .job-step-summary .step-summary-duration {
+  margin-left: 16px;
+}
+
+.job-step-container .job-step-summary.selected {
+  color: var(--color-console-fg);
+  background-color: var(--color-console-active-bg);
+  position: sticky;
+  top: 60px;
+}
+
+@media (max-width: 767.98px) {
+  .action-view-body {
+    flex-direction: column;
+  }
+  .action-view-left, .action-view-right {
+    width: 100%;
+  }
+  .action-view-left {
+    max-width: none;
+  }
+}
+</style>
+
+<style>
+/* some elements are not managed by vue, so we need to use global style */
+.job-status-rotate {
+  animation: job-status-rotate-keyframes 1s linear infinite;
+}
+
+@keyframes job-status-rotate-keyframes {
+  100% {
+    transform: rotate(-360deg);
+  }
+}
+
+.job-step-section {
+  margin: 10px;
+}
+
+.job-step-section .job-step-logs {
+  font-family: var(--fonts-monospace);
+  margin: 8px 0;
+  font-size: 12px;
+}
+
+.job-step-section .job-step-logs .job-log-line {
+  display: flex;
+}
+
+.job-log-line:hover,
+.job-log-line:target {
+  background-color: var(--color-console-hover-bg);
+}
+
+.job-log-line:target {
+  scroll-margin-top: 95px;
+}
+
+/* class names 'log-time-seconds' and 'log-time-stamp' are used in the method toggleTimeDisplay */
+.job-log-line .line-num, .log-time-seconds {
+  width: 48px;
+  color: var(--color-text-light-3);
+  text-align: right;
+  user-select: none;
+}
+
+.job-log-line:target > .line-num {
+  color: var(--color-primary);
+  text-decoration: underline;
+}
+
+.log-time-seconds {
+  padding-right: 2px;
+}
+
+.job-log-line .log-time,
+.log-time-stamp {
+  color: var(--color-text-light-3);
+  margin-left: 10px;
+  white-space: nowrap;
+}
+
+.job-step-section .job-step-logs .job-log-line .log-msg {
+  flex: 1;
+  word-break: break-all;
+  white-space: break-spaces;
+  margin-left: 10px;
+  overflow-wrap: anywhere;
+}
+
+/* selectors here are intentionally exact to only match fullscreen */
+
+.full.height > .action-view-right {
+  width: 100%;
+  height: 100%;
+  padding: 0;
+  border-radius: 0;
+}
+
+.full.height > .action-view-right > .job-info-header {
+  border-radius: 0;
+}
+
+.full.height > .action-view-right > .job-step-container {
+  height: calc(100% - 60px);
+  border-radius: 0;
+}
+
+.job-log-list.hidden {
+  display: none;
+}
+</style>
diff --git a/web_src/js/components/RepoActivityTopAuthors.vue b/web_src/js/components/RepoActivityTopAuthors.vue
new file mode 100644
index 00000000..3752bc58
--- /dev/null
+++ b/web_src/js/components/RepoActivityTopAuthors.vue
@@ -0,0 +1,164 @@
+<script>
+import {Bar} from 'vue-chartjs';
+import {
+  Chart,
+  Tooltip,
+  BarElement,
+  CategoryScale,
+  LinearScale,
+} from 'chart.js';
+import {chartJsColors} from '../utils/color.js';
+import {createApp} from 'vue';
+
+Chart.defaults.color = chartJsColors.text;
+Chart.defaults.borderColor = chartJsColors.border;
+
+Chart.register(
+  CategoryScale,
+  LinearScale,
+  BarElement,
+  Tooltip,
+);
+
+const sfc = {
+  components: {Bar},
+  props: {
+    locale: {
+      type: Object,
+      required: true,
+    },
+  },
+  data: () => ({
+    colors: {
+      barColor: 'green',
+    },
+
+    // possible keys:
+    // * avatar_link: (...)
+    // * commits: (...)
+    // * home_link: (...)
+    // * login: (...)
+    // * name: (...)
+    activityTopAuthors: window.config.pageData.repoActivityTopAuthors || [],
+    i18nCommitActivity: this,
+  }),
+  methods: {
+    graphPoints() {
+      return {
+        datasets: [{
+          label: this.locale.commitActivity,
+          data: this.activityTopAuthors.map((item) => item.commits),
+          backgroundColor: this.colors.barColor,
+          barThickness: 40,
+          borderWidth: 0,
+          tension: 0.3,
+        }],
+        labels: this.activityTopAuthors.map((item) => item.name),
+      };
+    },
+    getOptions() {
+      return {
+        responsive: true,
+        maintainAspectRatio: false,
+        animation: true,
+        scales: {
+          x: {
+            type: 'category',
+            grid: {
+              display: false,
+            },
+            ticks: {
+              // Disable the drawing of the labels on the x-asis and force them all
+              // of them to be 'shown', this avoids them being internally skipped
+              // for some data points. We rely on the internally generated ticks
+              // to know where to draw our own ticks. Set rotation to 90 degree
+              // and disable autoSkip. autoSkip is disabled to ensure no ticks are
+              // skipped and rotation is set to avoid messing with the width of the chart.
+              color: 'transparent',
+              minRotation: 90,
+              maxRotation: 90,
+              autoSkip: false,
+            },
+          },
+          y: {
+            ticks: {
+              stepSize: 1,
+            },
+          },
+        },
+      };
+    },
+  },
+  mounted() {
+    const refStyle = window.getComputedStyle(this.$refs.style);
+    this.colors.barColor = refStyle.backgroundColor;
+
+    for (const item of this.activityTopAuthors) {
+      const img = new Image();
+      img.src = item.avatar_link;
+      item.avatar_img = img;
+    }
+
+    Chart.register({
+      id: 'image_label',
+      afterDraw: (chart) => {
+        const xAxis = chart.boxes[0];
+        const yAxis = chart.boxes[1];
+        for (const [index] of xAxis.ticks.entries()) {
+          const x = xAxis.getPixelForTick(index);
+          const img = this.activityTopAuthors[index].avatar_img;
+
+          chart.ctx.save();
+          chart.ctx.drawImage(img, 0, 0, img.naturalWidth, img.naturalHeight, x - 10, yAxis.bottom + 10, 20, 20);
+          chart.ctx.restore();
+        }
+      },
+      beforeEvent: (chart, args) => {
+        const event = args.event;
+        if (event.type !== 'mousemove' && event.type !== 'click') return;
+
+        const yAxis = chart.boxes[1];
+        if (event.y < yAxis.bottom + 10 || event.y > yAxis.bottom + 30) {
+          chart.canvas.style.cursor = '';
+          return;
+        }
+
+        const xAxis = chart.boxes[0];
+        const pointIdx = xAxis.ticks.findIndex((_, index) => {
+          const x = xAxis.getPixelForTick(index);
+          return event.x >= x - 10 && event.x <= x + 10;
+        });
+
+        if (pointIdx === -1) {
+          chart.canvas.style.cursor = '';
+          return;
+        }
+
+        chart.canvas.style.cursor = 'pointer';
+        if (event.type === 'click' && this.activityTopAuthors[pointIdx].home_link) {
+          window.location.href = this.activityTopAuthors[pointIdx].home_link;
+        }
+      },
+    });
+  },
+};
+
+export function initRepoActivityTopAuthorsChart() {
+  const el = document.getElementById('repo-activity-top-authors-chart');
+  if (el) {
+    createApp(sfc, {
+      locale: {
+        commitActivity: el.getAttribute('data-locale-commit-activity'),
+      },
+    }).mount(el);
+  }
+}
+
+export default sfc; // activate the IDE's Vue plugin
+</script>
+<template>
+  <div>
+    <div class="activity-bar-graph" ref="style" style="width: 0; height: 0;"/>
+    <Bar height="150px" :data="graphPoints()" :options="getOptions()"/>
+  </div>
+</template>
diff --git a/web_src/js/components/RepoBranchTagSelector.vue b/web_src/js/components/RepoBranchTagSelector.vue
new file mode 100644
index 00000000..bfba2037
--- /dev/null
+++ b/web_src/js/components/RepoBranchTagSelector.vue
@@ -0,0 +1,357 @@
+<script>
+import {createApp, nextTick} from 'vue';
+import $ from 'jquery';
+import {SvgIcon} from '../svg.js';
+import {pathEscapeSegments} from '../utils/url.js';
+import {showErrorToast} from '../modules/toast.js';
+import {GET} from '../modules/fetch.js';
+
+const sfc = {
+  components: {SvgIcon},
+
+  // no `data()`, at the moment, the `data()` is provided by the init code, which is not ideal and should be fixed in the future
+
+  computed: {
+    filteredItems() {
+      const items = this.items.filter((item) => {
+        return ((this.mode === 'branches' && item.branch) || (this.mode === 'tags' && item.tag)) &&
+          (!this.searchTerm || item.name.toLowerCase().includes(this.searchTerm.toLowerCase()));
+      });
+
+      // TODO: fix this anti-pattern: side-effects-in-computed-properties
+      this.active = !items.length && this.showCreateNewBranch ? 0 : -1;
+      return items;
+    },
+    showNoResults() {
+      return !this.filteredItems.length && !this.showCreateNewBranch;
+    },
+    showCreateNewBranch() {
+      if (this.disableCreateBranch || !this.searchTerm) {
+        return false;
+      }
+      return !this.items.filter((item) => {
+        return item.name.toLowerCase() === this.searchTerm.toLowerCase();
+      }).length;
+    },
+    formActionUrl() {
+      return `${this.repoLink}/branches/_new/${this.branchNameSubURL}`;
+    },
+    shouldCreateTag() {
+      return this.mode === 'tags';
+    },
+  },
+
+  watch: {
+    menuVisible(visible) {
+      if (visible) {
+        this.focusSearchField();
+        this.fetchBranchesOrTags();
+      }
+    },
+  },
+
+  beforeMount() {
+    if (this.viewType === 'tree') {
+      this.isViewTree = true;
+      this.refNameText = this.commitIdShort;
+    } else if (this.viewType === 'tag') {
+      this.isViewTag = true;
+      this.refNameText = this.tagName;
+    } else {
+      this.isViewBranch = true;
+      this.refNameText = this.branchName;
+    }
+
+    document.body.addEventListener('click', (event) => {
+      if (this.$el.contains(event.target)) return;
+      if (this.menuVisible) {
+        this.menuVisible = false;
+      }
+    });
+  },
+  methods: {
+    selectItem(item) {
+      const prev = this.getSelected();
+      if (prev !== null) {
+        prev.selected = false;
+      }
+      item.selected = true;
+      const url = (item.tag) ? this.tagURLPrefix + item.url + this.tagURLSuffix : this.branchURLPrefix + item.url + this.branchURLSuffix;
+      if (!this.branchForm) {
+        window.location.href = url;
+      } else {
+        this.isViewTree = false;
+        this.isViewTag = false;
+        this.isViewBranch = false;
+        this.$refs.dropdownRefName.textContent = item.name;
+        if (this.setAction) {
+          document.getElementById(this.branchForm)?.setAttribute('action', url);
+        } else {
+          $(`#${this.branchForm} input[name="refURL"]`).val(url);
+        }
+        $(`#${this.branchForm} input[name="ref"]`).val(item.name);
+        if (item.tag) {
+          this.isViewTag = true;
+          $(`#${this.branchForm} input[name="refType"]`).val('tag');
+        } else {
+          this.isViewBranch = true;
+          $(`#${this.branchForm} input[name="refType"]`).val('branch');
+        }
+        if (this.submitForm) {
+          $(`#${this.branchForm}`).trigger('submit');
+        }
+        this.menuVisible = false;
+      }
+    },
+    createNewBranch() {
+      if (!this.showCreateNewBranch) return;
+      $(this.$refs.newBranchForm).trigger('submit');
+    },
+    focusSearchField() {
+      nextTick(() => {
+        this.$refs.searchField.focus();
+      });
+    },
+    getSelected() {
+      for (let i = 0, j = this.items.length; i < j; ++i) {
+        if (this.items[i].selected) return this.items[i];
+      }
+      return null;
+    },
+    getSelectedIndexInFiltered() {
+      for (let i = 0, j = this.filteredItems.length; i < j; ++i) {
+        if (this.filteredItems[i].selected) return i;
+      }
+      return -1;
+    },
+    scrollToActive() {
+      let el = this.$refs[`listItem${this.active}`]; // eslint-disable-line no-jquery/variable-pattern
+      if (!el || !el.length) return;
+      if (Array.isArray(el)) {
+        el = el[0];
+      }
+
+      const cont = this.$refs.scrollContainer;
+      if (el.offsetTop < cont.scrollTop) {
+        cont.scrollTop = el.offsetTop;
+      } else if (el.offsetTop + el.clientHeight > cont.scrollTop + cont.clientHeight) {
+        cont.scrollTop = el.offsetTop + el.clientHeight - cont.clientHeight;
+      }
+    },
+    keydown(event) {
+      if (event.keyCode === 40) { // arrow down
+        event.preventDefault();
+
+        if (this.active === -1) {
+          this.active = this.getSelectedIndexInFiltered();
+        }
+
+        if (this.active + (this.showCreateNewBranch ? 0 : 1) >= this.filteredItems.length) {
+          return;
+        }
+        this.active++;
+        this.scrollToActive();
+      } else if (event.keyCode === 38) { // arrow up
+        event.preventDefault();
+
+        if (this.active === -1) {
+          this.active = this.getSelectedIndexInFiltered();
+        }
+
+        if (this.active <= 0) {
+          return;
+        }
+        this.active--;
+        this.scrollToActive();
+      } else if (event.keyCode === 13) { // enter
+        event.preventDefault();
+
+        if (this.active >= this.filteredItems.length) {
+          this.createNewBranch();
+        } else if (this.active >= 0) {
+          this.selectItem(this.filteredItems[this.active]);
+        }
+      } else if (event.keyCode === 27) { // escape
+        event.preventDefault();
+        this.menuVisible = false;
+      }
+    },
+    handleTabSwitch(mode) {
+      if (this.isLoading) return;
+      this.mode = mode;
+      this.focusSearchField();
+      this.fetchBranchesOrTags();
+    },
+    async fetchBranchesOrTags() {
+      if (!['branches', 'tags'].includes(this.mode) || this.isLoading) return;
+      // only fetch when branch/tag list has not been initialized
+      if (this.hasListInitialized[this.mode] ||
+        (this.mode === 'branches' && !this.showBranchesInDropdown) ||
+        (this.mode === 'tags' && this.noTag)
+      ) {
+        return;
+      }
+      this.isLoading = true;
+      try {
+        const resp = await GET(`${this.repoLink}/${this.mode}/list`);
+        const {results} = await resp.json();
+        for (const result of results) {
+          let selected = false;
+          if (this.mode === 'branches') {
+            selected = result === this.defaultSelectedRefName;
+          } else {
+            selected = result === (this.release ? this.release.tagName : this.defaultSelectedRefName);
+          }
+          this.items.push({name: result, url: pathEscapeSegments(result), branch: this.mode === 'branches', tag: this.mode === 'tags', selected});
+        }
+        this.hasListInitialized[this.mode] = true;
+      } catch (e) {
+        showErrorToast(`Network error when fetching ${this.mode}, error: ${e}`);
+      } finally {
+        this.isLoading = false;
+      }
+    },
+  },
+};
+
+export function initRepoBranchTagSelector(selector) {
+  for (const [elIndex, elRoot] of document.querySelectorAll(selector).entries()) {
+    const data = {
+      csrfToken: window.config.csrfToken,
+      items: [],
+      searchTerm: '',
+      refNameText: '',
+      menuVisible: false,
+      release: null,
+
+      isViewTag: false,
+      isViewBranch: false,
+      isViewTree: false,
+
+      active: 0,
+      isLoading: false,
+      // This means whether branch list/tag list has initialized
+      hasListInitialized: {
+        'branches': false,
+        'tags': false,
+      },
+      ...window.config.pageData.branchDropdownDataList[elIndex],
+    };
+
+    const comp = {...sfc, data() { return data }};
+    createApp(comp).mount(elRoot);
+  }
+}
+
+export default sfc; // activate IDE's Vue plugin
+</script>
+<template>
+  <div class="ui dropdown custom">
+    <button class="branch-dropdown-button gt-ellipsis ui basic small compact button tw-flex tw-m-0" @click="menuVisible = !menuVisible" @keyup.enter="menuVisible = !menuVisible">
+      <span class="text tw-flex tw-items-center tw-mr-1 gt-ellipsis">
+        <template v-if="release">{{ textReleaseCompare }}</template>
+        <template v-else>
+          <svg-icon v-if="isViewTag" name="octicon-tag"/>
+          <svg-icon v-else name="octicon-git-branch"/>
+          <strong ref="dropdownRefName" class="tw-ml-2 tw-inline-block gt-ellipsis">{{ refNameText }}</strong>
+        </template>
+      </span>
+      <svg-icon name="octicon-triangle-down" :size="14" class-name="dropdown icon"/>
+    </button>
+    <div class="menu transition" :class="{visible: menuVisible}" v-show="menuVisible" v-cloak>
+      <div class="ui icon search input">
+        <i class="icon"><svg-icon name="octicon-filter" :size="16"/></i>
+        <input name="search" ref="searchField" autocomplete="off" v-model="searchTerm" @keydown="keydown($event)" :placeholder="searchFieldPlaceholder">
+      </div>
+      <div v-if="showBranchesInDropdown" class="branch-tag-tab">
+        <a class="branch-tag-item muted" :class="{active: mode === 'branches'}" href="#" @click="handleTabSwitch('branches')">
+          <svg-icon name="octicon-git-branch" :size="16" class-name="tw-mr-1"/>{{ textBranches }}
+        </a>
+        <a v-if="!noTag" class="branch-tag-item muted" :class="{active: mode === 'tags'}" href="#" @click="handleTabSwitch('tags')">
+          <svg-icon name="octicon-tag" :size="16" class-name="tw-mr-1"/>{{ textTags }}
+        </a>
+      </div>
+      <div class="branch-tag-divider"/>
+      <div class="scrolling menu" ref="scrollContainer">
+        <svg-icon name="octicon-rss" symbol-id="svg-symbol-octicon-rss"/>
+        <div class="loading-indicator is-loading" v-if="isLoading"/>
+        <div v-for="(item, index) in filteredItems" :key="item.name" class="item" :class="{selected: item.selected, active: active === index}" @click="selectItem(item)" :ref="'listItem' + index">
+          {{ item.name }}
+          <div class="ui label" v-if="item.name===repoDefaultBranch && mode === 'branches'">
+            {{ textDefaultBranchLabel }}
+          </div>
+          <a v-show="enableFeed && mode === 'branches'" role="button" class="rss-icon tw-float-right" :href="rssURLPrefix + item.url" target="_blank" @click.stop>
+            <!-- creating a lot of Vue component is pretty slow, so we use a static SVG here -->
+            <svg width="14" height="14" class="svg octicon-rss"><use href="#svg-symbol-octicon-rss"/></svg>
+          </a>
+        </div>
+        <div class="item" v-if="showCreateNewBranch" :class="{active: active === filteredItems.length}" :ref="'listItem' + filteredItems.length">
+          <a href="#" @click="createNewBranch()">
+            <div v-show="shouldCreateTag">
+              <i class="reference tags icon"/>
+              <span v-text="textCreateTag.replace('%s', searchTerm)"/>
+            </div>
+            <div v-show="!shouldCreateTag">
+              <svg-icon name="octicon-git-branch"/>
+              <span v-text="textCreateBranch.replace('%s', searchTerm)"/>
+            </div>
+            <div class="text small">
+              <span v-if="isViewBranch || release">{{ textCreateBranchFrom.replace('%s', branchName) }}</span>
+              <span v-else-if="isViewTag">{{ textCreateBranchFrom.replace('%s', tagName) }}</span>
+              <span v-else>{{ textCreateBranchFrom.replace('%s', commitIdShort) }}</span>
+            </div>
+          </a>
+          <form ref="newBranchForm" :action="formActionUrl" method="post">
+            <input type="hidden" name="_csrf" :value="csrfToken">
+            <input type="hidden" name="new_branch_name" v-model="searchTerm">
+            <input type="hidden" name="create_tag" v-model="shouldCreateTag">
+            <input type="hidden" name="current_path" v-model="treePath" v-if="treePath">
+          </form>
+        </div>
+      </div>
+      <div class="message" v-if="showNoResults && !isLoading">
+        {{ noResults }}
+      </div>
+    </div>
+  </div>
+</template>
+<style scoped>
+.branch-tag-tab {
+  padding: 0 10px;
+}
+
+.branch-tag-item {
+  display: inline-block;
+  padding: 10px;
+  border: 1px solid transparent;
+  border-bottom: none;
+}
+
+.branch-tag-item.active {
+  border-color: var(--color-secondary);
+  background: var(--color-menu);
+  border-top-left-radius: var(--border-radius);
+  border-top-right-radius: var(--border-radius);
+}
+
+.branch-tag-divider {
+  margin-top: -1px !important;
+  border-top: 1px solid var(--color-secondary);
+}
+
+.scrolling.menu {
+  border-top: none !important;
+}
+
+.menu .item .rss-icon {
+  display: none; /* only show RSS icon on hover */
+}
+
+.menu .item:hover .rss-icon {
+  display: inline-block;
+}
+
+.scrolling.menu .loading-indicator {
+  height: 4em;
+}
+</style>
diff --git a/web_src/js/components/RepoCodeFrequency.vue b/web_src/js/components/RepoCodeFrequency.vue
new file mode 100644
index 00000000..1d40d6d4
--- /dev/null
+++ b/web_src/js/components/RepoCodeFrequency.vue
@@ -0,0 +1,172 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {
+  Chart,
+  Legend,
+  LinearScale,
+  TimeScale,
+  PointElement,
+  LineElement,
+  Filler,
+} from 'chart.js';
+import {GET} from '../modules/fetch.js';
+import {Line as ChartLine} from 'vue-chartjs';
+import {
+  startDaysBetween,
+  firstStartDateAfterDate,
+  fillEmptyStartDaysWithZeroes,
+} from '../utils/time.js';
+import {chartJsColors} from '../utils/color.js';
+import {sleep} from '../utils.js';
+import 'chartjs-adapter-dayjs-4/dist/chartjs-adapter-dayjs-4.esm';
+
+const {pageData} = window.config;
+
+Chart.defaults.color = chartJsColors.text;
+Chart.defaults.borderColor = chartJsColors.border;
+
+Chart.register(
+  TimeScale,
+  LinearScale,
+  Legend,
+  PointElement,
+  LineElement,
+  Filler,
+);
+
+export default {
+  components: {ChartLine, SvgIcon},
+  props: {
+    locale: {
+      type: Object,
+      required: true,
+    },
+  },
+  data: () => ({
+    isLoading: false,
+    errorText: '',
+    repoLink: pageData.repoLink || [],
+    data: [],
+  }),
+  mounted() {
+    this.fetchGraphData();
+  },
+  methods: {
+    async fetchGraphData() {
+      this.isLoading = true;
+      try {
+        let response;
+        do {
+          response = await GET(`${this.repoLink}/activity/code-frequency/data`);
+          if (response.status === 202) {
+            await sleep(1000); // wait for 1 second before retrying
+          }
+        } while (response.status === 202);
+        if (response.ok) {
+          this.data = await response.json();
+          const weekValues = Object.values(this.data);
+          const start = weekValues[0].week;
+          const end = firstStartDateAfterDate(new Date());
+          const startDays = startDaysBetween(start, end);
+          this.data = fillEmptyStartDaysWithZeroes(startDays, this.data);
+          this.errorText = '';
+        } else {
+          this.errorText = response.statusText;
+        }
+      } catch (err) {
+        this.errorText = err.message;
+      } finally {
+        this.isLoading = false;
+      }
+    },
+
+    toGraphData(data) {
+      return {
+        datasets: [
+          {
+            data: data.map((i) => ({x: i.week, y: i.additions})),
+            pointRadius: 0,
+            pointHitRadius: 0,
+            fill: true,
+            label: 'Additions',
+            backgroundColor: chartJsColors['additions'],
+            borderWidth: 0,
+            tension: 0.3,
+          },
+          {
+            data: data.map((i) => ({x: i.week, y: -i.deletions})),
+            pointRadius: 0,
+            pointHitRadius: 0,
+            fill: true,
+            label: 'Deletions',
+            backgroundColor: chartJsColors['deletions'],
+            borderWidth: 0,
+            tension: 0.3,
+          },
+        ],
+      };
+    },
+
+    getOptions() {
+      return {
+        responsive: true,
+        maintainAspectRatio: false,
+        animation: true,
+        plugins: {
+          legend: {
+            display: true,
+          },
+        },
+        scales: {
+          x: {
+            type: 'time',
+            grid: {
+              display: false,
+            },
+            time: {
+              minUnit: 'month',
+            },
+            ticks: {
+              maxRotation: 0,
+              maxTicksLimit: 12,
+            },
+          },
+          y: {
+            ticks: {
+              maxTicksLimit: 6,
+            },
+          },
+        },
+      };
+    },
+  },
+};
+</script>
+<template>
+  <div>
+    <div class="ui header tw-flex tw-items-center tw-justify-between">
+      {{ isLoading ? locale.loadingTitle : errorText ? locale.loadingTitleFailed: `Code frequency over the history of ${repoLink.slice(1)}` }}
+    </div>
+    <div class="tw-flex ui segment main-graph">
+      <div v-if="isLoading || errorText !== ''" class="gt-tc tw-m-auto">
+        <div v-if="isLoading">
+          <SvgIcon name="octicon-sync" class="tw-mr-2 job-status-rotate"/>
+          {{ locale.loadingInfo }}
+        </div>
+        <div v-else class="text red">
+          <SvgIcon name="octicon-x-circle-fill"/>
+          {{ errorText }}
+        </div>
+      </div>
+      <ChartLine
+        v-memo="data" v-if="data.length !== 0"
+        :data="toGraphData(data)" :options="getOptions()"
+      />
+    </div>
+  </div>
+</template>
+<style scoped>
+.main-graph {
+  height: 440px;
+}
+</style>
diff --git a/web_src/js/components/RepoContributors.vue b/web_src/js/components/RepoContributors.vue
new file mode 100644
index 00000000..dec2599c
--- /dev/null
+++ b/web_src/js/components/RepoContributors.vue
@@ -0,0 +1,431 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {
+  Chart,
+  Title,
+  BarElement,
+  LinearScale,
+  TimeScale,
+  PointElement,
+  LineElement,
+  Filler,
+} from 'chart.js';
+import {GET} from '../modules/fetch.js';
+import zoomPlugin from 'chartjs-plugin-zoom';
+import {Line as ChartLine} from 'vue-chartjs';
+import {
+  startDaysBetween,
+  firstStartDateAfterDate,
+  fillEmptyStartDaysWithZeroes,
+} from '../utils/time.js';
+import {chartJsColors} from '../utils/color.js';
+import {sleep} from '../utils.js';
+import 'chartjs-adapter-dayjs-4/dist/chartjs-adapter-dayjs-4.esm';
+import $ from 'jquery';
+
+const customEventListener = {
+  id: 'customEventListener',
+  afterEvent: (chart, args, opts) => {
+    // event will be replayed from chart.update when reset zoom,
+    // so we need to check whether args.replay is true to avoid call loops
+    if (args.event.type === 'dblclick' && opts.chartType === 'main' && !args.replay) {
+      chart.resetZoom();
+      opts.instance.updateOtherCharts(args.event, true);
+    }
+  },
+};
+
+Chart.defaults.color = chartJsColors.text;
+Chart.defaults.borderColor = chartJsColors.border;
+
+Chart.register(
+  TimeScale,
+  LinearScale,
+  BarElement,
+  Title,
+  PointElement,
+  LineElement,
+  Filler,
+  zoomPlugin,
+  customEventListener,
+);
+
+export default {
+  components: {ChartLine, SvgIcon},
+  props: {
+    locale: {
+      type: Object,
+      required: true,
+    },
+    repoLink: {
+      type: String,
+      required: true,
+    },
+  },
+  data: () => ({
+    isLoading: false,
+    errorText: '',
+    totalStats: {},
+    sortedContributors: {},
+    type: 'commits',
+    contributorsStats: [],
+    xAxisStart: null,
+    xAxisEnd: null,
+    xAxisMin: null,
+    xAxisMax: null,
+  }),
+  mounted() {
+    this.fetchGraphData();
+
+    $('#repo-contributors').dropdown({
+      onChange: (val) => {
+        this.xAxisMin = this.xAxisStart;
+        this.xAxisMax = this.xAxisEnd;
+        this.type = val;
+        this.sortContributors();
+      },
+    });
+  },
+  methods: {
+    sortContributors() {
+      const contributors = this.filterContributorWeeksByDateRange();
+      const criteria = `total_${this.type}`;
+      this.sortedContributors = Object.values(contributors)
+        .filter((contributor) => contributor[criteria] !== 0)
+        .sort((a, b) => a[criteria] > b[criteria] ? -1 : a[criteria] === b[criteria] ? 0 : 1)
+        .slice(0, 100);
+    },
+
+    async fetchGraphData() {
+      this.isLoading = true;
+      try {
+        let response;
+        do {
+          response = await GET(`${this.repoLink}/activity/contributors/data`);
+          if (response.status === 202) {
+            await sleep(1000); // wait for 1 second before retrying
+          }
+        } while (response.status === 202);
+        if (response.ok) {
+          const data = await response.json();
+          const {total, ...rest} = data;
+          // below line might be deleted if we are sure go produces map always sorted by keys
+          total.weeks = Object.fromEntries(Object.entries(total.weeks).sort());
+
+          const weekValues = Object.values(total.weeks);
+          this.xAxisStart = weekValues[0].week;
+          this.xAxisEnd = firstStartDateAfterDate(new Date());
+          const startDays = startDaysBetween(this.xAxisStart, this.xAxisEnd);
+          total.weeks = fillEmptyStartDaysWithZeroes(startDays, total.weeks);
+          this.xAxisMin = this.xAxisStart;
+          this.xAxisMax = this.xAxisEnd;
+          this.contributorsStats = {};
+          for (const [email, user] of Object.entries(rest)) {
+            user.weeks = fillEmptyStartDaysWithZeroes(startDays, user.weeks);
+            this.contributorsStats[email] = user;
+          }
+          this.sortContributors();
+          this.totalStats = total;
+          this.errorText = '';
+        } else {
+          this.errorText = response.statusText;
+        }
+      } catch (err) {
+        this.errorText = err.message;
+      } finally {
+        this.isLoading = false;
+      }
+    },
+
+    filterContributorWeeksByDateRange() {
+      const filteredData = {};
+      const data = this.contributorsStats;
+      for (const key of Object.keys(data)) {
+        const user = data[key];
+        user.total_commits = 0;
+        user.total_additions = 0;
+        user.total_deletions = 0;
+        user.max_contribution_type = 0;
+        const filteredWeeks = user.weeks.filter((week) => {
+          const oneWeek = 7 * 24 * 60 * 60 * 1000;
+          if (week.week >= this.xAxisMin - oneWeek && week.week <= this.xAxisMax + oneWeek) {
+            user.total_commits += week.commits;
+            user.total_additions += week.additions;
+            user.total_deletions += week.deletions;
+            if (week[this.type] > user.max_contribution_type) {
+              user.max_contribution_type = week[this.type];
+            }
+            return true;
+          }
+          return false;
+        });
+        // this line is required. See https://github.com/sahinakkaya/gitea/pull/3#discussion_r1396495722
+        // for details.
+        user.max_contribution_type += 1;
+
+        filteredData[key] = {...user, weeks: filteredWeeks};
+      }
+
+      return filteredData;
+    },
+
+    maxMainGraph() {
+      // This method calculates maximum value for Y value of the main graph. If the number
+      // of maximum contributions for selected contribution type is 15.955 it is probably
+      // better to round it up to 20.000.This method is responsible for doing that.
+      // Normally, chartjs handles this automatically, but it will resize the graph when you
+      // zoom, pan etc. I think resizing the graph makes it harder to compare things visually.
+      const maxValue = Math.max(
+        ...this.totalStats.weeks.map((o) => o[this.type]),
+      );
+      const [coefficient, exp] = maxValue.toExponential().split('e').map(Number);
+      if (coefficient % 1 === 0) return maxValue;
+      return (1 - (coefficient % 1)) * 10 ** exp + maxValue;
+    },
+
+    maxContributorGraph() {
+      // Similar to maxMainGraph method this method calculates maximum value for Y value
+      // for contributors' graph. If I let chartjs do this for me, it will choose different
+      // maxY value for each contributors' graph which again makes it harder to compare.
+      const maxValue = Math.max(
+        ...this.sortedContributors.map((c) => c.max_contribution_type),
+      );
+      const [coefficient, exp] = maxValue.toExponential().split('e').map(Number);
+      if (coefficient % 1 === 0) return maxValue;
+      return (1 - (coefficient % 1)) * 10 ** exp + maxValue;
+    },
+
+    toGraphData(data) {
+      return {
+        datasets: [
+          {
+            data: data.map((i) => ({x: i.week, y: i[this.type]})),
+            pointRadius: 0,
+            pointHitRadius: 0,
+            fill: 'start',
+            backgroundColor: chartJsColors[this.type],
+            borderWidth: 0,
+            tension: 0.3,
+          },
+        ],
+      };
+    },
+
+    updateOtherCharts(event, reset) {
+      const minVal = event.chart.options.scales.x.min;
+      const maxVal = event.chart.options.scales.x.max;
+      if (reset) {
+        this.xAxisMin = this.xAxisStart;
+        this.xAxisMax = this.xAxisEnd;
+        this.sortContributors();
+      } else if (minVal) {
+        this.xAxisMin = minVal;
+        this.xAxisMax = maxVal;
+        this.sortContributors();
+      }
+    },
+
+    getOptions(type) {
+      return {
+        responsive: true,
+        maintainAspectRatio: false,
+        animation: false,
+        events: ['mousemove', 'mouseout', 'click', 'touchstart', 'touchmove', 'dblclick'],
+        plugins: {
+          title: {
+            display: type === 'main',
+            text: 'drag: zoom, shift+drag: pan, double click: reset zoom',
+            position: 'top',
+            align: 'center',
+          },
+          customEventListener: {
+            chartType: type,
+            instance: this,
+          },
+          zoom: {
+            pan: {
+              enabled: true,
+              modifierKey: 'shift',
+              mode: 'x',
+              threshold: 20,
+              onPanComplete: this.updateOtherCharts,
+            },
+            limits: {
+              x: {
+                // Check https://www.chartjs.org/chartjs-plugin-zoom/latest/guide/options.html#scale-limits
+                // to know what each option means
+                min: 'original',
+                max: 'original',
+
+                // number of milliseconds in 2 weeks. Minimum x range will be 2 weeks when you zoom on the graph
+                minRange: 2 * 7 * 24 * 60 * 60 * 1000,
+              },
+            },
+            zoom: {
+              drag: {
+                enabled: type === 'main',
+              },
+              pinch: {
+                enabled: type === 'main',
+              },
+              mode: 'x',
+              onZoomComplete: this.updateOtherCharts,
+            },
+          },
+        },
+        scales: {
+          x: {
+            min: this.xAxisMin,
+            max: this.xAxisMax,
+            type: 'time',
+            grid: {
+              display: false,
+            },
+            time: {
+              minUnit: 'month',
+            },
+            ticks: {
+              maxRotation: 0,
+              maxTicksLimit: type === 'main' ? 12 : 6,
+            },
+          },
+          y: {
+            min: 0,
+            max: type === 'main' ? this.maxMainGraph() : this.maxContributorGraph(),
+            ticks: {
+              maxTicksLimit: type === 'main' ? 6 : 4,
+            },
+          },
+        },
+      };
+    },
+  },
+};
+</script>
+<template>
+  <div>
+    <div class="ui header tw-flex tw-items-center tw-justify-between">
+      <div>
+        <relative-time
+          v-if="xAxisMin > 0"
+          format="datetime"
+          year="numeric"
+          month="short"
+          day="numeric"
+          weekday=""
+          :datetime="new Date(xAxisMin)"
+        >
+          {{ new Date(xAxisMin) }}
+        </relative-time>
+        {{ isLoading ? locale.loadingTitle : errorText ? locale.loadingTitleFailed: "-" }}
+        <relative-time
+          v-if="xAxisMax > 0"
+          format="datetime"
+          year="numeric"
+          month="short"
+          day="numeric"
+          weekday=""
+          :datetime="new Date(xAxisMax)"
+        >
+          {{ new Date(xAxisMax) }}
+        </relative-time>
+      </div>
+      <div>
+        <!-- Contribution type -->
+        <div class="ui dropdown jump" id="repo-contributors">
+          <div class="ui basic compact button">
+            <span class="not-mobile">{{ locale.filterLabel }}</span> <strong>{{ locale.contributionType[type] }}</strong>
+            <svg-icon name="octicon-triangle-down" :size="14"/>
+          </div>
+          <div class="menu">
+            <div :class="['item', {'selected': type === 'commits'}]" data-value="commits">
+              {{ locale.contributionType.commits }}
+            </div>
+            <div :class="['item', {'selected': type === 'additions'}]" data-value="additions">
+              {{ locale.contributionType.additions }}
+            </div>
+            <div :class="['item', {'selected': type === 'deletions'}]" data-value="deletions">
+              {{ locale.contributionType.deletions }}
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+    <div class="tw-flex ui segment main-graph">
+      <div v-if="isLoading || errorText !== ''" class="gt-tc tw-m-auto">
+        <div v-if="isLoading">
+          <SvgIcon name="octicon-sync" class="tw-mr-2 job-status-rotate"/>
+          {{ locale.loadingInfo }}
+        </div>
+        <div v-else class="text red">
+          <SvgIcon name="octicon-x-circle-fill"/>
+          {{ errorText }}
+        </div>
+      </div>
+      <ChartLine
+        v-memo="[totalStats.weeks, type]" v-if="Object.keys(totalStats).length !== 0"
+        :data="toGraphData(totalStats.weeks)" :options="getOptions('main')"
+      />
+    </div>
+    <div class="contributor-grid">
+      <div
+        v-for="(contributor, index) in sortedContributors"
+        :key="index"
+        v-memo="[sortedContributors, type]"
+      >
+        <div class="ui top attached header tw-flex tw-flex-1">
+          <b class="ui right">#{{ index + 1 }}</b>
+          <a :href="contributor.home_link">
+            <img class="ui avatar tw-align-middle" height="40" width="40" :src="contributor.avatar_link">
+          </a>
+          <div class="tw-ml-2">
+            <a v-if="contributor.home_link !== ''" :href="contributor.home_link"><h4>{{ contributor.name }}</h4></a>
+            <h4 v-else class="contributor-name">
+              {{ contributor.name }}
+            </h4>
+            <p class="tw-text-12 tw-flex tw-gap-1">
+              <strong v-if="contributor.total_commits">{{ contributor.total_commits.toLocaleString() }} {{ locale.contributionType.commits }}</strong>
+              <strong v-if="contributor.total_additions" class="text green">{{ contributor.total_additions.toLocaleString() }}++ </strong>
+              <strong v-if="contributor.total_deletions" class="text red">
+                {{ contributor.total_deletions.toLocaleString() }}--</strong>
+            </p>
+          </div>
+        </div>
+        <div class="ui attached segment">
+          <div>
+            <ChartLine
+              :data="toGraphData(contributor.weeks)"
+              :options="getOptions('contributor')"
+            />
+          </div>
+        </div>
+      </div>
+    </div>
+  </div>
+</template>
+<style scoped>
+.main-graph {
+  height: 260px;
+  padding-top: 2px;
+}
+
+.contributor-grid {
+  display: grid;
+  grid-template-columns: repeat(2, 1fr);
+  gap: 1rem;
+}
+
+.contributor-grid > * {
+  min-width: 0;
+}
+
+@media (max-width: 991.98px) {
+  .contributor-grid {
+    grid-template-columns: repeat(1, 1fr);
+  }
+}
+
+.contributor-name {
+  margin-bottom: 0;
+}
+</style>
diff --git a/web_src/js/components/RepoRecentCommits.vue b/web_src/js/components/RepoRecentCommits.vue
new file mode 100644
index 00000000..8759978e
--- /dev/null
+++ b/web_src/js/components/RepoRecentCommits.vue
@@ -0,0 +1,149 @@
+<script>
+import {SvgIcon} from '../svg.js';
+import {
+  Chart,
+  Tooltip,
+  BarElement,
+  LinearScale,
+  TimeScale,
+} from 'chart.js';
+import {GET} from '../modules/fetch.js';
+import {Bar} from 'vue-chartjs';
+import {
+  startDaysBetween,
+  firstStartDateAfterDate,
+  fillEmptyStartDaysWithZeroes,
+} from '../utils/time.js';
+import {chartJsColors} from '../utils/color.js';
+import {sleep} from '../utils.js';
+import 'chartjs-adapter-dayjs-4/dist/chartjs-adapter-dayjs-4.esm';
+
+const {pageData} = window.config;
+
+Chart.defaults.color = chartJsColors.text;
+Chart.defaults.borderColor = chartJsColors.border;
+
+Chart.register(
+  TimeScale,
+  LinearScale,
+  BarElement,
+  Tooltip,
+);
+
+export default {
+  components: {Bar, SvgIcon},
+  props: {
+    locale: {
+      type: Object,
+      required: true,
+    },
+  },
+  data: () => ({
+    isLoading: false,
+    errorText: '',
+    repoLink: pageData.repoLink || [],
+    data: [],
+  }),
+  mounted() {
+    this.fetchGraphData();
+  },
+  methods: {
+    async fetchGraphData() {
+      this.isLoading = true;
+      try {
+        let response;
+        do {
+          response = await GET(`${this.repoLink}/activity/recent-commits/data`);
+          if (response.status === 202) {
+            await sleep(1000); // wait for 1 second before retrying
+          }
+        } while (response.status === 202);
+        if (response.ok) {
+          const data = await response.json();
+          const start = Object.values(data)[0].week;
+          const end = firstStartDateAfterDate(new Date());
+          const startDays = startDaysBetween(start, end);
+          this.data = fillEmptyStartDaysWithZeroes(startDays, data).slice(-52);
+          this.errorText = '';
+        } else {
+          this.errorText = response.statusText;
+        }
+      } catch (err) {
+        this.errorText = err.message;
+      } finally {
+        this.isLoading = false;
+      }
+    },
+
+    toGraphData(data) {
+      return {
+        datasets: [
+          {
+            data: data.map((i) => ({x: i.week, y: i.commits})),
+            label: 'Commits',
+            backgroundColor: chartJsColors['commits'],
+            borderWidth: 0,
+            tension: 0.3,
+          },
+        ],
+      };
+    },
+
+    getOptions() {
+      return {
+        responsive: true,
+        maintainAspectRatio: false,
+        animation: true,
+        scales: {
+          x: {
+            type: 'time',
+            grid: {
+              display: false,
+            },
+            time: {
+              minUnit: 'week',
+            },
+            ticks: {
+              maxRotation: 0,
+              maxTicksLimit: 52,
+            },
+          },
+          y: {
+            ticks: {
+              maxTicksLimit: 6,
+            },
+          },
+        },
+      };
+    },
+  },
+};
+</script>
+<template>
+  <div>
+    <div class="ui header tw-flex tw-items-center tw-justify-between">
+      {{ isLoading ? locale.loadingTitle : errorText ? locale.loadingTitleFailed: "Number of commits in the past year" }}
+    </div>
+    <div class="tw-flex ui segment main-graph">
+      <div v-if="isLoading || errorText !== ''" class="gt-tc tw-m-auto">
+        <div v-if="isLoading">
+          <SvgIcon name="octicon-sync" class="tw-mr-2 job-status-rotate"/>
+          {{ locale.loadingInfo }}
+        </div>
+        <div v-else class="text red">
+          <SvgIcon name="octicon-x-circle-fill"/>
+          {{ errorText }}
+        </div>
+      </div>
+      <Bar
+        v-memo="data" v-if="data.length !== 0"
+        :data="toGraphData(data)" :options="getOptions()"
+      />
+    </div>
+  </div>
+</template>
+<style scoped>
+.main-graph {
+  height: 250px;
+}
+</style>
diff --git a/web_src/js/components/ScopedAccessTokenSelector.vue b/web_src/js/components/ScopedAccessTokenSelector.vue
new file mode 100644
index 00000000..925e531c
--- /dev/null
+++ b/web_src/js/components/ScopedAccessTokenSelector.vue
@@ -0,0 +1,115 @@
+<script>
+import {createApp} from 'vue';
+import {hideElem, showElem} from '../utils/dom.js';
+
+const sfc = {
+  props: {
+    isAdmin: {
+      type: Boolean,
+      required: true,
+    },
+    noAccessLabel: {
+      type: String,
+      required: true,
+    },
+    readLabel: {
+      type: String,
+      required: true,
+    },
+    writeLabel: {
+      type: String,
+      required: true,
+    },
+  },
+
+  computed: {
+    categories() {
+      const categories = [
+        'activitypub',
+      ];
+      if (this.isAdmin) {
+        categories.push('admin');
+      }
+      categories.push(
+        'issue',
+        'misc',
+        'notification',
+        'organization',
+        'package',
+        'repository',
+        'user');
+      return categories;
+    },
+  },
+
+  mounted() {
+    document.getElementById('scoped-access-submit').addEventListener('click', this.onClickSubmit);
+  },
+
+  unmounted() {
+    document.getElementById('scoped-access-submit').removeEventListener('click', this.onClickSubmit);
+  },
+
+  methods: {
+    onClickSubmit(e) {
+      e.preventDefault();
+
+      const warningEl = document.getElementById('scoped-access-warning');
+      // check that at least one scope has been selected
+      for (const el of document.getElementsByClassName('access-token-select')) {
+        if (el.value) {
+          // Hide the error if it was visible from previous attempt.
+          hideElem(warningEl);
+          // Submit the form.
+          document.getElementById('scoped-access-form').submit();
+          // Don't show the warning.
+          return;
+        }
+      }
+      // no scopes selected, show validation error
+      showElem(warningEl);
+    },
+  },
+};
+
+export default sfc;
+
+/**
+ * Initialize category toggle sections
+ */
+export function initScopedAccessTokenCategories() {
+  for (const el of document.getElementsByClassName('scoped-access-token')) {
+    createApp(sfc, {
+      isAdmin: el.getAttribute('data-is-admin') === 'true',
+      noAccessLabel: el.getAttribute('data-no-access-label'),
+      readLabel: el.getAttribute('data-read-label'),
+      writeLabel: el.getAttribute('data-write-label'),
+    }).mount(el);
+  }
+}
+
+</script>
+<template>
+  <div v-for="category in categories" :key="category" class="field tw-pl-1 tw-pb-1 access-token-category">
+    <label class="category-label" :for="'access-token-scope-' + category">
+      {{ category }}
+    </label>
+    <div class="gitea-select">
+      <select
+        class="ui selection access-token-select"
+        name="scope"
+        :id="'access-token-scope-' + category"
+      >
+        <option value="">
+          {{ noAccessLabel }}
+        </option>
+        <option :value="'read:' + category">
+          {{ readLabel }}
+        </option>
+        <option :value="'write:' + category">
+          {{ writeLabel }}
+        </option>
+      </select>
+    </div>
+  </div>
+</template>
diff --git a/web_src/js/features/admin/common.js b/web_src/js/features/admin/common.js
new file mode 100644
index 00000000..1a5bd6e4
--- /dev/null
+++ b/web_src/js/features/admin/common.js
@@ -0,0 +1,258 @@
+import $ from 'jquery';
+import {checkAppUrl} from '../common-global.js';
+import {hideElem, showElem, toggleElem} from '../../utils/dom.js';
+import {POST} from '../../modules/fetch.js';
+
+const {appSubUrl} = window.config;
+
+function onSecurityProtocolChange() {
+  if (Number(document.getElementById('security_protocol')?.value) > 0) {
+    showElem('.has-tls');
+  } else {
+    hideElem('.has-tls');
+  }
+}
+
+export function initAdminCommon() {
+  if (!document.querySelector('.page-content.admin')) return;
+
+  // check whether appUrl(ROOT_URL) is correct, if not, show an error message
+  checkAppUrl();
+
+  // New user
+  if ($('.admin.new.user').length > 0 || $('.admin.edit.user').length > 0) {
+    document.getElementById('login_type')?.addEventListener('change', function () {
+      if (this.value?.substring(0, 1) === '0') {
+        document.getElementById('user_name')?.removeAttribute('disabled');
+        document.getElementById('login_name')?.removeAttribute('required');
+        hideElem('.non-local');
+        showElem('.local');
+        document.getElementById('user_name')?.focus();
+
+        if (this.getAttribute('data-password') === 'required') {
+          document.getElementById('password')?.setAttribute('required', 'required');
+        }
+      } else {
+        if (document.querySelector('.admin.edit.user')) {
+          document.getElementById('user_name')?.setAttribute('disabled', 'disabled');
+        }
+        document.getElementById('login_name')?.setAttribute('required', 'required');
+        showElem('.non-local');
+        hideElem('.local');
+        document.getElementById('login_name')?.focus();
+
+        document.getElementById('password')?.removeAttribute('required');
+      }
+    });
+  }
+
+  function onUsePagedSearchChange() {
+    const searchPageSizeElements = document.querySelectorAll('.search-page-size');
+    if (document.getElementById('use_paged_search').checked) {
+      showElem('.search-page-size');
+      for (const el of searchPageSizeElements) {
+        el.querySelector('input')?.setAttribute('required', 'required');
+      }
+    } else {
+      hideElem('.search-page-size');
+      for (const el of searchPageSizeElements) {
+        el.querySelector('input')?.removeAttribute('required');
+      }
+    }
+  }
+
+  function onOAuth2Change(applyDefaultValues) {
+    hideElem('.open_id_connect_auto_discovery_url, .oauth2_use_custom_url');
+    for (const input of document.querySelectorAll('.open_id_connect_auto_discovery_url input[required]')) {
+      input.removeAttribute('required');
+    }
+
+    const provider = document.getElementById('oauth2_provider')?.value;
+    switch (provider) {
+      case 'openidConnect':
+        for (const input of document.querySelectorAll('.open_id_connect_auto_discovery_url input')) {
+          input.setAttribute('required', 'required');
+        }
+        showElem('.open_id_connect_auto_discovery_url');
+        break;
+      default: {
+        const customURLSettings = document.getElementById(`${provider}_customURLSettings`);
+        if (!customURLSettings) break;
+        const customURLRequired = (customURLSettings.getAttribute('data-required') === 'true');
+        document.getElementById('oauth2_use_custom_url').checked = customURLRequired;
+        if (customURLRequired || customURLSettings.getAttribute('data-available') === 'true') {
+          showElem('.oauth2_use_custom_url');
+        }
+      }
+    }
+    onOAuth2UseCustomURLChange(applyDefaultValues);
+  }
+
+  function onOAuth2UseCustomURLChange(applyDefaultValues) {
+    const provider = document.getElementById('oauth2_provider')?.value;
+    hideElem('.oauth2_use_custom_url_field');
+    for (const input of document.querySelectorAll('.oauth2_use_custom_url_field input[required]')) {
+      input.removeAttribute('required');
+    }
+
+    if (document.getElementById('oauth2_use_custom_url')?.checked) {
+      for (const custom of ['token_url', 'auth_url', 'profile_url', 'email_url', 'tenant']) {
+        const customInput = document.getElementById(`${provider}_${custom}`);
+        if (!customInput) continue;
+        if (applyDefaultValues) {
+          document.getElementById(`oauth2_${custom}`).value = customInput.value;
+        }
+        if (customInput.getAttribute('data-available') === 'true') {
+          for (const input of document.querySelectorAll(`.oauth2_${custom} input`)) {
+            input.setAttribute('required', 'required');
+          }
+          showElem(`.oauth2_${custom}`);
+        }
+      }
+    }
+  }
+
+  function onEnableLdapGroupsChange() {
+    toggleElem(document.getElementById('ldap-group-options'), $('.js-ldap-group-toggle')[0].checked);
+  }
+
+  // New authentication
+  if (document.querySelector('.admin.new.authentication')) {
+    document.getElementById('auth_type')?.addEventListener('change', function () {
+      hideElem('.ldap, .dldap, .smtp, .pam, .oauth2, .has-tls, .search-page-size, .sspi');
+
+      for (const input of document.querySelectorAll('.ldap input[required], .binddnrequired input[required], .dldap input[required], .smtp input[required], .pam input[required], .oauth2 input[required], .has-tls input[required], .sspi input[required]')) {
+        input.removeAttribute('required');
+      }
+
+      document.querySelector('.binddnrequired')?.classList.remove('required');
+
+      const authType = this.value;
+      switch (authType) {
+        case '2': // LDAP
+          showElem('.ldap');
+          for (const input of document.querySelectorAll('.binddnrequired input, .ldap div.required:not(.dldap) input')) {
+            input.setAttribute('required', 'required');
+          }
+          document.querySelector('.binddnrequired')?.classList.add('required');
+          break;
+        case '3': // SMTP
+          showElem('.smtp');
+          showElem('.has-tls');
+          for (const input of document.querySelectorAll('.smtp div.required input, .has-tls')) {
+            input.setAttribute('required', 'required');
+          }
+          break;
+        case '4': // PAM
+          showElem('.pam');
+          for (const input of document.querySelectorAll('.pam input')) {
+            input.setAttribute('required', 'required');
+          }
+          break;
+        case '5': // LDAP
+          showElem('.dldap');
+          for (const input of document.querySelectorAll('.dldap div.required:not(.ldap) input')) {
+            input.setAttribute('required', 'required');
+          }
+          break;
+        case '6': // OAuth2
+          showElem('.oauth2');
+          for (const input of document.querySelectorAll('.oauth2 div.required:not(.oauth2_use_custom_url,.oauth2_use_custom_url_field,.open_id_connect_auto_discovery_url) input')) {
+            input.setAttribute('required', 'required');
+          }
+          onOAuth2Change(true);
+          break;
+        case '7': // SSPI
+          showElem('.sspi');
+          for (const input of document.querySelectorAll('.sspi div.required input')) {
+            input.setAttribute('required', 'required');
+          }
+          break;
+      }
+      if (authType === '2' || authType === '5') {
+        onSecurityProtocolChange();
+        onEnableLdapGroupsChange();
+      }
+      if (authType === '2') {
+        onUsePagedSearchChange();
+      }
+    });
+    $('#auth_type').trigger('change');
+    document.getElementById('security_protocol')?.addEventListener('change', onSecurityProtocolChange);
+    document.getElementById('use_paged_search')?.addEventListener('change', onUsePagedSearchChange);
+    document.getElementById('oauth2_provider')?.addEventListener('change', () => onOAuth2Change(true));
+    document.getElementById('oauth2_use_custom_url')?.addEventListener('change', () => onOAuth2UseCustomURLChange(true));
+    $('.js-ldap-group-toggle').on('change', onEnableLdapGroupsChange);
+  }
+  // Edit authentication
+  if (document.querySelector('.admin.edit.authentication')) {
+    const authType = document.getElementById('auth_type')?.value;
+    if (authType === '2' || authType === '5') {
+      document.getElementById('security_protocol')?.addEventListener('change', onSecurityProtocolChange);
+      $('.js-ldap-group-toggle').on('change', onEnableLdapGroupsChange);
+      onEnableLdapGroupsChange();
+      if (authType === '2') {
+        document.getElementById('use_paged_search')?.addEventListener('change', onUsePagedSearchChange);
+      }
+    } else if (authType === '6') {
+      document.getElementById('oauth2_provider')?.addEventListener('change', () => onOAuth2Change(true));
+      document.getElementById('oauth2_use_custom_url')?.addEventListener('change', () => onOAuth2UseCustomURLChange(false));
+      onOAuth2Change(false);
+    }
+  }
+
+  if (document.querySelector('.admin.authentication')) {
+    $('#auth_name').on('input', function () {
+      // appSubUrl is either empty or is a path that starts with `/` and doesn't have a trailing slash.
+      document.getElementById('oauth2-callback-url').textContent = `${window.location.origin}${appSubUrl}/user/oauth2/${encodeURIComponent(this.value)}/callback`;
+    }).trigger('input');
+  }
+
+  // Notice
+  if (document.querySelector('.admin.notice')) {
+    const detailModal = document.getElementById('detail-modal');
+
+    // Attach view detail modals
+    $('.view-detail').on('click', function () {
+      const description = this.closest('tr').querySelector('.notice-description').textContent;
+      detailModal.querySelector('.content pre').textContent = description;
+      $(detailModal).modal('show');
+      return false;
+    });
+
+    // Select actions
+    const checkboxes = document.querySelectorAll('.select.table .ui.checkbox input');
+
+    $('.select.action').on('click', function () {
+      switch ($(this).data('action')) {
+        case 'select-all':
+          for (const checkbox of checkboxes) {
+            checkbox.checked = true;
+          }
+          break;
+        case 'deselect-all':
+          for (const checkbox of checkboxes) {
+            checkbox.checked = false;
+          }
+          break;
+        case 'inverse':
+          for (const checkbox of checkboxes) {
+            checkbox.checked = !checkbox.checked;
+          }
+          break;
+      }
+    });
+    document.getElementById('delete-selection')?.addEventListener('click', async function (e) {
+      e.preventDefault();
+      this.classList.add('is-loading', 'disabled');
+      const data = new FormData();
+      for (const checkbox of checkboxes) {
+        if (checkbox.checked) {
+          data.append('ids[]', checkbox.closest('.ui.checkbox').getAttribute('data-id'));
+        }
+      }
+      await POST(this.getAttribute('data-link'), {data});
+      window.location.href = this.getAttribute('data-redirect');
+    });
+  }
+}
diff --git a/web_src/js/features/admin/config.js b/web_src/js/features/admin/config.js
new file mode 100644
index 00000000..c3823425
--- /dev/null
+++ b/web_src/js/features/admin/config.js
@@ -0,0 +1,24 @@
+import {showTemporaryTooltip} from '../../modules/tippy.js';
+import {POST} from '../../modules/fetch.js';
+
+const {appSubUrl} = window.config;
+
+export function initAdminConfigs() {
+  const elAdminConfig = document.querySelector('.page-content.admin.config');
+  if (!elAdminConfig) return;
+
+  for (const el of elAdminConfig.querySelectorAll('input[type="checkbox"][data-config-dyn-key]')) {
+    el.addEventListener('change', async () => {
+      try {
+        const resp = await POST(`${appSubUrl}/admin/config`, {
+          data: new URLSearchParams({key: el.getAttribute('data-config-dyn-key'), value: el.checked}),
+        });
+        const json = await resp.json();
+        if (json.errorMessage) throw new Error(json.errorMessage);
+      } catch (ex) {
+        showTemporaryTooltip(el, ex.toString());
+        el.checked = !el.checked;
+      }
+    });
+  }
+}
diff --git a/web_src/js/features/admin/emails.js b/web_src/js/features/admin/emails.js
new file mode 100644
index 00000000..46fafa7e
--- /dev/null
+++ b/web_src/js/features/admin/emails.js
@@ -0,0 +1,14 @@
+import $ from 'jquery';
+
+export function initAdminEmails() {
+  function linkEmailAction(e) {
+    const $this = $(this);
+    $('#form-uid').val($this.data('uid'));
+    $('#form-email').val($this.data('email'));
+    $('#form-primary').val($this.data('primary'));
+    $('#form-activate').val($this.data('activate'));
+    $('#change-email-modal').modal('show');
+    e.preventDefault();
+  }
+  $('.link-email-action').on('click', linkEmailAction);
+}
diff --git a/web_src/js/features/admin/users.js b/web_src/js/features/admin/users.js
new file mode 100644
index 00000000..7cac603b
--- /dev/null
+++ b/web_src/js/features/admin/users.js
@@ -0,0 +1,39 @@
+export function initAdminUserListSearchForm() {
+  const searchForm = window.config.pageData.adminUserListSearchForm;
+  if (!searchForm) return;
+
+  const form = document.querySelector('#user-list-search-form');
+  if (!form) return;
+
+  for (const button of form.querySelectorAll(`button[name=sort][value="${searchForm.SortType}"]`)) {
+    button.classList.add('active');
+  }
+
+  if (searchForm.StatusFilterMap) {
+    for (const [k, v] of Object.entries(searchForm.StatusFilterMap)) {
+      if (!v) continue;
+      for (const input of form.querySelectorAll(`input[name="status_filter[${k}]"][value="${v}"]`)) {
+        input.checked = true;
+      }
+    }
+  }
+
+  for (const radio of form.querySelectorAll('input[type=radio]')) {
+    radio.addEventListener('click', () => {
+      form.submit();
+    });
+  }
+
+  const resetButtons = form.querySelectorAll('.j-reset-status-filter');
+  for (const button of resetButtons) {
+    button.addEventListener('click', (e) => {
+      e.preventDefault();
+      for (const input of form.querySelectorAll('input[type=radio]')) {
+        if (input.name.startsWith('status_filter[')) {
+          input.checked = false;
+        }
+      }
+      form.submit();
+    });
+  }
+}
diff --git a/web_src/js/features/autofocus-end.js b/web_src/js/features/autofocus-end.js
new file mode 100644
index 00000000..da71ce95
--- /dev/null
+++ b/web_src/js/features/autofocus-end.js
@@ -0,0 +1,6 @@
+export function initAutoFocusEnd() {
+  for (const el of document.querySelectorAll('.js-autofocus-end')) {
+    el.focus(); // expects only one such element on one page. If there are many, then the last one gets the focus.
+    el.setSelectionRange(el.value.length, el.value.length);
+  }
+}
diff --git a/web_src/js/features/captcha.js b/web_src/js/features/captcha.js
new file mode 100644
index 00000000..c803a500
--- /dev/null
+++ b/web_src/js/features/captcha.js
@@ -0,0 +1,51 @@
+import {isDarkTheme} from '../utils.js';
+
+export async function initCaptcha() {
+  const captchaEl = document.querySelector('#captcha');
+  if (!captchaEl) return;
+
+  const siteKey = captchaEl.getAttribute('data-sitekey');
+  const isDark = isDarkTheme();
+
+  const params = {
+    sitekey: siteKey,
+    theme: isDark ? 'dark' : 'light',
+  };
+
+  switch (captchaEl.getAttribute('data-captcha-type')) {
+    case 'g-recaptcha': {
+      if (window.grecaptcha) {
+        window.grecaptcha.ready(() => {
+          window.grecaptcha.render(captchaEl, params);
+        });
+      }
+      break;
+    }
+    case 'cf-turnstile': {
+      if (window.turnstile) {
+        window.turnstile.render(captchaEl, params);
+      }
+      break;
+    }
+    case 'h-captcha': {
+      if (window.hcaptcha) {
+        window.hcaptcha.render(captchaEl, params);
+      }
+      break;
+    }
+    case 'm-captcha': {
+      const {default: mCaptcha} = await import(/* webpackChunkName: "mcaptcha-vanilla-glue" */'@mcaptcha/vanilla-glue');
+      mCaptcha.INPUT_NAME = 'm-captcha-response';
+      const instanceURL = captchaEl.getAttribute('data-instance-url');
+
+      mCaptcha.default({
+        siteKey: {
+          instanceUrl: new URL(instanceURL),
+          key: siteKey,
+        },
+      });
+      break;
+    }
+    default:
+  }
+}
diff --git a/web_src/js/features/citation.js b/web_src/js/features/citation.js
new file mode 100644
index 00000000..7e26bff2
--- /dev/null
+++ b/web_src/js/features/citation.js
@@ -0,0 +1,50 @@
+import $ from 'jquery';
+import {getCurrentLocale} from '../utils.js';
+
+const {pageData} = window.config;
+
+async function initInputCitationValue(inputContent) {
+  const [{Cite, plugins}] = await Promise.all([
+    import(/* webpackChunkName: "citation-js-core" */'@citation-js/core'),
+    import(/* webpackChunkName: "citation-js-formats" */'@citation-js/plugin-software-formats'),
+    import(/* webpackChunkName: "citation-js-bibtex" */'@citation-js/plugin-bibtex'),
+  ]);
+  const {citationFileContent} = pageData;
+  const config = plugins.config.get('@bibtex');
+  config.constants.fieldTypes.doi = ['field', 'literal'];
+  config.constants.fieldTypes.version = ['field', 'literal'];
+  const citationFormatter = new Cite(citationFileContent);
+  const lang = getCurrentLocale() || 'en-US';
+  const bibtexOutput = citationFormatter.format('bibtex', {lang});
+  inputContent.value = bibtexOutput;
+}
+
+export async function initCitationFileCopyContent() {
+  if (!pageData.citationFileContent) return;
+
+  const inputContent = document.getElementById('citation-copy-content');
+
+  if (!inputContent) return;
+
+  document.getElementById('cite-repo-button')?.addEventListener('click', async (e) => {
+    const dropdownBtn = e.target.closest('.ui.dropdown.button');
+    dropdownBtn.classList.add('is-loading');
+
+    try {
+      try {
+        await initInputCitationValue(inputContent);
+      } catch (e) {
+        console.error(`initCitationFileCopyContent error: ${e}`, e);
+        return;
+      }
+
+      inputContent.addEventListener('click', () => {
+        inputContent.select();
+      });
+    } finally {
+      dropdownBtn.classList.remove('is-loading');
+    }
+
+    $('#cite-repo-modal').modal('show');
+  });
+}
diff --git a/web_src/js/features/clipboard.js b/web_src/js/features/clipboard.js
new file mode 100644
index 00000000..daf7e2ae
--- /dev/null
+++ b/web_src/js/features/clipboard.js
@@ -0,0 +1,32 @@
+import {showTemporaryTooltip} from '../modules/tippy.js';
+import {toAbsoluteUrl} from '../utils.js';
+import {clippie} from 'clippie';
+
+const {copy_success, copy_error} = window.config.i18n;
+
+// Enable clipboard copy from HTML attributes. These properties are supported:
+// - data-clipboard-text: Direct text to copy
+// - data-clipboard-target: Holds a selector for a <input> or <textarea> whose content is copied
+// - data-clipboard-text-type: When set to 'url' will convert relative to absolute urls
+export function initGlobalCopyToClipboardListener() {
+  document.addEventListener('click', async (e) => {
+    const target = e.target.closest('[data-clipboard-text], [data-clipboard-target]');
+    if (!target) return;
+
+    e.preventDefault();
+
+    let text = target.getAttribute('data-clipboard-text');
+    if (!text) {
+      text = document.querySelector(target.getAttribute('data-clipboard-target'))?.value;
+    }
+
+    if (text && target.getAttribute('data-clipboard-text-type') === 'url') {
+      text = toAbsoluteUrl(text);
+    }
+
+    if (text) {
+      const success = await clippie(text);
+      showTemporaryTooltip(target, success ? copy_success : copy_error);
+    }
+  });
+}
diff --git a/web_src/js/features/code-frequency.js b/web_src/js/features/code-frequency.js
new file mode 100644
index 00000000..47e1539d
--- /dev/null
+++ b/web_src/js/features/code-frequency.js
@@ -0,0 +1,21 @@
+import {createApp} from 'vue';
+
+export async function initRepoCodeFrequency() {
+  const el = document.getElementById('repo-code-frequency-chart');
+  if (!el) return;
+
+  const {default: RepoCodeFrequency} = await import(/* webpackChunkName: "code-frequency-graph" */'../components/RepoCodeFrequency.vue');
+  try {
+    const View = createApp(RepoCodeFrequency, {
+      locale: {
+        loadingTitle: el.getAttribute('data-locale-loading-title'),
+        loadingTitleFailed: el.getAttribute('data-locale-loading-title-failed'),
+        loadingInfo: el.getAttribute('data-locale-loading-info'),
+      },
+    });
+    View.mount(el);
+  } catch (err) {
+    console.error('RepoCodeFrequency failed to load', err);
+    el.textContent = el.getAttribute('data-locale-component-failed-to-load');
+  }
+}
diff --git a/web_src/js/features/codeeditor.js b/web_src/js/features/codeeditor.js
new file mode 100644
index 00000000..07a686f4
--- /dev/null
+++ b/web_src/js/features/codeeditor.js
@@ -0,0 +1,191 @@
+import tinycolor from 'tinycolor2';
+import {basename, extname, isObject, isDarkTheme} from '../utils.js';
+import {onInputDebounce} from '../utils/dom.js';
+
+const languagesByFilename = {};
+const languagesByExt = {};
+
+const baseOptions = {
+  fontFamily: 'var(--fonts-monospace)',
+  fontSize: 14, // https://github.com/microsoft/monaco-editor/issues/2242
+  guides: {bracketPairs: false, indentation: false},
+  links: false,
+  minimap: {enabled: false},
+  occurrencesHighlight: 'off',
+  overviewRulerLanes: 0,
+  renderLineHighlight: 'all',
+  renderLineHighlightOnlyWhenFocus: true,
+  rulers: false,
+  scrollbar: {horizontalScrollbarSize: 6, verticalScrollbarSize: 6},
+  scrollBeyondLastLine: false,
+  automaticLayout: true,
+};
+
+function getEditorconfig(input) {
+  try {
+    return JSON.parse(input.getAttribute('data-editorconfig'));
+  } catch {
+    return null;
+  }
+}
+
+function initLanguages(monaco) {
+  for (const {filenames, extensions, id} of monaco.languages.getLanguages()) {
+    for (const filename of filenames || []) {
+      languagesByFilename[filename] = id;
+    }
+    for (const extension of extensions || []) {
+      languagesByExt[extension] = id;
+    }
+  }
+}
+
+function getLanguage(filename) {
+  return languagesByFilename[filename] || languagesByExt[extname(filename)] || 'plaintext';
+}
+
+function updateEditor(monaco, editor, filename, lineWrapExts) {
+  editor.updateOptions(getFileBasedOptions(filename, lineWrapExts));
+  const model = editor.getModel();
+  const language = model.getLanguageId();
+  const newLanguage = getLanguage(filename);
+  if (language !== newLanguage) monaco.editor.setModelLanguage(model, newLanguage);
+}
+
+// export editor for customization - https://github.com/go-gitea/gitea/issues/10409
+function exportEditor(editor) {
+  if (!window.codeEditors) window.codeEditors = [];
+  if (!window.codeEditors.includes(editor)) window.codeEditors.push(editor);
+}
+
+export async function createMonaco(textarea, filename, editorOpts) {
+  const monaco = await import(/* webpackChunkName: "monaco" */'monaco-editor');
+
+  initLanguages(monaco);
+  let {language, ...other} = editorOpts;
+  if (!language) language = getLanguage(filename);
+
+  const container = document.createElement('div');
+  container.className = 'monaco-editor-container';
+  textarea.parentNode.append(container);
+
+  // https://github.com/microsoft/monaco-editor/issues/2427
+  // also, monaco can only parse 6-digit hex colors, so we convert the colors to that format
+  const styles = window.getComputedStyle(document.documentElement);
+  const getColor = (name) => tinycolor(styles.getPropertyValue(name).trim()).toString('hex6');
+
+  monaco.editor.defineTheme('gitea', {
+    base: isDarkTheme() ? 'vs-dark' : 'vs',
+    inherit: true,
+    rules: [
+      {
+        background: getColor('--color-code-bg'),
+      },
+    ],
+    colors: {
+      'editor.background': getColor('--color-code-bg'),
+      'editor.foreground': getColor('--color-text'),
+      'editor.inactiveSelectionBackground': getColor('--color-primary-light-4'),
+      'editor.lineHighlightBackground': getColor('--color-editor-line-highlight'),
+      'editor.selectionBackground': getColor('--color-primary-light-3'),
+      'editor.selectionForeground': getColor('--color-primary-light-3'),
+      'editorLineNumber.background': getColor('--color-code-bg'),
+      'editorLineNumber.foreground': getColor('--color-secondary-dark-6'),
+      'editorWidget.background': getColor('--color-body'),
+      'editorWidget.border': getColor('--color-secondary'),
+      'input.background': getColor('--color-input-background'),
+      'input.border': getColor('--color-input-border'),
+      'input.foreground': getColor('--color-input-text'),
+      'scrollbar.shadow': getColor('--color-shadow'),
+      'progressBar.background': getColor('--color-primary'),
+    },
+  });
+
+  const editor = monaco.editor.create(container, {
+    value: textarea.value,
+    theme: 'gitea',
+    language,
+    ...other,
+  });
+
+  monaco.editor.addKeybindingRules([
+    {keybinding: monaco.KeyCode.Enter, command: null}, // disable enter from accepting code completion
+  ]);
+
+  const model = editor.getModel();
+  model.onDidChangeContent(() => {
+    textarea.value = editor.getValue({preserveBOM: true});
+    textarea.dispatchEvent(new Event('change')); // seems to be needed for jquery-are-you-sure
+  });
+
+  exportEditor(editor);
+
+  const loading = document.querySelector('.editor-loading');
+  if (loading) loading.remove();
+
+  return {monaco, editor};
+}
+
+function getFileBasedOptions(filename, lineWrapExts) {
+  return {
+    wordWrap: (lineWrapExts || []).includes(extname(filename)) ? 'on' : 'off',
+  };
+}
+
+function togglePreviewDisplay(previewable) {
+  const previewTab = document.querySelector('a[data-tab="preview"]');
+  if (!previewTab) return;
+
+  if (previewable) {
+    const newUrl = (previewTab.getAttribute('data-url') || '').replace(/(.*)\/.*/, `$1/markup`);
+    previewTab.setAttribute('data-url', newUrl);
+    previewTab.style.display = '';
+  } else {
+    previewTab.style.display = 'none';
+    // If the "preview" tab was active, user changes the filename to a non-previewable one,
+    // then the "preview" tab becomes inactive (hidden), so the "write" tab should become active
+    if (previewTab.classList.contains('active')) {
+      const writeTab = document.querySelector('a[data-tab="write"]');
+      writeTab.click();
+    }
+  }
+}
+
+export async function createCodeEditor(textarea, filenameInput) {
+  const filename = basename(filenameInput.value);
+  const previewableExts = new Set((textarea.getAttribute('data-previewable-extensions') || '').split(','));
+  const lineWrapExts = (textarea.getAttribute('data-line-wrap-extensions') || '').split(',');
+  const previewable = previewableExts.has(extname(filename));
+  const editorConfig = getEditorconfig(filenameInput);
+
+  togglePreviewDisplay(previewable);
+
+  const {monaco, editor} = await createMonaco(textarea, filename, {
+    ...baseOptions,
+    ...getFileBasedOptions(filenameInput.value, lineWrapExts),
+    ...getEditorConfigOptions(editorConfig),
+  });
+
+  filenameInput.addEventListener('input', onInputDebounce(() => {
+    const filename = filenameInput.value;
+    const previewable = previewableExts.has(extname(filename));
+    togglePreviewDisplay(previewable);
+    updateEditor(monaco, editor, filename, lineWrapExts);
+  }));
+
+  return editor;
+}
+
+function getEditorConfigOptions(ec) {
+  if (!isObject(ec)) return {};
+
+  const opts = {};
+  opts.detectIndentation = !('indent_style' in ec) || !('indent_size' in ec);
+  if ('indent_size' in ec) opts.indentSize = Number(ec.indent_size);
+  if ('tab_width' in ec) opts.tabSize = Number(ec.tab_width) || opts.indentSize;
+  if ('max_line_length' in ec) opts.rulers = [Number(ec.max_line_length)];
+  opts.trimAutoWhitespace = ec.trim_trailing_whitespace === true;
+  opts.insertSpaces = ec.indent_style === 'space';
+  opts.useTabStops = ec.indent_style === 'tab';
+  return opts;
+}
diff --git a/web_src/js/features/colorpicker.js b/web_src/js/features/colorpicker.js
new file mode 100644
index 00000000..6d00d908
--- /dev/null
+++ b/web_src/js/features/colorpicker.js
@@ -0,0 +1,66 @@
+import {createTippy} from '../modules/tippy.js';
+
+export async function initColorPickers() {
+  const els = document.getElementsByClassName('js-color-picker-input');
+  if (!els.length) return;
+
+  await Promise.all([
+    import(/* webpackChunkName: "colorpicker" */'vanilla-colorful/hex-color-picker.js'),
+    import(/* webpackChunkName: "colorpicker" */'../../css/features/colorpicker.css'),
+  ]);
+
+  for (const el of els) {
+    initPicker(el);
+  }
+}
+
+function updateSquare(el, newValue) {
+  el.style.color = /#[0-9a-f]{6}/i.test(newValue) ? newValue : 'transparent';
+}
+
+function updatePicker(el, newValue) {
+  el.setAttribute('color', newValue);
+}
+
+function initPicker(el) {
+  const input = el.querySelector('input');
+
+  const square = document.createElement('div');
+  square.classList.add('preview-square');
+  updateSquare(square, input.value);
+  el.append(square);
+
+  const picker = document.createElement('hex-color-picker');
+  picker.addEventListener('color-changed', (e) => {
+    input.value = e.detail.value;
+    input.focus();
+    updateSquare(square, e.detail.value);
+  });
+
+  input.addEventListener('input', (e) => {
+    updateSquare(square, e.target.value);
+    updatePicker(picker, e.target.value);
+  });
+
+  createTippy(input, {
+    trigger: 'focus click',
+    theme: 'bare',
+    hideOnClick: true,
+    content: picker,
+    placement: 'bottom-start',
+    interactive: true,
+    onShow() {
+      updatePicker(picker, input.value);
+    },
+  });
+
+  // init precolors
+  for (const colorEl of el.querySelectorAll('.precolors .color')) {
+    colorEl.addEventListener('click', (e) => {
+      const newValue = e.target.getAttribute('data-color-hex');
+      input.value = newValue;
+      input.dispatchEvent(new Event('input', {bubbles: true}));
+      updateSquare(square, newValue);
+    });
+  }
+}
diff --git a/web_src/js/features/common-global.js b/web_src/js/features/common-global.js
new file mode 100644
index 00000000..e7db9b23
--- /dev/null
+++ b/web_src/js/features/common-global.js
@@ -0,0 +1,446 @@
+import $ from 'jquery';
+import '../vendor/jquery.are-you-sure.js';
+import {clippie} from 'clippie';
+import {createDropzone} from './dropzone.js';
+import {showGlobalErrorMessage} from '../bootstrap.js';
+import {handleGlobalEnterQuickSubmit} from './comp/QuickSubmit.js';
+import {svg} from '../svg.js';
+import {hideElem, showElem, toggleElem, initSubmitEventPolyfill, submitEventSubmitter} from '../utils/dom.js';
+import {htmlEscape} from 'escape-goat';
+import {showTemporaryTooltip} from '../modules/tippy.js';
+import {confirmModal} from './comp/ConfirmModal.js';
+import {showErrorToast} from '../modules/toast.js';
+import {request, POST, GET} from '../modules/fetch.js';
+import '../htmx.js';
+
+const {appUrl, appSubUrl, csrfToken, i18n} = window.config;
+
+export function initGlobalFormDirtyLeaveConfirm() {
+  // Warn users that try to leave a page after entering data into a form.
+  // Except on sign-in pages, and for forms marked as 'ignore-dirty'.
+  if (!$('.user.signin').length) {
+    $('form:not(.ignore-dirty)').areYouSure();
+  }
+}
+
+export function initHeadNavbarContentToggle() {
+  const navbar = document.getElementById('navbar');
+  const btn = document.getElementById('navbar-expand-toggle');
+  if (!navbar || !btn) return;
+
+  btn.addEventListener('click', () => {
+    const isExpanded = btn.classList.contains('active');
+    navbar.classList.toggle('navbar-menu-open', !isExpanded);
+    btn.classList.toggle('active', !isExpanded);
+  });
+}
+
+export function initFootLanguageMenu() {
+  async function linkLanguageAction() {
+    const $this = $(this);
+    await GET($this.data('url'));
+    window.location.reload();
+  }
+
+  $('.language-menu a[lang]').on('click', linkLanguageAction);
+}
+
+export function initGlobalEnterQuickSubmit() {
+  $(document).on('keydown', '.js-quick-submit', (e) => {
+    if (((e.ctrlKey && !e.altKey) || e.metaKey) && (e.key === 'Enter')) {
+      handleGlobalEnterQuickSubmit(e.target);
+      return false;
+    }
+  });
+}
+
+export function initGlobalButtonClickOnEnter() {
+  $(document).on('keypress', 'div.ui.button,span.ui.button', (e) => {
+    if (e.code === ' ' || e.code === 'Enter') {
+      $(e.target).trigger('click');
+      e.preventDefault();
+    }
+  });
+}
+
+// fetchActionDoRedirect does real redirection to bypass the browser's limitations of "location"
+// more details are in the backend's fetch-redirect handler
+function fetchActionDoRedirect(redirect) {
+  const form = document.createElement('form');
+  const input = document.createElement('input');
+  form.method = 'post';
+  form.action = `${appSubUrl}/-/fetch-redirect`;
+  input.type = 'hidden';
+  input.name = 'redirect';
+  input.value = redirect;
+  form.append(input);
+  document.body.append(form);
+  form.submit();
+}
+
+async function fetchActionDoRequest(actionElem, url, opt) {
+  try {
+    const resp = await request(url, opt);
+    if (resp.status === 200) {
+      let {redirect} = await resp.json();
+      redirect = redirect || actionElem.getAttribute('data-redirect');
+      actionElem.classList.remove('dirty'); // remove the areYouSure check before reloading
+      if (redirect) {
+        fetchActionDoRedirect(redirect);
+      } else {
+        window.location.reload();
+      }
+      return;
+    } else if (resp.status >= 400 && resp.status < 500) {
+      const data = await resp.json();
+      // the code was quite messy, sometimes the backend uses "err", sometimes it uses "error", and even "user_error"
+      // but at the moment, as a new approach, we only use "errorMessage" here, backend can use JSONError() to respond.
+      if (data.errorMessage) {
+        showErrorToast(data.errorMessage, {useHtmlBody: data.renderFormat === 'html'});
+      } else {
+        showErrorToast(`server error: ${resp.status}`);
+      }
+    } else {
+      showErrorToast(`server error: ${resp.status}`);
+    }
+  } catch (e) {
+    if (e.name !== 'AbortError') {
+      console.error('error when doRequest', e);
+      showErrorToast(`${i18n.network_error} ${e}`);
+    }
+  }
+  actionElem.classList.remove('is-loading', 'loading-icon-2px');
+}
+
+async function formFetchAction(e) {
+  if (!e.target.classList.contains('form-fetch-action')) return;
+
+  e.preventDefault();
+  const formEl = e.target;
+  if (formEl.classList.contains('is-loading')) return;
+
+  formEl.classList.add('is-loading');
+  if (formEl.clientHeight < 50) {
+    formEl.classList.add('loading-icon-2px');
+  }
+
+  const formMethod = formEl.getAttribute('method') || 'get';
+  const formActionUrl = formEl.getAttribute('action');
+  const formData = new FormData(formEl);
+  const formSubmitter = submitEventSubmitter(e);
+  const [submitterName, submitterValue] = [formSubmitter?.getAttribute('name'), formSubmitter?.getAttribute('value')];
+  if (submitterName) {
+    formData.append(submitterName, submitterValue || '');
+  }
+
+  let reqUrl = formActionUrl;
+  const reqOpt = {method: formMethod.toUpperCase()};
+  if (formMethod.toLowerCase() === 'get') {
+    const params = new URLSearchParams();
+    for (const [key, value] of formData) {
+      params.append(key, value.toString());
+    }
+    const pos = reqUrl.indexOf('?');
+    if (pos !== -1) {
+      reqUrl = reqUrl.slice(0, pos);
+    }
+    reqUrl += `?${params.toString()}`;
+  } else {
+    reqOpt.body = formData;
+  }
+
+  await fetchActionDoRequest(formEl, reqUrl, reqOpt);
+}
+
+export function initGlobalCommon() {
+  // Semantic UI modules.
+  const $uiDropdowns = $('.ui.dropdown');
+
+  // do not init "custom" dropdowns, "custom" dropdowns are managed by their own code.
+  $uiDropdowns.filter(':not(.custom)').dropdown();
+
+  // The "jump" means this dropdown is mainly used for "menu" purpose,
+  // clicking an item will jump to somewhere else or trigger an action/function.
+  // When a dropdown is used for non-refresh actions with tippy,
+  // it must have this "jump" class to hide the tippy when dropdown is closed.
+  $uiDropdowns.filter('.jump').dropdown({
+    action: 'hide',
+    onShow() {
+      // hide associated tooltip while dropdown is open
+      this._tippy?.hide();
+      this._tippy?.disable();
+    },
+    onHide() {
+      this._tippy?.enable();
+
+      // hide all tippy elements of items after a while. eg: use Enter to click "Copy Link" in the Issue Context Menu
+      setTimeout(() => {
+        const $dropdown = $(this);
+        if ($dropdown.dropdown('is hidden')) {
+          $(this).find('.menu > .item').each((_, item) => {
+            item._tippy?.hide();
+          });
+        }
+      }, 2000);
+    },
+  });
+
+  // Special popup-directions, prevent Fomantic from guessing the popup direction.
+  // With default "direction: auto", if the viewport height is small, Fomantic would show the popup upward,
+  //   if the dropdown is at the beginning of the page, then the top part would be clipped by the window view.
+  //   eg: Issue List "Sort" dropdown
+  // But we can not set "direction: downward" for all dropdowns, because there is a bug in dropdown menu positioning when calculating the "left" position,
+  //   which would make some dropdown popups slightly shift out of the right viewport edge in some cases.
+  //   eg: the "Create New Repo" menu on the navbar.
+  $uiDropdowns.filter('.upward').dropdown('setting', 'direction', 'upward');
+  $uiDropdowns.filter('.downward').dropdown('setting', 'direction', 'downward');
+
+  $('.tabular.menu .item').tab();
+
+  initSubmitEventPolyfill();
+  document.addEventListener('submit', formFetchAction);
+  document.addEventListener('click', linkAction);
+}
+
+export function initGlobalDropzone() {
+  for (const el of document.querySelectorAll('.dropzone')) {
+    initDropzone(el);
+  }
+}
+
+export function initDropzone(el) {
+  const $dropzone = $(el);
+  const _promise = createDropzone(el, {
+    url: $dropzone.data('upload-url'),
+    headers: {'X-Csrf-Token': csrfToken},
+    maxFiles: $dropzone.data('max-file'),
+    maxFilesize: $dropzone.data('max-size'),
+    acceptedFiles: (['*/*', ''].includes($dropzone.data('accepts'))) ? null : $dropzone.data('accepts'),
+    addRemoveLinks: true,
+    dictDefaultMessage: $dropzone.data('default-message'),
+    dictInvalidFileType: $dropzone.data('invalid-input-type'),
+    dictFileTooBig: $dropzone.data('file-too-big'),
+    dictRemoveFile: $dropzone.data('remove-file'),
+    timeout: 0,
+    thumbnailMethod: 'contain',
+    thumbnailWidth: 480,
+    thumbnailHeight: 480,
+    init() {
+      this.on('success', (file, data) => {
+        file.uuid = data.uuid;
+        const $input = $(`<input id="${data.uuid}" name="files" type="hidden">`).val(data.uuid);
+        $dropzone.find('.files').append($input);
+        // Create a "Copy Link" element, to conveniently copy the image
+        // or file link as Markdown to the clipboard
+        const copyLinkElement = document.createElement('div');
+        copyLinkElement.className = 'tw-text-center';
+        // The a element has a hardcoded cursor: pointer because the default is overridden by .dropzone
+        copyLinkElement.innerHTML = `<a href="#" style="cursor: pointer;">${svg('octicon-copy', 14, 'copy link')} Copy link</a>`;
+        copyLinkElement.addEventListener('click', async (e) => {
+          e.preventDefault();
+          let fileMarkdown = `[${file.name}](/attachments/${file.uuid})`;
+          if (file.type.startsWith('image/')) {
+            fileMarkdown = `!${fileMarkdown}`;
+          } else if (file.type.startsWith('video/')) {
+            fileMarkdown = `<video src="/attachments/${file.uuid}" title="${htmlEscape(file.name)}" controls></video>`;
+          }
+          const success = await clippie(fileMarkdown);
+          showTemporaryTooltip(e.target, success ? i18n.copy_success : i18n.copy_error);
+        });
+        file.previewTemplate.append(copyLinkElement);
+      });
+      this.on('removedfile', (file) => {
+        $(`#${file.uuid}`).remove();
+        if ($dropzone.data('remove-url')) {
+          POST($dropzone.data('remove-url'), {
+            data: new URLSearchParams({file: file.uuid}),
+          });
+        }
+      });
+      this.on('error', function (file, message) {
+        showErrorToast(message);
+        this.removeFile(file);
+      });
+    },
+  });
+}
+
+async function linkAction(e) {
+  // A "link-action" can post AJAX request to its "data-url"
+  // Then the browser is redirected to: the "redirect" in response, or "data-redirect" attribute, or current URL by reloading.
+  // If the "link-action" has "data-modal-confirm" attribute, a confirm modal dialog will be shown before taking action.
+  const el = e.target.closest('.link-action');
+  if (!el) return;
+
+  e.preventDefault();
+  const url = el.getAttribute('data-url');
+  const doRequest = async () => {
+    el.disabled = true;
+    await fetchActionDoRequest(el, url, {method: 'POST'});
+    el.disabled = false;
+  };
+
+  const modalConfirmContent = htmlEscape(el.getAttribute('data-modal-confirm') || '');
+  if (!modalConfirmContent) {
+    await doRequest();
+    return;
+  }
+
+  const isRisky = el.classList.contains('red') || el.classList.contains('yellow') || el.classList.contains('orange') || el.classList.contains('negative');
+  if (await confirmModal({content: modalConfirmContent, buttonColor: isRisky ? 'orange' : 'primary'})) {
+    await doRequest();
+  }
+}
+
+export function initGlobalLinkActions() {
+  function showDeletePopup(e) {
+    e.preventDefault();
+    const $this = $(this);
+    const dataArray = $this.data();
+    let filter = '';
+    if (this.getAttribute('data-modal-id')) {
+      filter += `#${this.getAttribute('data-modal-id')}`;
+    }
+
+    const $dialog = $(`.delete.modal${filter}`);
+    $dialog.find('.name').text($this.data('name'));
+    for (const [key, value] of Object.entries(dataArray)) {
+      if (key && key.startsWith('data')) {
+        $dialog.find(`.${key}`).text(value);
+      }
+    }
+
+    $dialog.modal({
+      closable: false,
+      onApprove: async () => {
+        if ($this.data('type') === 'form') {
+          $($this.data('form')).trigger('submit');
+          return;
+        }
+        const postData = new FormData();
+        for (const [key, value] of Object.entries(dataArray)) {
+          if (key && key.startsWith('data')) {
+            postData.append(key.slice(4), value);
+          }
+          if (key === 'id') {
+            postData.append('id', value);
+          }
+        }
+
+        const response = await POST($this.data('url'), {data: postData});
+        if (response.ok) {
+          const data = await response.json();
+          window.location.href = data.redirect;
+        }
+      },
+    }).modal('show');
+  }
+
+  // Helpers.
+  $('.delete-button').on('click', showDeletePopup);
+}
+
+function initGlobalShowModal() {
+  // A ".show-modal" button will show a modal dialog defined by its "data-modal" attribute.
+  // Each "data-modal-{target}" attribute will be filled to target element's value or text-content.
+  // * First, try to query '#target'
+  // * Then, try to query '.target'
+  // * Then, try to query 'target' as HTML tag
+  // If there is a ".{attr}" part like "data-modal-form.action", then the form's "action" attribute will be set.
+  $('.show-modal').on('click', function (e) {
+    e.preventDefault();
+    const modalSelector = this.getAttribute('data-modal');
+    const $modal = $(modalSelector);
+    if (!$modal.length) {
+      throw new Error('no modal for this action');
+    }
+    const modalAttrPrefix = 'data-modal-';
+    for (const attrib of this.attributes) {
+      if (!attrib.name.startsWith(modalAttrPrefix)) {
+        continue;
+      }
+
+      const attrTargetCombo = attrib.name.substring(modalAttrPrefix.length);
+      const [attrTargetName, attrTargetAttr] = attrTargetCombo.split('.');
+      // try to find target by: "#target" -> ".target" -> "target tag"
+      let $attrTarget = $modal.find(`#${attrTargetName}`);
+      if (!$attrTarget.length) $attrTarget = $modal.find(`.${attrTargetName}`);
+      if (!$attrTarget.length) $attrTarget = $modal.find(`${attrTargetName}`);
+      if (!$attrTarget.length) continue; // TODO: show errors in dev mode to remind developers that there is a bug
+
+      if (attrTargetAttr) {
+        $attrTarget[0][attrTargetAttr] = attrib.value;
+      } else if ($attrTarget[0].matches('input, textarea')) {
+        $attrTarget.val(attrib.value); // FIXME: add more supports like checkbox
+      } else {
+        $attrTarget.text(attrib.value); // FIXME: it should be more strict here, only handle div/span/p
+      }
+    }
+
+    $modal.modal('setting', {
+      onApprove: () => {
+        // "form-fetch-action" can handle network errors gracefully,
+        // so keep the modal dialog to make users can re-submit the form if anything wrong happens.
+        if ($modal.find('.form-fetch-action').length) return false;
+      },
+    }).modal('show');
+  });
+}
+
+export function initGlobalButtons() {
+  // There are many "cancel button" elements in modal dialogs, Fomantic UI expects they are button-like elements but never submit a form.
+  // However, Gitea misuses the modal dialog and put the cancel buttons inside forms, so we must prevent the form submission.
+  // There are a few cancel buttons in non-modal forms, and there are some dynamically created forms (eg: the "Edit Issue Content")
+  $(document).on('click', 'form button.ui.cancel.button', (e) => {
+    e.preventDefault();
+  });
+
+  $('.show-panel').on('click', function (e) {
+    // a '.show-panel' element can show a panel, by `data-panel="selector"`
+    // if it has "toggle" class, it toggles the panel
+    e.preventDefault();
+    const sel = this.getAttribute('data-panel');
+    if (this.classList.contains('toggle')) {
+      toggleElem(sel);
+    } else {
+      showElem(sel);
+    }
+  });
+
+  $('.hide-panel').on('click', function (e) {
+    // a `.hide-panel` element can hide a panel, by `data-panel="selector"` or `data-panel-closest="selector"`
+    e.preventDefault();
+    let sel = this.getAttribute('data-panel');
+    if (sel) {
+      hideElem($(sel));
+      return;
+    }
+    sel = this.getAttribute('data-panel-closest');
+    if (sel) {
+      hideElem($(this).closest(sel));
+      return;
+    }
+    // should never happen, otherwise there is a bug in code
+    showErrorToast('Nothing to hide');
+  });
+
+  initGlobalShowModal();
+}
+
+/**
+ * Too many users set their ROOT_URL to wrong value, and it causes a lot of problems:
+ *   * Cross-origin API request without correct cookie
+ *   * Incorrect href in <a>
+ *   * ...
+ * So we check whether current URL starts with AppUrl(ROOT_URL).
+ * If they don't match, show a warning to users.
+ */
+export function checkAppUrl() {
+  const curUrl = window.location.href;
+  // some users visit "https://domain/gitea" while appUrl is "https://domain/gitea/", there should be no warning
+  if (curUrl.startsWith(appUrl) || `${curUrl}/` === appUrl) {
+    return;
+  }
+  showGlobalErrorMessage(`Your ROOT_URL in app.ini is "${appUrl}", it's unlikely matching the site you are visiting.
+Mismatched ROOT_URL config causes wrong URL links for web UI/mail content/webhook notification/OAuth2 sign-in.`);
+}
diff --git a/web_src/js/features/common-issue-list.js b/web_src/js/features/common-issue-list.js
new file mode 100644
index 00000000..0c0f6c56
--- /dev/null
+++ b/web_src/js/features/common-issue-list.js
@@ -0,0 +1,68 @@
+import {isElemHidden, onInputDebounce, submitEventSubmitter, toggleElem} from '../utils/dom.js';
+import {GET} from '../modules/fetch.js';
+
+const {appSubUrl} = window.config;
+const reIssueIndex = /^(\d+)$/; // eg: "123"
+const reIssueSharpIndex = /^#(\d+)$/; // eg: "#123"
+const reIssueOwnerRepoIndex = /^([-.\w]+)\/([-.\w]+)#(\d+)$/;  // eg: "{owner}/{repo}#{index}"
+
+// if the searchText can be parsed to an "issue goto link", return the link, otherwise return empty string
+export function parseIssueListQuickGotoLink(repoLink, searchText) {
+  searchText = searchText.trim();
+  let targetUrl = '';
+  if (repoLink) {
+    // try to parse it in current repo
+    if (reIssueIndex.test(searchText)) {
+      targetUrl = `${repoLink}/issues/${searchText}`;
+    } else if (reIssueSharpIndex.test(searchText)) {
+      targetUrl = `${repoLink}/issues/${searchText.substr(1)}`;
+    }
+  } else {
+    // try to parse it for a global search (eg: "owner/repo#123")
+    const matchIssueOwnerRepoIndex = searchText.match(reIssueOwnerRepoIndex);
+    if (matchIssueOwnerRepoIndex) {
+      const [_, owner, repo, index] = matchIssueOwnerRepoIndex;
+      targetUrl = `${appSubUrl}/${owner}/${repo}/issues/${index}`;
+    }
+  }
+  return targetUrl;
+}
+
+export function initCommonIssueListQuickGoto() {
+  const goto = document.getElementById('issue-list-quick-goto');
+  if (!goto) return;
+
+  const form = goto.closest('form');
+  const input = form.querySelector('input[name=q]');
+  const repoLink = goto.getAttribute('data-repo-link');
+
+  form.addEventListener('submit', (e) => {
+    // if there is no goto button, or the form is submitted by non-quick-goto elements, submit the form directly
+    let doQuickGoto = !isElemHidden(goto);
+    const submitter = submitEventSubmitter(e);
+    if (submitter !== form && submitter !== input && submitter !== goto) doQuickGoto = false;
+    if (!doQuickGoto) return;
+
+    // if there is a goto button, use its link
+    e.preventDefault();
+    window.location.href = goto.getAttribute('data-issue-goto-link');
+  });
+
+  const onInput = async () => {
+    const searchText = input.value;
+    // try to check whether the parsed goto link is valid
+    let targetUrl = parseIssueListQuickGotoLink(repoLink, searchText);
+    if (targetUrl) {
+      const res = await GET(`${targetUrl}/info`);
+      if (res.status !== 200) targetUrl = '';
+    }
+    // if the input value has changed, then ignore the result
+    if (input.value !== searchText) return;
+
+    toggleElem(goto, Boolean(targetUrl));
+    goto.setAttribute('data-issue-goto-link', targetUrl);
+  };
+
+  input.addEventListener('input', onInputDebounce(onInput));
+  onInput();
+}
diff --git a/web_src/js/features/common-issue-list.test.js b/web_src/js/features/common-issue-list.test.js
new file mode 100644
index 00000000..da7ea64b
--- /dev/null
+++ b/web_src/js/features/common-issue-list.test.js
@@ -0,0 +1,16 @@
+import {parseIssueListQuickGotoLink} from './common-issue-list.js';
+
+test('parseIssueListQuickGotoLink', () => {
+  expect(parseIssueListQuickGotoLink('/link', '')).toEqual('');
+  expect(parseIssueListQuickGotoLink('/link', 'abc')).toEqual('');
+  expect(parseIssueListQuickGotoLink('/link', '123')).toEqual('/link/issues/123');
+  expect(parseIssueListQuickGotoLink('/link', '#123')).toEqual('/link/issues/123');
+  expect(parseIssueListQuickGotoLink('/link', 'owner/repo#123')).toEqual('');
+
+  expect(parseIssueListQuickGotoLink('', '')).toEqual('');
+  expect(parseIssueListQuickGotoLink('', 'abc')).toEqual('');
+  expect(parseIssueListQuickGotoLink('', '123')).toEqual('');
+  expect(parseIssueListQuickGotoLink('', '#123')).toEqual('');
+  expect(parseIssueListQuickGotoLink('', 'owner/repo#')).toEqual('');
+  expect(parseIssueListQuickGotoLink('', 'owner/repo#123')).toEqual('/owner/repo/issues/123');
+});
diff --git a/web_src/js/features/common-organization.js b/web_src/js/features/common-organization.js
new file mode 100644
index 00000000..442714a3
--- /dev/null
+++ b/web_src/js/features/common-organization.js
@@ -0,0 +1,16 @@
+import {initCompLabelEdit} from './comp/LabelEdit.js';
+import {toggleElem} from '../utils/dom.js';
+
+export function initCommonOrganization() {
+  if (!document.querySelectorAll('.organization').length) {
+    return;
+  }
+
+  document.querySelector('.organization.settings.options #org_name')?.addEventListener('input', function () {
+    const nameChanged = this.value.toLowerCase() !== this.getAttribute('data-org-name').toLowerCase();
+    toggleElem('#org-name-change-prompt', nameChanged);
+  });
+
+  // Labels
+  initCompLabelEdit('.organization.settings.labels');
+}
diff --git a/web_src/js/features/comp/ComboMarkdownEditor.js b/web_src/js/features/comp/ComboMarkdownEditor.js
new file mode 100644
index 00000000..70e92de0
--- /dev/null
+++ b/web_src/js/features/comp/ComboMarkdownEditor.js
@@ -0,0 +1,413 @@
+import '@github/markdown-toolbar-element';
+import '@github/text-expander-element';
+import $ from 'jquery';
+import {attachTribute} from '../tribute.js';
+import {hideElem, showElem, autosize, isElemVisible} from '../../utils/dom.js';
+import {initEasyMDEPaste, initTextareaPaste} from './Paste.js';
+import {handleGlobalEnterQuickSubmit} from './QuickSubmit.js';
+import {renderPreviewPanelContent} from '../repo-editor.js';
+import {easyMDEToolbarActions} from './EasyMDEToolbarActions.js';
+import {initTextExpander} from './TextExpander.js';
+import {showErrorToast} from '../../modules/toast.js';
+import {POST} from '../../modules/fetch.js';
+
+let elementIdCounter = 0;
+
+/**
+ * validate if the given textarea is non-empty.
+ * @param {HTMLElement} textarea - The textarea element to be validated.
+ * @returns {boolean} returns true if validation succeeded.
+ */
+export function validateTextareaNonEmpty(textarea) {
+  // When using EasyMDE, the original edit area HTML element is hidden, breaking HTML5 input validation.
+  // The workaround (https://github.com/sparksuite/simplemde-markdown-editor/issues/324) doesn't work with contenteditable, so we just show an alert.
+  if (!textarea.value) {
+    if (isElemVisible(textarea)) {
+      textarea.required = true;
+      const form = textarea.closest('form');
+      form?.reportValidity();
+    } else {
+      // The alert won't hurt users too much, because we are dropping the EasyMDE and the check only occurs in a few places.
+      showErrorToast('Require non-empty content');
+    }
+    return false;
+  }
+  return true;
+}
+
+class ComboMarkdownEditor {
+  constructor(container, options = {}) {
+    container._giteaComboMarkdownEditor = this;
+    this.options = options;
+    this.container = container;
+  }
+
+  async init() {
+    this.prepareEasyMDEToolbarActions();
+    this.setupContainer();
+    this.setupTab();
+    this.setupDropzone();
+    this.setupTextarea();
+
+    await this.switchToUserPreference();
+  }
+
+  applyEditorHeights(el, heights) {
+    if (!heights) return;
+    if (heights.minHeight) el.style.minHeight = heights.minHeight;
+    if (heights.height) el.style.height = heights.height;
+    if (heights.maxHeight) el.style.maxHeight = heights.maxHeight;
+  }
+
+  setupContainer() {
+    initTextExpander(this.container.querySelector('text-expander'));
+    this.container.addEventListener('ce-editor-content-changed', (e) => this.options?.onContentChanged?.(this, e));
+  }
+
+  setupTextarea() {
+    this.textarea = this.container.querySelector('.markdown-text-editor');
+    this.textarea._giteaComboMarkdownEditor = this;
+    this.textarea.id = `_combo_markdown_editor_${String(elementIdCounter++)}`;
+    this.textarea.addEventListener('input', (e) => this.options?.onContentChanged?.(this, e));
+    this.applyEditorHeights(this.textarea, this.options.editorHeights);
+
+    if (this.textarea.getAttribute('data-disable-autosize') !== 'true') {
+      this.textareaAutosize = autosize(this.textarea, {viewportMarginBottom: 130});
+    }
+
+    this.textareaMarkdownToolbar = this.container.querySelector('markdown-toolbar');
+    this.textareaMarkdownToolbar.setAttribute('for', this.textarea.id);
+    for (const el of this.textareaMarkdownToolbar.querySelectorAll('.markdown-toolbar-button')) {
+      // upstream bug: The role code is never executed in base MarkdownButtonElement https://github.com/github/markdown-toolbar-element/issues/70
+      el.setAttribute('role', 'button');
+      // the editor usually is in a form, so the buttons should have "type=button", avoiding conflicting with the form's submit.
+      if (el.nodeName === 'BUTTON' && !el.getAttribute('type')) el.setAttribute('type', 'button');
+    }
+    this.textareaMarkdownToolbar.querySelector('button[data-md-action="indent"]')?.addEventListener('click', () => {
+      this.indentSelection(false);
+    });
+    this.textareaMarkdownToolbar.querySelector('button[data-md-action="unindent"]')?.addEventListener('click', () => {
+      this.indentSelection(true);
+    });
+
+    this.textarea.addEventListener('keydown', (e) => {
+      if (e.shiftKey) {
+        e.target._shiftDown = true;
+      }
+      if (e.key === 'Enter' && !e.shiftKey && !e.ctrlKey && !e.altKey) {
+        if (!this.breakLine()) return; // Nothing changed, let the default handler work.
+        this.options?.onContentChanged?.(this, e);
+        e.preventDefault();
+      }
+    });
+    this.textarea.addEventListener('keyup', (e) => {
+      if (!e.shiftKey) {
+        e.target._shiftDown = false;
+      }
+    });
+
+    const monospaceButton = this.container.querySelector('.markdown-switch-monospace');
+    const monospaceEnabled = localStorage?.getItem('markdown-editor-monospace') === 'true';
+    const monospaceText = monospaceButton.getAttribute(monospaceEnabled ? 'data-disable-text' : 'data-enable-text');
+    monospaceButton.setAttribute('data-tooltip-content', monospaceText);
+    monospaceButton.setAttribute('aria-checked', String(monospaceEnabled));
+
+    monospaceButton?.addEventListener('click', (e) => {
+      e.preventDefault();
+      const enabled = localStorage?.getItem('markdown-editor-monospace') !== 'true';
+      localStorage.setItem('markdown-editor-monospace', String(enabled));
+      this.textarea.classList.toggle('tw-font-mono', enabled);
+      const text = monospaceButton.getAttribute(enabled ? 'data-disable-text' : 'data-enable-text');
+      monospaceButton.setAttribute('data-tooltip-content', text);
+      monospaceButton.setAttribute('aria-checked', String(enabled));
+    });
+
+    const easymdeButton = this.container.querySelector('.markdown-switch-easymde');
+    easymdeButton?.addEventListener('click', async (e) => {
+      e.preventDefault();
+      this.userPreferredEditor = 'easymde';
+      await this.switchToEasyMDE();
+    });
+
+    if (this.dropzone) {
+      initTextareaPaste(this.textarea, this.dropzone);
+    }
+  }
+
+  setupDropzone() {
+    const dropzoneParentContainer = this.container.getAttribute('data-dropzone-parent-container');
+    if (dropzoneParentContainer) {
+      this.dropzone = this.container.closest(this.container.getAttribute('data-dropzone-parent-container'))?.querySelector('.dropzone');
+    }
+  }
+
+  setupTab() {
+    const $container = $(this.container);
+    const tabs = $container[0].querySelectorAll('.tabular.menu > .item');
+
+    // Fomantic Tab requires the "data-tab" to be globally unique.
+    // So here it uses our defined "data-tab-for" and "data-tab-panel" to generate the "data-tab" attribute for Fomantic.
+    const tabEditor = Array.from(tabs).find((tab) => tab.getAttribute('data-tab-for') === 'markdown-writer');
+    const tabPreviewer = Array.from(tabs).find((tab) => tab.getAttribute('data-tab-for') === 'markdown-previewer');
+    tabEditor.setAttribute('data-tab', `markdown-writer-${elementIdCounter}`);
+    tabPreviewer.setAttribute('data-tab', `markdown-previewer-${elementIdCounter}`);
+    const panelEditor = $container[0].querySelector('.ui.tab[data-tab-panel="markdown-writer"]');
+    const panelPreviewer = $container[0].querySelector('.ui.tab[data-tab-panel="markdown-previewer"]');
+    panelEditor.setAttribute('data-tab', `markdown-writer-${elementIdCounter}`);
+    panelPreviewer.setAttribute('data-tab', `markdown-previewer-${elementIdCounter}`);
+    elementIdCounter++;
+
+    tabEditor.addEventListener('click', () => {
+      requestAnimationFrame(() => {
+        this.focus();
+      });
+    });
+
+    $(tabs).tab();
+
+    this.previewUrl = tabPreviewer.getAttribute('data-preview-url');
+    this.previewContext = tabPreviewer.getAttribute('data-preview-context');
+    this.previewMode = this.options.previewMode ?? 'comment';
+    this.previewWiki = this.options.previewWiki ?? false;
+    tabPreviewer.addEventListener('click', async () => {
+      const formData = new FormData();
+      formData.append('mode', this.previewMode);
+      formData.append('context', this.previewContext);
+      formData.append('text', this.value());
+      formData.append('wiki', this.previewWiki);
+      const response = await POST(this.previewUrl, {data: formData});
+      const data = await response.text();
+      renderPreviewPanelContent($(panelPreviewer), data);
+    });
+  }
+
+  prepareEasyMDEToolbarActions() {
+    this.easyMDEToolbarDefault = [
+      'bold', 'italic', 'strikethrough', '|', 'heading-1', 'heading-2', 'heading-3',
+      'heading-bigger', 'heading-smaller', '|', 'code', 'quote', '|', 'gitea-checkbox-empty',
+      'gitea-checkbox-checked', '|', 'unordered-list', 'ordered-list', '|', 'link', 'image',
+      'table', 'horizontal-rule', '|', 'gitea-switch-to-textarea',
+    ];
+  }
+
+  parseEasyMDEToolbar(EasyMDE, actions) {
+    this.easyMDEToolbarActions = this.easyMDEToolbarActions || easyMDEToolbarActions(EasyMDE, this);
+    const processed = [];
+    for (const action of actions) {
+      const actionButton = this.easyMDEToolbarActions[action];
+      if (!actionButton) throw new Error(`Unknown EasyMDE toolbar action ${action}`);
+      processed.push(actionButton);
+    }
+    return processed;
+  }
+
+  async switchToUserPreference() {
+    if (this.userPreferredEditor === 'easymde') {
+      await this.switchToEasyMDE();
+    } else {
+      this.switchToTextarea();
+    }
+  }
+
+  switchToTextarea() {
+    if (!this.easyMDE) return;
+    showElem(this.textareaMarkdownToolbar);
+    if (this.easyMDE) {
+      this.easyMDE.toTextArea();
+      this.easyMDE = null;
+    }
+  }
+
+  async switchToEasyMDE() {
+    if (this.easyMDE) return;
+    // EasyMDE's CSS should be loaded via webpack config, otherwise our own styles can not overwrite the default styles.
+    const {default: EasyMDE} = await import(/* webpackChunkName: "easymde" */'easymde');
+    const easyMDEOpt = {
+      autoDownloadFontAwesome: false,
+      element: this.textarea,
+      forceSync: true,
+      renderingConfig: {singleLineBreaks: false},
+      indentWithTabs: false,
+      tabSize: 4,
+      spellChecker: false,
+      inputStyle: 'contenteditable', // nativeSpellcheck requires contenteditable
+      nativeSpellcheck: true,
+      ...this.options.easyMDEOptions,
+    };
+    easyMDEOpt.toolbar = this.parseEasyMDEToolbar(EasyMDE, easyMDEOpt.toolbar ?? this.easyMDEToolbarDefault);
+
+    this.easyMDE = new EasyMDE(easyMDEOpt);
+    this.easyMDE.codemirror.on('change', (...args) => {this.options?.onContentChanged?.(this, ...args)});
+    this.easyMDE.codemirror.setOption('extraKeys', {
+      'Cmd-Enter': (cm) => handleGlobalEnterQuickSubmit(cm.getTextArea()),
+      'Ctrl-Enter': (cm) => handleGlobalEnterQuickSubmit(cm.getTextArea()),
+      Enter: (cm) => {
+        const tributeContainer = document.querySelector('.tribute-container');
+        if (!tributeContainer || tributeContainer.style.display === 'none') {
+          cm.execCommand('newlineAndIndent');
+        }
+      },
+      Up: (cm) => {
+        const tributeContainer = document.querySelector('.tribute-container');
+        if (!tributeContainer || tributeContainer.style.display === 'none') {
+          return cm.execCommand('goLineUp');
+        }
+      },
+      Down: (cm) => {
+        const tributeContainer = document.querySelector('.tribute-container');
+        if (!tributeContainer || tributeContainer.style.display === 'none') {
+          return cm.execCommand('goLineDown');
+        }
+      },
+    });
+    this.applyEditorHeights(this.container.querySelector('.CodeMirror-scroll'), this.options.editorHeights);
+    await attachTribute(this.easyMDE.codemirror.getInputField(), {mentions: true, emoji: true});
+    initEasyMDEPaste(this.easyMDE, this.dropzone);
+    hideElem(this.textareaMarkdownToolbar);
+  }
+
+  value(v = undefined) {
+    if (v === undefined) {
+      if (this.easyMDE) {
+        return this.easyMDE.value();
+      }
+      return this.textarea.value;
+    }
+
+    if (this.easyMDE) {
+      this.easyMDE.value(v);
+    } else {
+      this.textarea.value = v;
+    }
+    this.textareaAutosize?.resizeToFit();
+  }
+
+  focus() {
+    if (this.easyMDE) {
+      this.easyMDE.codemirror.focus();
+    } else {
+      this.textarea.focus();
+    }
+  }
+
+  moveCursorToEnd() {
+    this.textarea.focus();
+    this.textarea.setSelectionRange(this.textarea.value.length, this.textarea.value.length);
+    if (this.easyMDE) {
+      this.easyMDE.codemirror.focus();
+      this.easyMDE.codemirror.setCursor(this.easyMDE.codemirror.lineCount(), 0);
+    }
+  }
+
+  indentSelection(unindent) {
+    // Indent with 4 spaces, unindent 4 spaces or fewer or a lost tab.
+    const indentPrefix = '    ';
+    const unindentRegex = /^( {1,4}|\t)/;
+
+    // Indent all lines that are included in the selection, partially or whole, while preserving the original selection at the end.
+    const lines = this.textarea.value.split('\n');
+    const changedLines = [];
+    // The current selection or cursor position.
+    const [start, end] = [this.textarea.selectionStart, this.textarea.selectionEnd];
+    // The range containing whole lines that will effectively be replaced.
+    let [editStart, editEnd] = [start, end];
+    // The range that needs to be re-selected to match previous selection.
+    let [newStart, newEnd] = [start, end];
+    // The start and end position of the current line (where end points to the newline or EOF)
+    let [lineStart, lineEnd] = [0, 0];
+
+    for (const line of lines) {
+      lineEnd = lineStart + line.length + 1;
+      if (lineEnd <= start) {
+        lineStart = lineEnd;
+        continue;
+      }
+
+      const updated = unindent ? line.replace(unindentRegex, '') : indentPrefix + line;
+      changedLines.push(updated);
+      const move = updated.length - line.length;
+
+      if (start >= lineStart && start < lineEnd) {
+        editStart = lineStart;
+        newStart = Math.max(start + move, lineStart);
+      }
+
+      newEnd += move;
+      editEnd = lineEnd - 1;
+      lineStart = lineEnd;
+      if (lineStart > end) break;
+    }
+
+    // Update changed lines whole.
+    const text = changedLines.join('\n');
+    this.textarea.focus();
+    this.textarea.setSelectionRange(editStart, editEnd);
+    if (!document.execCommand('insertText', false, text)) {
+      // execCommand is deprecated, but setRangeText (and any other direct value modifications) erases the native undo history.
+      // So only fall back to it if execCommand fails.
+      this.textarea.setRangeText(text);
+    }
+
+    // Set selection to (effectively) be the same as before.
+    this.textarea.setSelectionRange(newStart, Math.max(newStart, newEnd));
+  }
+
+  breakLine() {
+    const [start, end] = [this.textarea.selectionStart, this.textarea.selectionEnd];
+
+    // Do nothing if a range is selected
+    if (start !== end) return false;
+
+    const value = this.textarea.value;
+    // Find the beginning of the current line.
+    const lineStart = Math.max(0, value.lastIndexOf('\n', start - 1) + 1);
+    // Find the end and extract the line.
+    const lineEnd = value.indexOf('\n', start);
+    const line = value.slice(lineStart, lineEnd < 0 ? value.length : lineEnd);
+    // Match any whitespace at the start + any repeatable prefix + exactly one space after.
+    const prefix = line.match(/^\s*((\d+)[.)]\s|[-*+]\s+(\[[ x]\]\s?)?|(>\s+)+)?/);
+
+    // Defer to browser if we can't do anything more useful, or if the cursor is inside the prefix.
+    if (!prefix || !prefix[0].length || lineStart + prefix[0].length > start) return false;
+
+    // Insert newline + prefix.
+    let text = `\n${prefix[0]}`;
+    // Increment a number if present. (perhaps detecting repeating 1. and not doing that then would be a good idea)
+    const num = text.match(/\d+/);
+    if (num) text = text.replace(num[0], Number(num[0]) + 1);
+    text = text.replace('[x]', '[ ]');
+
+    if (!document.execCommand('insertText', false, text)) {
+      this.textarea.setRangeText(text);
+    }
+
+    return true;
+  }
+
+  get userPreferredEditor() {
+    return window.localStorage.getItem(`markdown-editor-${this.options.useScene ?? 'default'}`);
+  }
+  set userPreferredEditor(s) {
+    window.localStorage.setItem(`markdown-editor-${this.options.useScene ?? 'default'}`, s);
+  }
+}
+
+export function getComboMarkdownEditor(el) {
+  if (el instanceof $) el = el[0];
+  return el?._giteaComboMarkdownEditor;
+}
+
+export async function initComboMarkdownEditor(container, options = {}) {
+  if (container instanceof $) {
+    if (container.length !== 1) {
+      throw new Error('initComboMarkdownEditor: container must be a single element');
+    }
+    container = container[0];
+  }
+  if (!container) {
+    throw new Error('initComboMarkdownEditor: container is null');
+  }
+  const editor = new ComboMarkdownEditor(container, options);
+  await editor.init();
+  return editor;
+}
diff --git a/web_src/js/features/comp/ConfirmModal.js b/web_src/js/features/comp/ConfirmModal.js
new file mode 100644
index 00000000..e64996a3
--- /dev/null
+++ b/web_src/js/features/comp/ConfirmModal.js
@@ -0,0 +1,30 @@
+import $ from 'jquery';
+import {svg} from '../../svg.js';
+import {htmlEscape} from 'escape-goat';
+
+const {i18n} = window.config;
+
+export async function confirmModal(opts = {content: '', buttonColor: 'primary'}) {
+  return new Promise((resolve) => {
+    const $modal = $(`
+<div class="ui g-modal-confirm modal">
+  <div class="content">${htmlEscape(opts.content)}</div>
+  <div class="actions">
+    <button class="ui cancel button">${svg('octicon-x')} ${i18n.modal_cancel}</button>
+    <button class="ui ${opts.buttonColor || 'primary'} ok button">${svg('octicon-check')} ${i18n.modal_confirm}</button>
+  </div>
+</div>
+`);
+
+    $modal.appendTo(document.body);
+    $modal.modal({
+      onApprove() {
+        resolve(true);
+      },
+      onHidden() {
+        $modal.remove();
+        resolve(false);
+      },
+    }).modal('show');
+  });
+}
diff --git a/web_src/js/features/comp/EasyMDEToolbarActions.js b/web_src/js/features/comp/EasyMDEToolbarActions.js
new file mode 100644
index 00000000..35abb877
--- /dev/null
+++ b/web_src/js/features/comp/EasyMDEToolbarActions.js
@@ -0,0 +1,152 @@
+import {svg} from '../../svg.js';
+
+export function easyMDEToolbarActions(EasyMDE, editor) {
+  const actions = {
+    '|': '|',
+    'heading-1': {
+      action: EasyMDE.toggleHeading1,
+      icon: svg('octicon-heading'),
+      title: 'Heading 1',
+    },
+    'heading-2': {
+      action: EasyMDE.toggleHeading2,
+      icon: svg('octicon-heading'),
+      title: 'Heading 2',
+    },
+    'heading-3': {
+      action: EasyMDE.toggleHeading3,
+      icon: svg('octicon-heading'),
+      title: 'Heading 3',
+    },
+    'heading-smaller': {
+      action: EasyMDE.toggleHeadingSmaller,
+      icon: svg('octicon-heading'),
+      title: 'Decrease Heading',
+    },
+    'heading-bigger': {
+      action: EasyMDE.toggleHeadingBigger,
+      icon: svg('octicon-heading'),
+      title: 'Increase Heading',
+    },
+    'bold': {
+      action: EasyMDE.toggleBold,
+      icon: svg('octicon-bold'),
+      title: 'Bold',
+    },
+    'italic': {
+      action: EasyMDE.toggleItalic,
+      icon: svg('octicon-italic'),
+      title: 'Italic',
+    },
+    'strikethrough': {
+      action: EasyMDE.toggleStrikethrough,
+      icon: svg('octicon-strikethrough'),
+      title: 'Strikethrough',
+    },
+    'quote': {
+      action: EasyMDE.toggleBlockquote,
+      icon: svg('octicon-quote'),
+      title: 'Quote',
+    },
+    'code': {
+      action: EasyMDE.toggleCodeBlock,
+      icon: svg('octicon-code'),
+      title: 'Code',
+    },
+    'link': {
+      action: EasyMDE.drawLink,
+      icon: svg('octicon-link'),
+      title: 'Link',
+    },
+    'unordered-list': {
+      action: EasyMDE.toggleUnorderedList,
+      icon: svg('octicon-list-unordered'),
+      title: 'Unordered List',
+    },
+    'ordered-list': {
+      action: EasyMDE.toggleOrderedList,
+      icon: svg('octicon-list-ordered'),
+      title: 'Ordered List',
+    },
+    'image': {
+      action: EasyMDE.drawImage,
+      icon: svg('octicon-image'),
+      title: 'Image',
+    },
+    'table': {
+      action: EasyMDE.drawTable,
+      icon: svg('octicon-table'),
+      title: 'Table',
+    },
+    'horizontal-rule': {
+      action: EasyMDE.drawHorizontalRule,
+      icon: svg('octicon-horizontal-rule'),
+      title: 'Horizontal Rule',
+    },
+    'preview': {
+      action: EasyMDE.togglePreview,
+      icon: svg('octicon-eye'),
+      title: 'Preview',
+    },
+    'fullscreen': {
+      action: EasyMDE.toggleFullScreen,
+      icon: svg('octicon-screen-full'),
+      title: 'Fullscreen',
+    },
+    'side-by-side': {
+      action: EasyMDE.toggleSideBySide,
+      icon: svg('octicon-columns'),
+      title: 'Side by Side',
+    },
+
+    // Forgejo custom actions
+    'gitea-checkbox-empty': {
+      action(e) {
+        const cm = e.codemirror;
+        cm.replaceSelection(`\n- [ ] ${cm.getSelection()}`);
+        cm.focus();
+      },
+      icon: svg('gitea-empty-checkbox'),
+      title: 'Add Checkbox (empty)',
+    },
+    'gitea-checkbox-checked': {
+      action(e) {
+        const cm = e.codemirror;
+        cm.replaceSelection(`\n- [x] ${cm.getSelection()}`);
+        cm.focus();
+      },
+      icon: svg('octicon-checkbox'),
+      title: 'Add Checkbox (checked)',
+    },
+    'gitea-switch-to-textarea': {
+      action: () => {
+        editor.userPreferredEditor = 'textarea';
+        editor.switchToTextarea();
+      },
+      icon: svg('octicon-arrow-switch'),
+      title: 'Revert to simple textarea',
+    },
+    'gitea-code-inline': {
+      action(e) {
+        const cm = e.codemirror;
+        const selection = cm.getSelection();
+        cm.replaceSelection(`\`${selection}\``);
+        if (!selection) {
+          const cursorPos = cm.getCursor();
+          cm.setCursor(cursorPos.line, cursorPos.ch - 1);
+        }
+        cm.focus();
+      },
+      icon: svg('octicon-chevron-right'),
+      title: 'Add Inline Code',
+    },
+  };
+
+  for (const [key, value] of Object.entries(actions)) {
+    if (typeof value !== 'string') {
+      value.name = key;
+    }
+  }
+
+  return actions;
+}
diff --git a/web_src/js/features/comp/LabelEdit.js b/web_src/js/features/comp/LabelEdit.js
new file mode 100644
index 00000000..2cc75cc6
--- /dev/null
+++ b/web_src/js/features/comp/LabelEdit.js
@@ -0,0 +1,96 @@
+import $ from 'jquery';
+
+function isExclusiveScopeName(name) {
+  return /.*[^/]\/[^/].*/.test(name);
+}
+
+function updateExclusiveLabelEdit(form) {
+  const nameInput = document.querySelector(`${form} .label-name-input`);
+  const exclusiveField = document.querySelector(`${form} .label-exclusive-input-field`);
+  const exclusiveCheckbox = document.querySelector(`${form} .label-exclusive-input`);
+  const exclusiveWarning = document.querySelector(`${form} .label-exclusive-warning`);
+
+  if (isExclusiveScopeName(nameInput.value)) {
+    exclusiveField?.classList.remove('muted');
+    exclusiveField?.removeAttribute('aria-disabled');
+    if (exclusiveCheckbox.checked && exclusiveCheckbox.getAttribute('data-exclusive-warn')) {
+      exclusiveWarning?.classList.remove('tw-hidden');
+    } else {
+      exclusiveWarning?.classList.add('tw-hidden');
+    }
+  } else {
+    exclusiveField?.classList.add('muted');
+    exclusiveField?.setAttribute('aria-disabled', 'true');
+    exclusiveWarning?.classList.add('tw-hidden');
+  }
+}
+
+export function initCompLabelEdit(selector) {
+  if (!$(selector).length) return;
+
+  // Create label
+  $('.new-label.button').on('click', () => {
+    updateExclusiveLabelEdit('.new-label');
+    $('.new-label.modal').modal({
+      onApprove() {
+        const form = document.querySelector('.new-label.form');
+        if (!form.checkValidity()) {
+          form.reportValidity();
+          return false;
+        }
+        $('.new-label.form').trigger('submit');
+      },
+    }).modal('show');
+    return false;
+  });
+
+  // Edit label
+  $('.edit-label-button').on('click', function () {
+    $('#label-modal-id').val($(this).data('id'));
+
+    const $nameInput = $('.edit-label .label-name-input');
+    $nameInput.val($(this).data('title'));
+
+    const $isArchivedCheckbox = $('.edit-label .label-is-archived-input');
+    $isArchivedCheckbox[0].checked = this.hasAttribute('data-is-archived');
+
+    const $exclusiveCheckbox = $('.edit-label .label-exclusive-input');
+    $exclusiveCheckbox[0].checked = this.hasAttribute('data-exclusive');
+    // Warn when label was previously not exclusive and used in issues
+    $exclusiveCheckbox.data('exclusive-warn',
+      $(this).data('num-issues') > 0 &&
+      (!this.hasAttribute('data-exclusive') || !isExclusiveScopeName($nameInput.val())));
+    updateExclusiveLabelEdit('.edit-label');
+
+    $('.edit-label .label-desc-input').val(this.getAttribute('data-description'));
+
+    const colorInput = document.querySelector('.edit-label .js-color-picker-input input');
+    colorInput.value = this.getAttribute('data-color');
+    colorInput.dispatchEvent(new Event('input', {bubbles: true}));
+
+    $('.edit-label.modal').modal({
+      onApprove() {
+        const form = document.querySelector('.edit-label.form');
+        if (!form.checkValidity()) {
+          form.reportValidity();
+          return false;
+        }
+        $('.edit-label.form').trigger('submit');
+      },
+    }).modal('show');
+    return false;
+  });
+
+  $('.new-label .label-name-input').on('input', () => {
+    updateExclusiveLabelEdit('.new-label');
+  });
+  $('.new-label .label-exclusive-input').on('change', () => {
+    updateExclusiveLabelEdit('.new-label');
+  });
+  $('.edit-label .label-name-input').on('input', () => {
+    updateExclusiveLabelEdit('.edit-label');
+  });
+  $('.edit-label .label-exclusive-input').on('change', () => {
+    updateExclusiveLabelEdit('.edit-label');
+  });
+}
diff --git a/web_src/js/features/comp/Paste.js b/web_src/js/features/comp/Paste.js
new file mode 100644
index 00000000..aab6997a
--- /dev/null
+++ b/web_src/js/features/comp/Paste.js
@@ -0,0 +1,144 @@
+import {POST} from '../../modules/fetch.js';
+import {getPastedContent, replaceTextareaSelection} from '../../utils/dom.js';
+import {isUrl} from '../../utils/url.js';
+
+async function uploadFile(file, uploadUrl) {
+  const formData = new FormData();
+  formData.append('file', file, file.name);
+
+  const res = await POST(uploadUrl, {data: formData});
+  return await res.json();
+}
+
+function triggerEditorContentChanged(target) {
+  target.dispatchEvent(new CustomEvent('ce-editor-content-changed', {bubbles: true}));
+}
+
+class TextareaEditor {
+  constructor(editor) {
+    this.editor = editor;
+  }
+
+  insertPlaceholder(value) {
+    const editor = this.editor;
+    const startPos = editor.selectionStart;
+    const endPos = editor.selectionEnd;
+    editor.value = editor.value.substring(0, startPos) + value + editor.value.substring(endPos);
+    editor.selectionStart = startPos;
+    editor.selectionEnd = startPos + value.length;
+    editor.focus();
+    triggerEditorContentChanged(editor);
+  }
+
+  replacePlaceholder(oldVal, newVal) {
+    const editor = this.editor;
+    const startPos = editor.selectionStart;
+    const endPos = editor.selectionEnd;
+    if (editor.value.substring(startPos, endPos) === oldVal) {
+      editor.value = editor.value.substring(0, startPos) + newVal + editor.value.substring(endPos);
+      editor.selectionEnd = startPos + newVal.length;
+    } else {
+      editor.value = editor.value.replace(oldVal, newVal);
+      editor.selectionEnd -= oldVal.length;
+      editor.selectionEnd += newVal.length;
+    }
+    editor.selectionStart = editor.selectionEnd;
+    editor.focus();
+    triggerEditorContentChanged(editor);
+  }
+}
+
+class CodeMirrorEditor {
+  constructor(editor) {
+    this.editor = editor;
+  }
+
+  insertPlaceholder(value) {
+    const editor = this.editor;
+    const startPoint = editor.getCursor('start');
+    const endPoint = editor.getCursor('end');
+    editor.replaceSelection(value);
+    endPoint.ch = startPoint.ch + value.length;
+    editor.setSelection(startPoint, endPoint);
+    editor.focus();
+    triggerEditorContentChanged(editor.getTextArea());
+  }
+
+  replacePlaceholder(oldVal, newVal) {
+    const editor = this.editor;
+    const endPoint = editor.getCursor('end');
+    if (editor.getSelection() === oldVal) {
+      editor.replaceSelection(newVal);
+    } else {
+      editor.setValue(editor.getValue().replace(oldVal, newVal));
+    }
+    endPoint.ch -= oldVal.length;
+    endPoint.ch += newVal.length;
+    editor.setSelection(endPoint, endPoint);
+    editor.focus();
+    triggerEditorContentChanged(editor.getTextArea());
+  }
+}
+
+async function handleClipboardImages(editor, dropzone, images, e) {
+  const uploadUrl = dropzone.getAttribute('data-upload-url');
+  const filesContainer = dropzone.querySelector('.files');
+
+  if (!dropzone || !uploadUrl || !filesContainer || !images.length) return;
+
+  e.preventDefault();
+  e.stopPropagation();
+
+  for (const img of images) {
+    const name = img.name.slice(0, img.name.lastIndexOf('.'));
+
+    const placeholder = `![${name}](uploading ...)`;
+    editor.insertPlaceholder(placeholder);
+
+    const {uuid} = await uploadFile(img, uploadUrl);
+
+    const url = `/attachments/${uuid}`;
+    const text = `![${name}](${url})`;
+    editor.replacePlaceholder(placeholder, text);
+
+    const input = document.createElement('input');
+    input.setAttribute('name', 'files');
+    input.setAttribute('type', 'hidden');
+    input.setAttribute('id', uuid);
+    input.value = uuid;
+    filesContainer.append(input);
+  }
+}
+
+function handleClipboardText(textarea, text, e) {
+  // when pasting links over selected text, turn it into [text](link), except when shift key is held
+  const {value, selectionStart, selectionEnd, _shiftDown} = textarea;
+  if (_shiftDown) return;
+  const selectedText = value.substring(selectionStart, selectionEnd);
+  const trimmedText = text.trim();
+  if (selectedText && isUrl(trimmedText)) {
+    e.stopPropagation();
+    e.preventDefault();
+    replaceTextareaSelection(textarea, `[${selectedText}](${trimmedText})`);
+  }
+}
+
+export function initEasyMDEPaste(easyMDE, dropzone) {
+  easyMDE.codemirror.on('paste', (_, e) => {
+    const {images} = getPastedContent(e);
+    if (images.length) {
+      handleClipboardImages(new CodeMirrorEditor(easyMDE.codemirror), dropzone, images, e);
+    }
+  });
+}
+
+export function initTextareaPaste(textarea, dropzone) {
+  textarea.addEventListener('paste', (e) => {
+    const {images, text} = getPastedContent(e);
+    if (images.length) {
+      handleClipboardImages(new TextareaEditor(textarea), dropzone, images, e);
+    } else if (text) {
+      handleClipboardText(textarea, text, e);
+    }
+  });
+}
diff --git a/web_src/js/features/comp/QuickSubmit.js b/web_src/js/features/comp/QuickSubmit.js
new file mode 100644
index 00000000..e6d7080b
--- /dev/null
+++ b/web_src/js/features/comp/QuickSubmit.js
@@ -0,0 +1,17 @@
+export function handleGlobalEnterQuickSubmit(target) {
+  const form = target.closest('form');
+  if (form) {
+    if (!form.checkValidity()) {
+      form.reportValidity();
+      return;
+    }
+
+    // here use the event to trigger the submit event (instead of calling `submit()` method directly)
+    // otherwise the `areYouSure` handler won't be executed, then there will be an annoying "confirm to leave" dialog
+    form.dispatchEvent(new SubmitEvent('submit', {bubbles: true, cancelable: true}));
+  } else {
+    // if no form, then the editor is for an AJAX request, dispatch an event to the target, let the target's event handler to do the AJAX request.
+    // the 'ce-' prefix means this is a CustomEvent
+    target.dispatchEvent(new CustomEvent('ce-quick-submit', {bubbles: true}));
+  }
+}
diff --git a/web_src/js/features/comp/ReactionSelector.js b/web_src/js/features/comp/ReactionSelector.js
new file mode 100644
index 00000000..fd4601fb
--- /dev/null
+++ b/web_src/js/features/comp/ReactionSelector.js
@@ -0,0 +1,38 @@
+import $ from 'jquery';
+import {POST} from '../../modules/fetch.js';
+
+export function initCompReactionSelector($parent) {
+  $parent.find(`.select-reaction .item.reaction, .comment-reaction-button`).on('click', async function (e) {
+    e.preventDefault();
+
+    if (this.classList.contains('disabled')) return;
+
+    const actionUrl = this.closest('[data-action-url]')?.getAttribute('data-action-url');
+    const reactionContent = this.getAttribute('data-reaction-content');
+    const hasReacted = this.closest('.comment')?.querySelector(`.ui.segment.reactions a[data-reaction-content="${reactionContent}"]`)?.getAttribute('data-has-reacted') === 'true';
+
+    const res = await POST(`${actionUrl}/${hasReacted ? 'unreact' : 'react'}`, {
+      data: new URLSearchParams({content: reactionContent}),
+    });
+
+    const data = await res.json();
+    if (data && (data.html || data.empty)) {
+      const $content = $(this).closest('.content');
+      let $react = $content.find('.segment.reactions');
+      if ((!data.empty || data.html === '') && $react.length > 0) {
+        $react.remove();
+      }
+      if (!data.empty) {
+        const $attachments = $content.find('.segment.bottom:first');
+        $react = $(data.html);
+        if ($attachments.length > 0) {
+          $react.insertBefore($attachments);
+        } else {
+          $react.appendTo($content);
+        }
+        $react.find('.dropdown').dropdown();
+        initCompReactionSelector($react);
+      }
+    }
+  });
+}
diff --git a/web_src/js/features/comp/SearchUserBox.js b/web_src/js/features/comp/SearchUserBox.js
new file mode 100644
index 00000000..081c4742
--- /dev/null
+++ b/web_src/js/features/comp/SearchUserBox.js
@@ -0,0 +1,51 @@
+import $ from 'jquery';
+import {htmlEscape} from 'escape-goat';
+
+const {appSubUrl} = window.config;
+const looksLikeEmailAddressCheck = /^\S+@\S+$/;
+
+export function initCompSearchUserBox() {
+  const searchUserBox = document.getElementById('search-user-box');
+  if (!searchUserBox) return;
+
+  const $searchUserBox = $(searchUserBox);
+  const allowEmailInput = searchUserBox.getAttribute('data-allow-email') === 'true';
+  const allowEmailDescription = searchUserBox.getAttribute('data-allow-email-description') ?? undefined;
+  $searchUserBox.search({
+    minCharacters: 2,
+    apiSettings: {
+      url: `${appSubUrl}/user/search?active=1&q={query}`,
+      onResponse(response) {
+        const items = [];
+        const searchQuery = $searchUserBox.find('input').val();
+        const searchQueryUppercase = searchQuery.toUpperCase();
+        $.each(response.data, (_i, item) => {
+          const resultItem = {
+            title: item.login,
+            image: item.avatar_url,
+          };
+          if (item.full_name) {
+            resultItem.description = htmlEscape(item.full_name);
+          }
+          if (searchQueryUppercase === item.login.toUpperCase()) {
+            items.unshift(resultItem);
+          } else {
+            items.push(resultItem);
+          }
+        });
+
+        if (allowEmailInput && !items.length && looksLikeEmailAddressCheck.test(searchQuery)) {
+          const resultItem = {
+            title: searchQuery,
+            description: allowEmailDescription,
+          };
+          items.push(resultItem);
+        }
+
+        return {results: items};
+      },
+    },
+    searchFields: ['login', 'full_name'],
+    showNoResults: false,
+  });
+}
diff --git a/web_src/js/features/comp/TextExpander.js b/web_src/js/features/comp/TextExpander.js
new file mode 100644
index 00000000..128a2ddf
--- /dev/null
+++ b/web_src/js/features/comp/TextExpander.js
@@ -0,0 +1,61 @@
+import {matchEmoji, matchMention} from '../../utils/match.js';
+import {emojiString} from '../emoji.js';
+
+export function initTextExpander(expander) {
+  expander?.addEventListener('text-expander-change', ({detail: {key, provide, text}}) => {
+    if (key === ':') {
+      const matches = matchEmoji(text);
+      if (!matches.length) return provide({matched: false});
+
+      const ul = document.createElement('ul');
+      ul.classList.add('suggestions');
+      for (const name of matches) {
+        const emoji = emojiString(name);
+        const li = document.createElement('li');
+        li.setAttribute('role', 'option');
+        li.setAttribute('data-value', emoji);
+        li.textContent = `${emoji} ${name}`;
+        ul.append(li);
+      }
+
+      provide({matched: true, fragment: ul});
+    } else if (key === '@') {
+      const matches = matchMention(text);
+      if (!matches.length) return provide({matched: false});
+
+      const ul = document.createElement('ul');
+      ul.classList.add('suggestions');
+      for (const {value, name, fullname, avatar} of matches) {
+        const li = document.createElement('li');
+        li.setAttribute('role', 'option');
+        li.setAttribute('data-value', `${key}${value}`);
+
+        const img = document.createElement('img');
+        img.src = avatar;
+        li.append(img);
+
+        const nameSpan = document.createElement('span');
+        nameSpan.textContent = name;
+        li.append(nameSpan);
+
+        if (fullname && fullname.toLowerCase() !== name) {
+          const fullnameSpan = document.createElement('span');
+          fullnameSpan.classList.add('fullname');
+          fullnameSpan.textContent = fullname;
+          li.append(fullnameSpan);
+        }
+
+        ul.append(li);
+      }
+
+      provide({matched: true, fragment: ul});
+    }
+  });
+  expander?.addEventListener('text-expander-value', ({detail}) => {
+    if (detail?.item) {
+      // add a space after @mentions as it's likely the user wants one
+      const suffix = detail.key === '@' ? ' ' : '';
+      detail.value = `${detail.item.getAttribute('data-value')}${suffix}`;
+    }
+  });
+}
diff --git a/web_src/js/features/comp/WebHookEditor.js b/web_src/js/features/comp/WebHookEditor.js
new file mode 100644
index 00000000..d74b59fd
--- /dev/null
+++ b/web_src/js/features/comp/WebHookEditor.js
@@ -0,0 +1,44 @@
+import {POST} from '../../modules/fetch.js';
+import {hideElem, showElem, toggleElem} from '../../utils/dom.js';
+
+export function initCompWebHookEditor() {
+  if (!document.querySelectorAll('.new.webhook').length) {
+    return;
+  }
+
+  for (const input of document.querySelectorAll('.events.checkbox input')) {
+    input.addEventListener('change', function () {
+      if (this.checked) {
+        showElem('.events.fields');
+      }
+    });
+  }
+
+  for (const input of document.querySelectorAll('.non-events.checkbox input')) {
+    input.addEventListener('change', function () {
+      if (this.checked) {
+        hideElem('.events.fields');
+      }
+    });
+  }
+
+  // some webhooks (like Gitea) allow to set the request method (GET/POST), and it would toggle the "Content Type" field
+  const httpMethodInput = document.getElementById('http_method');
+  if (httpMethodInput) {
+    const updateContentType = function () {
+      const visible = httpMethodInput.value === 'POST';
+      toggleElem(document.getElementById('content_type').closest('.field'), visible);
+    };
+    updateContentType();
+    httpMethodInput.addEventListener('change', updateContentType);
+  }
+
+  // Test delivery
+  document.getElementById('test-delivery')?.addEventListener('click', async function () {
+    this.classList.add('is-loading', 'disabled');
+    await POST(this.getAttribute('data-link'));
+    setTimeout(() => {
+      window.location.href = this.getAttribute('data-redirect');
+    }, 5000);
+  });
+}
diff --git a/web_src/js/features/contextpopup.js b/web_src/js/features/contextpopup.js
new file mode 100644
index 00000000..ce90f3e5
--- /dev/null
+++ b/web_src/js/features/contextpopup.js
@@ -0,0 +1,43 @@
+import {createApp} from 'vue';
+import ContextPopup from '../components/ContextPopup.vue';
+import {parseIssueHref} from '../utils.js';
+import {createTippy} from '../modules/tippy.js';
+
+export function initContextPopups() {
+  const refIssues = document.querySelectorAll('.ref-issue');
+  attachRefIssueContextPopup(refIssues);
+}
+
+export function attachRefIssueContextPopup(refIssues) {
+  for (const refIssue of refIssues) {
+    if (refIssue.classList.contains('ref-external-issue')) {
+      return;
+    }
+
+    const {owner, repo, index} = parseIssueHref(refIssue.getAttribute('href'));
+    if (!owner) return;
+
+    const el = document.createElement('div');
+    refIssue.parentNode.insertBefore(el, refIssue.nextSibling);
+
+    const view = createApp(ContextPopup);
+
+    try {
+      view.mount(el);
+    } catch (err) {
+      console.error(err);
+      el.textContent = 'ContextPopup failed to load';
+    }
+
+    createTippy(refIssue, {
+      content: el,
+      placement: 'top-start',
+      interactive: true,
+      role: 'dialog',
+      interactiveBorder: 5,
+      onShow: () => {
+        el.firstChild.dispatchEvent(new CustomEvent('ce-load-context-popup', {detail: {owner, repo, index}}));
+      },
+    });
+  }
+}
diff --git a/web_src/js/features/contributors.js b/web_src/js/features/contributors.js
new file mode 100644
index 00000000..79b3389f
--- /dev/null
+++ b/web_src/js/features/contributors.js
@@ -0,0 +1,29 @@
+import {createApp} from 'vue';
+
+export async function initRepoContributors() {
+  const el = document.getElementById('repo-contributors-chart');
+  if (!el) return;
+
+  const {default: RepoContributors} = await import(/* webpackChunkName: "contributors-graph" */'../components/RepoContributors.vue');
+  try {
+    const View = createApp(RepoContributors, {
+      repoLink: el.getAttribute('data-repo-link'),
+      locale: {
+        filterLabel: el.getAttribute('data-locale-filter-label'),
+        contributionType: {
+          commits: el.getAttribute('data-locale-contribution-type-commits'),
+          additions: el.getAttribute('data-locale-contribution-type-additions'),
+          deletions: el.getAttribute('data-locale-contribution-type-deletions'),
+        },
+
+        loadingTitle: el.getAttribute('data-locale-loading-title'),
+        loadingTitleFailed: el.getAttribute('data-locale-loading-title-failed'),
+        loadingInfo: el.getAttribute('data-locale-loading-info'),
+      },
+    });
+    View.mount(el);
+  } catch (err) {
+    console.error('RepoContributors failed to load', err);
+    el.textContent = el.getAttribute('data-locale-component-failed-to-load');
+  }
+}
diff --git a/web_src/js/features/copycontent.js b/web_src/js/features/copycontent.js
new file mode 100644
index 00000000..03efe007
--- /dev/null
+++ b/web_src/js/features/copycontent.js
@@ -0,0 +1,56 @@
+import {clippie} from 'clippie';
+import {showTemporaryTooltip} from '../modules/tippy.js';
+import {convertImage} from '../utils.js';
+import {GET} from '../modules/fetch.js';
+
+const {i18n} = window.config;
+
+export function initCopyContent() {
+  const btn = document.getElementById('copy-content');
+  if (!btn || btn.classList.contains('disabled')) return;
+
+  btn.addEventListener('click', async () => {
+    if (btn.classList.contains('is-loading')) return;
+    let content;
+    let isRasterImage = false;
+    const link = btn.getAttribute('data-link');
+
+    // when data-link is present, we perform a fetch. this is either because
+    // the text to copy is not in the DOM or it is an image which should be
+    // fetched to copy in full resolution
+    if (link) {
+      btn.classList.add('is-loading', 'loading-icon-2px');
+      try {
+        const res = await GET(link, {credentials: 'include', redirect: 'follow'});
+        const contentType = res.headers.get('content-type');
+
+        if (contentType.startsWith('image/') && !contentType.startsWith('image/svg')) {
+          isRasterImage = true;
+          content = await res.blob();
+        } else {
+          content = await res.text();
+        }
+      } catch {
+        return showTemporaryTooltip(btn, i18n.copy_error);
+      } finally {
+        btn.classList.remove('is-loading', 'loading-icon-2px');
+      }
+    } else { // text, read from DOM
+      const lineEls = document.querySelectorAll('.file-view .lines-code');
+      content = Array.from(lineEls, (el) => el.textContent).join('');
+    }
+
+    // try copy original first, if that fails and it's an image, convert it to png
+    const success = await clippie(content);
+    if (success) {
+      showTemporaryTooltip(btn, i18n.copy_success);
+    } else {
+      if (isRasterImage) {
+        const success = await clippie(await convertImage(content, 'image/png'));
+        showTemporaryTooltip(btn, success ? i18n.copy_success : i18n.copy_error);
+      } else {
+        showTemporaryTooltip(btn, i18n.copy_error);
+      }
+    }
+  });
+}
diff --git a/web_src/js/features/dropzone.js b/web_src/js/features/dropzone.js
new file mode 100644
index 00000000..e7b8a9dd
--- /dev/null
+++ b/web_src/js/features/dropzone.js
@@ -0,0 +1,7 @@
+export async function createDropzone(el, opts) {
+  const [{Dropzone}] = await Promise.all([
+    import(/* webpackChunkName: "dropzone" */'dropzone'),
+    import(/* webpackChunkName: "dropzone" */'dropzone/dist/dropzone.css'),
+  ]);
+  return new Dropzone(el, opts);
+}
diff --git a/web_src/js/features/emoji.js b/web_src/js/features/emoji.js
new file mode 100644
index 00000000..032a3efe
--- /dev/null
+++ b/web_src/js/features/emoji.js
@@ -0,0 +1,38 @@
+import emojis from '../../../assets/emoji.json';
+
+const {assetUrlPrefix, customEmojis} = window.config;
+
+const tempMap = {...customEmojis};
+for (const {emoji, aliases} of emojis) {
+  for (const alias of aliases || []) {
+    tempMap[alias] = emoji;
+  }
+}
+
+export const emojiKeys = Object.keys(tempMap).sort((a, b) => {
+  if (a === '+1' || a === '-1') return -1;
+  if (b === '+1' || b === '-1') return 1;
+  return a.localeCompare(b);
+});
+
+const emojiMap = {};
+for (const key of emojiKeys) {
+  emojiMap[key] = tempMap[key];
+}
+
+// retrieve HTML for given emoji name
+export function emojiHTML(name) {
+  let inner;
+  if (Object.hasOwn(customEmojis, name)) {
+    inner = `<img alt=":${name}:" src="${assetUrlPrefix}/img/emoji/${name}.png">`;
+  } else {
+    inner = emojiString(name);
+  }
+
+  return `<span class="emoji" title=":${name}:">${inner}</span>`;
+}
+
+// retrieve string for given emoji name
+export function emojiString(name) {
+  return emojiMap[name] || `:${name}:`;
+}
diff --git a/web_src/js/features/eventsource.sharedworker.js b/web_src/js/features/eventsource.sharedworker.js
new file mode 100644
index 00000000..62581cf6
--- /dev/null
+++ b/web_src/js/features/eventsource.sharedworker.js
@@ -0,0 +1,141 @@
+const sourcesByUrl = {};
+const sourcesByPort = {};
+
+class Source {
+  constructor(url) {
+    this.url = url;
+    this.eventSource = new EventSource(url);
+    this.listening = {};
+    this.clients = [];
+    this.listen('open');
+    this.listen('close');
+    this.listen('logout');
+    this.listen('notification-count');
+    this.listen('stopwatches');
+    this.listen('error');
+  }
+
+  register(port) {
+    if (this.clients.includes(port)) return;
+
+    this.clients.push(port);
+
+    port.postMessage({
+      type: 'status',
+      message: `registered to ${this.url}`,
+    });
+  }
+
+  deregister(port) {
+    const portIdx = this.clients.indexOf(port);
+    if (portIdx < 0) {
+      return this.clients.length;
+    }
+    this.clients.splice(portIdx, 1);
+    return this.clients.length;
+  }
+
+  close() {
+    if (!this.eventSource) return;
+
+    this.eventSource.close();
+    this.eventSource = null;
+  }
+
+  listen(eventType) {
+    if (this.listening[eventType]) return;
+    this.listening[eventType] = true;
+    this.eventSource.addEventListener(eventType, (event) => {
+      this.notifyClients({
+        type: eventType,
+        data: event.data,
+      });
+    });
+  }
+
+  notifyClients(event) {
+    for (const client of this.clients) {
+      client.postMessage(event);
+    }
+  }
+
+  status(port) {
+    port.postMessage({
+      type: 'status',
+      message: `url: ${this.url} readyState: ${this.eventSource.readyState}`,
+    });
+  }
+}
+
+self.addEventListener('connect', (e) => {
+  for (const port of e.ports) {
+    port.addEventListener('message', (event) => {
+      if (!self.EventSource) {
+        // some browsers (like PaleMoon, Firefox<53) don't support EventSource in SharedWorkerGlobalScope.
+        // this event handler needs EventSource when doing "new Source(url)", so just post a message back to the caller,
+        // in case the caller would like to use a fallback method to do its work.
+        port.postMessage({type: 'no-event-source'});
+        return;
+      }
+      if (event.data.type === 'start') {
+        const url = event.data.url;
+        if (sourcesByUrl[url]) {
+          // we have a Source registered to this url
+          const source = sourcesByUrl[url];
+          source.register(port);
+          sourcesByPort[port] = source;
+          return;
+        }
+        let source = sourcesByPort[port];
+        if (source) {
+          if (source.eventSource && source.url === url) return;
+
+          // How this has happened I don't understand...
+          // deregister from that source
+          const count = source.deregister(port);
+          // Clean-up
+          if (count === 0) {
+            source.close();
+            sourcesByUrl[source.url] = null;
+          }
+        }
+        // Create a new Source
+        source = new Source(url);
+        source.register(port);
+        sourcesByUrl[url] = source;
+        sourcesByPort[port] = source;
+      } else if (event.data.type === 'listen') {
+        const source = sourcesByPort[port];
+        source.listen(event.data.eventType);
+      } else if (event.data.type === 'close') {
+        const source = sourcesByPort[port];
+
+        if (!source) return;
+
+        const count = source.deregister(port);
+        if (count === 0) {
+          source.close();
+          sourcesByUrl[source.url] = null;
+          sourcesByPort[port] = null;
+        }
+      } else if (event.data.type === 'status') {
+        const source = sourcesByPort[port];
+        if (!source) {
+          port.postMessage({
+            type: 'status',
+            message: 'not connected',
+          });
+          return;
+        }
+        source.status(port);
+      } else {
+        // just send it back
+        port.postMessage({
+          type: 'error',
+          message: `received but don't know how to handle: ${event.data}`,
+        });
+      }
+    });
+    port.start();
+  }
+});
diff --git a/web_src/js/features/file-fold.js b/web_src/js/features/file-fold.js
new file mode 100644
index 00000000..3efefaf3
--- /dev/null
+++ b/web_src/js/features/file-fold.js
@@ -0,0 +1,19 @@
+import {svg} from '../svg.js';
+
+// Hides the file if newFold is true, and shows it otherwise. The actual hiding is performed using CSS.
+//
+// The fold arrow is the icon displayed on the upper left of the file box, especially intended for components having the 'fold-file' class.
+// The file content box is the box that should be hidden or shown, especially intended for components having the 'file-content' class.
+//
+export function setFileFolding(fileContentBox, foldArrow, newFold) {
+  foldArrow.innerHTML = svg(`octicon-chevron-${newFold ? 'right' : 'down'}`, 18);
+  fileContentBox.setAttribute('data-folded', newFold);
+  if (newFold && fileContentBox.getBoundingClientRect().top < 0) {
+    fileContentBox.scrollIntoView();
+  }
+}
+
+// Like `setFileFolding`, except that it automatically inverts the current file folding state.
+export function invertFileFolding(fileContentBox, foldArrow) {
+  setFileFolding(fileContentBox, foldArrow, fileContentBox.getAttribute('data-folded') !== 'true');
+}
diff --git a/web_src/js/features/heatmap.js b/web_src/js/features/heatmap.js
new file mode 100644
index 00000000..688f06c2
--- /dev/null
+++ b/web_src/js/features/heatmap.js
@@ -0,0 +1,40 @@
+import {createApp} from 'vue';
+import ActivityHeatmap from '../components/ActivityHeatmap.vue';
+import {translateMonth, translateDay} from '../utils.js';
+
+export function initHeatmap() {
+  const el = document.getElementById('user-heatmap');
+  if (!el) return;
+
+  try {
+    const heatmap = {};
+    for (const {contributions, timestamp} of JSON.parse(el.getAttribute('data-heatmap-data'))) {
+      // Convert to user timezone and sum contributions by date
+      const dateStr = new Date(timestamp * 1000).toDateString();
+      heatmap[dateStr] = (heatmap[dateStr] || 0) + contributions;
+    }
+
+    const values = Object.keys(heatmap).map((v) => {
+      return {date: new Date(v), count: heatmap[v]};
+    });
+
+    const locale = {
+      months: new Array(12).fill().map((_, idx) => translateMonth(idx)),
+      days: new Array(7).fill().map((_, idx) => translateDay(idx)),
+      contributions_in_the_last_12_months: el.getAttribute('data-locale-total-contributions'),
+      contributions_zero: el.getAttribute('data-locale-contributions-zero'),
+      contributions_format: el.getAttribute('data-locale-contributions-format'),
+      contributions_one: el.getAttribute('data-locale-contributions-one'),
+      contributions_few: el.getAttribute('data-locale-contributions-few'),
+      more: el.getAttribute('data-locale-more'),
+      less: el.getAttribute('data-locale-less'),
+    };
+
+    const View = createApp(ActivityHeatmap, {values, locale});
+    View.mount(el);
+    el.classList.remove('is-loading');
+  } catch (err) {
+    console.error('Heatmap failed to load', err);
+    el.textContent = 'Heatmap failed to load';
+  }
+}
diff --git a/web_src/js/features/imagediff.js b/web_src/js/features/imagediff.js
new file mode 100644
index 00000000..d1b139ff
--- /dev/null
+++ b/web_src/js/features/imagediff.js
@@ -0,0 +1,271 @@
+import $ from 'jquery';
+import {GET} from '../modules/fetch.js';
+import {hideElem, loadElem, queryElemChildren} from '../utils/dom.js';
+import {parseDom} from '../utils.js';
+
+function getDefaultSvgBoundsIfUndefined(text, src) {
+  const DefaultSize = 300;
+  const MaxSize = 99999;
+
+  const svgDoc = parseDom(text, 'image/svg+xml');
+  const svg = svgDoc.documentElement;
+  const width = svg?.width?.baseVal;
+  const height = svg?.height?.baseVal;
+  if (width === undefined || height === undefined) {
+    return null; // in case some svg is invalid or doesn't have the width/height
+  }
+  if (width.unitType === SVGLength.SVG_LENGTHTYPE_PERCENTAGE || height.unitType === SVGLength.SVG_LENGTHTYPE_PERCENTAGE) {
+    const img = new Image();
+    img.src = src;
+    if (img.width > 1 && img.width < MaxSize && img.height > 1 && img.height < MaxSize) {
+      return {
+        width: img.width,
+        height: img.height,
+      };
+    }
+    if (svg.hasAttribute('viewBox')) {
+      const viewBox = svg.viewBox.baseVal;
+      return {
+        width: DefaultSize,
+        height: DefaultSize * viewBox.width / viewBox.height,
+      };
+    }
+    return {
+      width: DefaultSize,
+      height: DefaultSize,
+    };
+  }
+  return null;
+}
+
+function createContext(imageAfter, imageBefore) {
+  const sizeAfter = {
+    width: imageAfter?.width || 0,
+    height: imageAfter?.height || 0,
+  };
+  const sizeBefore = {
+    width: imageBefore?.width || 0,
+    height: imageBefore?.height || 0,
+  };
+  const maxSize = {
+    width: Math.max(sizeBefore.width, sizeAfter.width),
+    height: Math.max(sizeBefore.height, sizeAfter.height),
+  };
+
+  return {
+    imageAfter,
+    imageBefore,
+    sizeAfter,
+    sizeBefore,
+    maxSize,
+    ratio: [
+      Math.floor(maxSize.width - sizeAfter.width) / 2,
+      Math.floor(maxSize.height - sizeAfter.height) / 2,
+      Math.floor(maxSize.width - sizeBefore.width) / 2,
+      Math.floor(maxSize.height - sizeBefore.height) / 2,
+    ],
+  };
+}
+
+export function initImageDiff() {
+  $('.image-diff:not([data-image-diff-loaded])').each(async function() {
+    const $container = $(this);
+    this.setAttribute('data-image-diff-loaded', 'true');
+
+    // the container may be hidden by "viewed" checkbox, so use the parent's width for reference
+    const diffContainerWidth = Math.max($container.closest('.diff-file-box').width() - 300, 100);
+
+    const imageInfos = [{
+      path: this.getAttribute('data-path-after'),
+      mime: this.getAttribute('data-mime-after'),
+      $images: $container.find('img.image-after'), // matches 3 <img>
+      $boundsInfo: $container.find('.bounds-info-after'),
+    }, {
+      path: this.getAttribute('data-path-before'),
+      mime: this.getAttribute('data-mime-before'),
+      $images: $container.find('img.image-before'), // matches 3 <img>
+      $boundsInfo: $container.find('.bounds-info-before'),
+    }];
+
+    await Promise.all(imageInfos.map(async (info) => {
+      const [success] = await Promise.all(Array.from(info.$images, (img) => {
+        return loadElem(img, info.path);
+      }));
+      // only the first images is associated with $boundsInfo
+      if (!success) info.$boundsInfo.text('(image error)');
+      if (info.mime === 'image/svg+xml') {
+        const resp = await GET(info.path);
+        const text = await resp.text();
+        const bounds = getDefaultSvgBoundsIfUndefined(text, info.path);
+        if (bounds) {
+          info.$images.each(function() {
+            this.setAttribute('width', bounds.width);
+            this.setAttribute('height', bounds.height);
+          });
+          hideElem(info.$boundsInfo);
+        }
+      }
+    }));
+
+    const $imagesAfter = imageInfos[0].$images;
+    const $imagesBefore = imageInfos[1].$images;
+
+    initSideBySide(this, createContext($imagesAfter[0], $imagesBefore[0]));
+    if ($imagesAfter.length > 0 && $imagesBefore.length > 0) {
+      initSwipe(createContext($imagesAfter[1], $imagesBefore[1]));
+      initOverlay(createContext($imagesAfter[2], $imagesBefore[2]));
+    }
+
+    queryElemChildren(this, '.image-diff-tabs', (el) => el.classList.remove('is-loading'));
+
+    function initSideBySide(container, sizes) {
+      let factor = 1;
+      if (sizes.maxSize.width > (diffContainerWidth - 24) / 2) {
+        factor = (diffContainerWidth - 24) / 2 / sizes.maxSize.width;
+      }
+
+      const widthChanged = sizes.imageAfter && sizes.imageBefore && sizes.imageAfter.naturalWidth !== sizes.imageBefore.naturalWidth;
+      const heightChanged = sizes.imageAfter && sizes.imageBefore && sizes.imageAfter.naturalHeight !== sizes.imageBefore.naturalHeight;
+      if (sizes.imageAfter) {
+        const boundsInfoAfterWidth = container.querySelector('.bounds-info-after .bounds-info-width');
+        if (boundsInfoAfterWidth) {
+          boundsInfoAfterWidth.textContent = `${sizes.imageAfter.naturalWidth}px`;
+          boundsInfoAfterWidth.classList.toggle('green', widthChanged);
+        }
+        const boundsInfoAfterHeight = container.querySelector('.bounds-info-after .bounds-info-height');
+        if (boundsInfoAfterHeight) {
+          boundsInfoAfterHeight.textContent = `${sizes.imageAfter.naturalHeight}px`;
+          boundsInfoAfterHeight.classList.toggle('green', heightChanged);
+        }
+      }
+
+      if (sizes.imageBefore) {
+        const boundsInfoBeforeWidth = container.querySelector('.bounds-info-before .bounds-info-width');
+        if (boundsInfoBeforeWidth) {
+          boundsInfoBeforeWidth.textContent = `${sizes.imageBefore.naturalWidth}px`;
+          boundsInfoBeforeWidth.classList.toggle('red', widthChanged);
+        }
+        const boundsInfoBeforeHeight = container.querySelector('.bounds-info-before .bounds-info-height');
+        if (boundsInfoBeforeHeight) {
+          boundsInfoBeforeHeight.textContent = `${sizes.imageBefore.naturalHeight}px`;
+          boundsInfoBeforeHeight.classList.add('red', heightChanged);
+        }
+      }
+
+      if (sizes.imageAfter) {
+        const container = sizes.imageAfter.parentNode;
+        sizes.imageAfter.style.width = `${sizes.sizeAfter.width * factor}px`;
+        sizes.imageAfter.style.height = `${sizes.sizeAfter.height * factor}px`;
+        container.style.margin = '10px auto';
+        container.style.width = `${sizes.sizeAfter.width * factor + 2}px`;
+        container.style.height = `${sizes.sizeAfter.height * factor + 2}px`;
+      }
+
+      if (sizes.imageBefore) {
+        const container = sizes.imageBefore.parentNode;
+        sizes.imageBefore.style.width = `${sizes.sizeBefore.width * factor}px`;
+        sizes.imageBefore.style.height = `${sizes.sizeBefore.height * factor}px`;
+        container.style.margin = '10px auto';
+        container.style.width = `${sizes.sizeBefore.width * factor + 2}px`;
+        container.style.height = `${sizes.sizeBefore.height * factor + 2}px`;
+      }
+    }
+
+    function initSwipe(sizes) {
+      let factor = 1;
+      if (sizes.maxSize.width > diffContainerWidth - 12) {
+        factor = (diffContainerWidth - 12) / sizes.maxSize.width;
+      }
+
+      if (sizes.imageAfter) {
+        const container = sizes.imageAfter.parentNode;
+        const swipeFrame = container.parentNode;
+        sizes.imageAfter.style.width = `${sizes.sizeAfter.width * factor}px`;
+        sizes.imageAfter.style.height = `${sizes.sizeAfter.height * factor}px`;
+        container.style.margin = `0px ${sizes.ratio[0] * factor}px`;
+        container.style.width = `${sizes.sizeAfter.width * factor + 2}px`;
+        container.style.height = `${sizes.sizeAfter.height * factor + 2}px`;
+        swipeFrame.style.padding = `${sizes.ratio[1] * factor}px 0 0 0`;
+        swipeFrame.style.width = `${sizes.maxSize.width * factor + 2}px`;
+      }
+
+      if (sizes.imageBefore) {
+        const container = sizes.imageBefore.parentNode;
+        const swipeFrame = container.parentNode;
+        sizes.imageBefore.style.width = `${sizes.sizeBefore.width * factor}px`;
+        sizes.imageBefore.style.height = `${sizes.sizeBefore.height * factor}px`;
+        container.style.margin = `${sizes.ratio[3] * factor}px ${sizes.ratio[2] * factor}px`;
+        container.style.width = `${sizes.sizeBefore.width * factor + 2}px`;
+        container.style.height = `${sizes.sizeBefore.height * factor + 2}px`;
+        swipeFrame.style.width = `${sizes.maxSize.width * factor + 2}px`;
+        swipeFrame.style.height = `${sizes.maxSize.height * factor + 2}px`;
+      }
+
+      // extra height for inner "position: absolute" elements
+      const swipe = $container.find('.diff-swipe')[0];
+      if (swipe) {
+        swipe.style.width = `${sizes.maxSize.width * factor + 2}px`;
+        swipe.style.height = `${sizes.maxSize.height * factor + 30}px`;
+      }
+
+      $container.find('.swipe-bar').on('mousedown', function(e) {
+        e.preventDefault();
+
+        const $swipeBar = $(this);
+        const $swipeFrame = $swipeBar.parent();
+        const width = $swipeFrame.width() - $swipeBar.width() - 2;
+
+        $(document).on('mousemove.diff-swipe', (e2) => {
+          e2.preventDefault();
+
+          const value = Math.max(0, Math.min(e2.clientX - $swipeFrame.offset().left, width));
+          $swipeBar[0].style.left = `${value}px`;
+          $container.find('.swipe-container')[0].style.width = `${$swipeFrame.width() - value}px`;
+
+          $(document).on('mouseup.diff-swipe', () => {
+            $(document).off('.diff-swipe');
+          });
+        });
+      });
+    }
+
+    function initOverlay(sizes) {
+      let factor = 1;
+      if (sizes.maxSize.width > diffContainerWidth - 12) {
+        factor = (diffContainerWidth - 12) / sizes.maxSize.width;
+      }
+
+      if (sizes.imageAfter) {
+        const container = sizes.imageAfter.parentNode;
+        sizes.imageAfter.style.width = `${sizes.sizeAfter.width * factor}px`;
+        sizes.imageAfter.style.height = `${sizes.sizeAfter.height * factor}px`;
+        container.style.margin = `${sizes.ratio[1] * factor}px ${sizes.ratio[0] * factor}px`;
+        container.style.width = `${sizes.sizeAfter.width * factor + 2}px`;
+        container.style.height = `${sizes.sizeAfter.height * factor + 2}px`;
+      }
+
+      if (sizes.imageBefore) {
+        const container = sizes.imageBefore.parentNode;
+        const overlayFrame = container.parentNode;
+        sizes.imageBefore.style.width = `${sizes.sizeBefore.width * factor}px`;
+        sizes.imageBefore.style.height = `${sizes.sizeBefore.height * factor}px`;
+        container.style.margin = `${sizes.ratio[3] * factor}px ${sizes.ratio[2] * factor}px`;
+        container.style.width = `${sizes.sizeBefore.width * factor + 2}px`;
+        container.style.height = `${sizes.sizeBefore.height * factor + 2}px`;
+
+        // some inner elements are `position: absolute`, so the container's height must be large enough
+        overlayFrame.style.width = `${sizes.maxSize.width * factor + 2}px`;
+        overlayFrame.style.height = `${sizes.maxSize.height * factor + 2}px`;
+      }
+
+      const rangeInput = $container[0].querySelector('input[type="range"]');
+      function updateOpacity() {
+        if (sizes.imageAfter) {
+          sizes.imageAfter.parentNode.style.opacity = `${rangeInput.value / 100}`;
+        }
+      }
+      rangeInput?.addEventListener('input', updateOpacity);
+      updateOpacity();
+    }
+  });
+}
diff --git a/web_src/js/features/install.js b/web_src/js/features/install.js
new file mode 100644
index 00000000..897f5fb4
--- /dev/null
+++ b/web_src/js/features/install.js
@@ -0,0 +1,119 @@
+import {hideElem, showElem} from '../utils/dom.js';
+import {GET} from '../modules/fetch.js';
+
+export function initInstall() {
+  const page = document.querySelector('.page-content.install');
+  if (!page) {
+    return;
+  }
+  if (page.classList.contains('post-install')) {
+    initPostInstall();
+  } else {
+    initPreInstall();
+  }
+}
+function initPreInstall() {
+  const defaultDbUser = 'forgejo';
+  const defaultDbName = 'forgejo';
+
+  const defaultDbHosts = {
+    mysql: '127.0.0.1:3306',
+    postgres: '127.0.0.1:5432',
+  };
+
+  const dbHost = document.getElementById('db_host');
+  const dbUser = document.getElementById('db_user');
+  const dbName = document.getElementById('db_name');
+
+  // Database type change detection.
+  document.getElementById('db_type').addEventListener('change', function () {
+    const dbType = this.value;
+    hideElem('div[data-db-setting-for]');
+    showElem(`div[data-db-setting-for=${dbType}]`);
+
+    if (dbType !== 'sqlite3') {
+      // for most remote database servers
+      showElem('div[data-db-setting-for=common-host]');
+      const lastDbHost = dbHost.value;
+      const isDbHostDefault = !lastDbHost || Object.values(defaultDbHosts).includes(lastDbHost);
+      if (isDbHostDefault) {
+        dbHost.value = defaultDbHosts[dbType] ?? '';
+      }
+      if (!dbUser.value && !dbName.value) {
+        dbUser.value = defaultDbUser;
+        dbName.value = defaultDbName;
+      }
+    } // else: for SQLite3, the default path is always prepared by backend code (setting)
+  });
+  document.getElementById('db_type').dispatchEvent(new Event('change'));
+
+  const appUrl = document.getElementById('app_url');
+  if (appUrl.value.includes('://localhost')) {
+    appUrl.value = window.location.href;
+  }
+
+  const domain = document.getElementById('domain');
+  if (domain.value.trim() === 'localhost') {
+    domain.value = window.location.hostname;
+  }
+
+  // TODO: better handling of exclusive relations.
+  document.querySelector('#offline-mode input').addEventListener('change', function () {
+    if (this.checked) {
+      document.querySelector('#disable-gravatar input').checked = true;
+      document.querySelector('#federated-avatar-lookup input').checked = false;
+    }
+  });
+  document.querySelector('#disable-gravatar input').addEventListener('change', function () {
+    if (this.checked) {
+      document.querySelector('#federated-avatar-lookup input').checked = false;
+    } else {
+      document.querySelector('#offline-mode input').checked = false;
+    }
+  });
+  document.querySelector('#federated-avatar-lookup input').addEventListener('change', function () {
+    if (this.checked) {
+      document.querySelector('#disable-gravatar input').checked = false;
+      document.querySelector('#offline-mode input').checked = false;
+    }
+  });
+  document.querySelector('#enable-openid-signin input').addEventListener('change', function () {
+    if (this.checked) {
+      if (!document.querySelector('#disable-registration input').checked) {
+        document.querySelector('#enable-openid-signup input').checked = true;
+      }
+    } else {
+      document.querySelector('#enable-openid-signup input').checked = false;
+    }
+  });
+  document.querySelector('#disable-registration input').addEventListener('change', function () {
+    if (this.checked) {
+      document.querySelector('#enable-captcha input').checked = false;
+      document.querySelector('#enable-openid-signup input').checked = false;
+    } else {
+      document.querySelector('#enable-openid-signup input').checked = true;
+    }
+  });
+  document.querySelector('#enable-captcha input').addEventListener('change', function () {
+    if (this.checked) {
+      document.querySelector('#disable-registration input').checked = false;
+    }
+  });
+}
+
+function initPostInstall() {
+  const el = document.getElementById('goto-user-login');
+  if (!el) return;
+
+  const targetUrl = el.getAttribute('href');
+  let tid = setInterval(async () => {
+    try {
+      const resp = await GET(targetUrl);
+      if (tid && resp.status === 200) {
+        clearInterval(tid);
+        tid = null;
+        window.location.href = targetUrl;
+      }
+    } catch {}
+  }, 1000);
+}
diff --git a/web_src/js/features/notification.js b/web_src/js/features/notification.js
new file mode 100644
index 00000000..b57df9ce
--- /dev/null
+++ b/web_src/js/features/notification.js
@@ -0,0 +1,192 @@
+import $ from 'jquery';
+import {GET} from '../modules/fetch.js';
+import {toggleElem} from '../utils/dom.js';
+
+const {appSubUrl, notificationSettings, assetVersionEncoded} = window.config;
+let notificationSequenceNumber = 0;
+
+export function initNotificationsTable() {
+  const table = document.getElementById('notification_table');
+  if (!table) return;
+
+  // when page restores from bfcache, delete previously clicked items
+  window.addEventListener('pageshow', (e) => {
+    if (e.persisted) { // page was restored from bfcache
+      const table = document.getElementById('notification_table');
+      const unreadCountEl = document.querySelector('.notifications-unread-count');
+      let unreadCount = parseInt(unreadCountEl.textContent);
+      for (const item of table.querySelectorAll('.notifications-item[data-remove="true"]')) {
+        item.remove();
+        unreadCount -= 1;
+      }
+      unreadCountEl.textContent = unreadCount;
+    }
+  });
+
+  // mark clicked unread links for deletion on bfcache restore
+  for (const link of table.querySelectorAll('.notifications-item[data-status="1"] .notifications-link')) {
+    link.addEventListener('click', (e) => {
+      e.target.closest('.notifications-item').setAttribute('data-remove', 'true');
+    });
+  }
+}
+
+async function receiveUpdateCount(event) {
+  try {
+    const data = JSON.parse(event.data);
+
+    for (const count of document.querySelectorAll('.notification_count')) {
+      count.classList.toggle('tw-hidden', data.Count === 0);
+      count.textContent = `${data.Count}`;
+    }
+    await updateNotificationTable();
+  } catch (error) {
+    console.error(error, event);
+  }
+}
+
+export function initNotificationCount() {
+  const $notificationCount = $('.notification_count');
+
+  if (!$notificationCount.length) {
+    return;
+  }
+
+  let usingPeriodicPoller = false;
+  const startPeriodicPoller = (timeout, lastCount) => {
+    if (timeout <= 0 || !Number.isFinite(timeout)) return;
+    usingPeriodicPoller = true;
+    lastCount = lastCount ?? $notificationCount.text();
+    setTimeout(async () => {
+      await updateNotificationCountWithCallback(startPeriodicPoller, timeout, lastCount);
+    }, timeout);
+  };
+
+  if (notificationSettings.EventSourceUpdateTime > 0 && window.EventSource && window.SharedWorker) {
+    // Try to connect to the event source via the shared worker first
+    const worker = new SharedWorker(`${__webpack_public_path__}js/eventsource.sharedworker.js?v=${assetVersionEncoded}`, 'notification-worker');
+    worker.addEventListener('error', (event) => {
+      console.error('worker error', event);
+    });
+    worker.port.addEventListener('messageerror', () => {
+      console.error('unable to deserialize message');
+    });
+    worker.port.postMessage({
+      type: 'start',
+      url: `${window.location.origin}${appSubUrl}/user/events`,
+    });
+    worker.port.addEventListener('message', (event) => {
+      if (!event.data || !event.data.type) {
+        console.error('unknown worker message event', event);
+        return;
+      }
+      if (event.data.type === 'notification-count') {
+        const _promise = receiveUpdateCount(event.data);
+      } else if (event.data.type === 'no-event-source') {
+        // browser doesn't support EventSource, falling back to periodic poller
+        if (!usingPeriodicPoller) startPeriodicPoller(notificationSettings.MinTimeout);
+      } else if (event.data.type === 'error') {
+        console.error('worker port event error', event.data);
+      } else if (event.data.type === 'logout') {
+        if (event.data.data !== 'here') {
+          return;
+        }
+        worker.port.postMessage({
+          type: 'close',
+        });
+        worker.port.close();
+        window.location.href = `${window.location.origin}${appSubUrl}/`;
+      } else if (event.data.type === 'close') {
+        worker.port.postMessage({
+          type: 'close',
+        });
+        worker.port.close();
+      }
+    });
+    worker.port.addEventListener('error', (e) => {
+      console.error('worker port error', e);
+    });
+    worker.port.start();
+    window.addEventListener('beforeunload', () => {
+      worker.port.postMessage({
+        type: 'close',
+      });
+      worker.port.close();
+    });
+
+    return;
+  }
+
+  startPeriodicPoller(notificationSettings.MinTimeout);
+}
+
+async function updateNotificationCountWithCallback(callback, timeout, lastCount) {
+  const currentCount = $('.notification_count').text();
+  if (lastCount !== currentCount) {
+    callback(notificationSettings.MinTimeout, currentCount);
+    return;
+  }
+
+  const newCount = await updateNotificationCount();
+  let needsUpdate = false;
+
+  if (lastCount !== newCount) {
+    needsUpdate = true;
+    timeout = notificationSettings.MinTimeout;
+  } else if (timeout < notificationSettings.MaxTimeout) {
+    timeout += notificationSettings.TimeoutStep;
+  }
+
+  callback(timeout, newCount);
+  if (needsUpdate) {
+    await updateNotificationTable();
+  }
+}
+
+async function updateNotificationTable() {
+  const notificationDiv = document.getElementById('notification_div');
+  if (notificationDiv) {
+    try {
+      const params = new URLSearchParams(window.location.search);
+      params.set('div-only', true);
+      params.set('sequence-number', ++notificationSequenceNumber);
+      const url = `${appSubUrl}/notifications?${params.toString()}`;
+      const response = await GET(url);
+
+      if (!response.ok) {
+        throw new Error('Failed to fetch notification table');
+      }
+
+      const data = await response.text();
+      if ($(data).data('sequence-number') === notificationSequenceNumber) {
+        notificationDiv.outerHTML = data;
+        initNotificationsTable();
+      }
+    } catch (error) {
+      console.error(error);
+    }
+  }
+}
+
+async function updateNotificationCount() {
+  try {
+    const response = await GET(`${appSubUrl}/notifications/new`);
+
+    if (!response.ok) {
+      throw new Error('Failed to fetch notification count');
+    }
+
+    const data = await response.json();
+
+    toggleElem('.notification_count', data.new !== 0);
+
+    for (const el of document.getElementsByClassName('notification_count')) {
+      el.textContent = `${data.new}`;
+    }
+
+    return `${data.new}`;
+  } catch (error) {
+    console.error(error);
+    return '0';
+  }
+}
diff --git a/web_src/js/features/org-team.js b/web_src/js/features/org-team.js
new file mode 100644
index 00000000..c216fdf6
--- /dev/null
+++ b/web_src/js/features/org-team.js
@@ -0,0 +1,39 @@
+import $ from 'jquery';
+import {hideElem, showElem} from '../utils/dom.js';
+
+const {appSubUrl} = window.config;
+
+export function initOrgTeamSettings() {
+  // Change team access mode
+  $('.organization.new.team input[name=permission]').on('change', () => {
+    const val = $('input[name=permission]:checked', '.organization.new.team').val();
+    if (val === 'admin') {
+      hideElem('.organization.new.team .team-units');
+    } else {
+      showElem('.organization.new.team .team-units');
+    }
+  });
+}
+
+export function initOrgTeamSearchRepoBox() {
+  const $searchRepoBox = $('#search-repo-box');
+  $searchRepoBox.search({
+    minCharacters: 2,
+    apiSettings: {
+      url: `${appSubUrl}/repo/search?q={query}&uid=${$searchRepoBox.data('uid')}`,
+      onResponse(response) {
+        const items = [];
+        $.each(response.data, (_i, item) => {
+          items.push({
+            title: item.repository.full_name.split('/')[1],
+            description: item.repository.full_name,
+          });
+        });
+
+        return {results: items};
+      },
+    },
+    searchFields: ['full_name'],
+    showNoResults: false,
+  });
+}
diff --git a/web_src/js/features/pull-view-file.js b/web_src/js/features/pull-view-file.js
new file mode 100644
index 00000000..2472e5a0
--- /dev/null
+++ b/web_src/js/features/pull-view-file.js
@@ -0,0 +1,96 @@
+import {diffTreeStore} from '../modules/stores.js';
+import {setFileFolding} from './file-fold.js';
+import {POST} from '../modules/fetch.js';
+
+const {pageData} = window.config;
+const prReview = pageData.prReview || {};
+const viewedStyleClass = 'viewed-file-checked-form';
+const viewedCheckboxSelector = '.viewed-file-form'; // Selector under which all "Viewed" checkbox forms can be found
+const expandFilesBtnSelector = '#expand-files-btn';
+const collapseFilesBtnSelector = '#collapse-files-btn';
+
+// Refreshes the summary of viewed files if present
+// The data used will be window.config.pageData.prReview.numberOf{Viewed}Files
+function refreshViewedFilesSummary() {
+  const viewedFilesProgress = document.getElementById('viewed-files-summary');
+  viewedFilesProgress?.setAttribute('value', prReview.numberOfViewedFiles);
+  const summaryLabel = document.getElementById('viewed-files-summary-label');
+  if (summaryLabel) summaryLabel.innerHTML = summaryLabel.getAttribute('data-text-changed-template')
+    .replace('%[1]d', prReview.numberOfViewedFiles)
+    .replace('%[2]d', prReview.numberOfFiles);
+}
+
+// Explicitly recounts how many files the user has currently reviewed by counting the number of checked "viewed" checkboxes
+// Additionally, the viewed files summary will be updated if it exists
+export function countAndUpdateViewedFiles() {
+  // The number of files is constant, but the number of viewed files can change because files can be loaded dynamically
+  prReview.numberOfViewedFiles = document.querySelectorAll(`${viewedCheckboxSelector} > input[type=checkbox][checked]`).length;
+  refreshViewedFilesSummary();
+}
+
+// Initializes a listener for all children of the given html element
+// (for example 'document' in the most basic case)
+// to watch for changes of viewed-file checkboxes
+export function initViewedCheckboxListenerFor() {
+  for (const form of document.querySelectorAll(`${viewedCheckboxSelector}:not([data-has-viewed-checkbox-listener="true"])`)) {
+    // To prevent double addition of listeners
+    form.setAttribute('data-has-viewed-checkbox-listener', true);
+
+    // The checkbox consists of a div containing the real checkbox with its label and the CSRF token,
+    // hence the actual checkbox first has to be found
+    const checkbox = form.querySelector('input[type=checkbox]');
+    checkbox.addEventListener('input', function() {
+      // Mark the file as viewed visually - will especially change the background
+      if (this.checked) {
+        form.classList.add(viewedStyleClass);
+        checkbox.setAttribute('checked', '');
+        prReview.numberOfViewedFiles++;
+      } else {
+        form.classList.remove(viewedStyleClass);
+        checkbox.removeAttribute('checked');
+        prReview.numberOfViewedFiles--;
+      }
+
+      // Update viewed-files summary and remove "has changed" label if present
+      refreshViewedFilesSummary();
+      const hasChangedLabel = form.parentNode.querySelector('.changed-since-last-review');
+      hasChangedLabel?.remove();
+
+      const fileName = checkbox.getAttribute('name');
+
+      // check if the file is in our difftreestore and if we find it -> change the IsViewed status
+      const fileInPageData = diffTreeStore().files.find((x) => x.Name === fileName);
+      if (fileInPageData) {
+        fileInPageData.IsViewed = this.checked;
+      }
+
+      // Unfortunately, actual forms cause too many problems, hence another approach is needed
+      const files = {};
+      files[fileName] = this.checked;
+      const data = {files};
+      const headCommitSHA = form.getAttribute('data-headcommit');
+      if (headCommitSHA) data.headCommitSHA = headCommitSHA;
+      POST(form.getAttribute('data-link'), {data});
+
+      // Fold the file accordingly
+      const parentBox = form.closest('.diff-file-header');
+      setFileFolding(parentBox.closest('.file-content'), parentBox.querySelector('.fold-file'), this.checked);
+    });
+  }
+}
+
+export function initExpandAndCollapseFilesButton() {
+  // expand btn
+  document.querySelector(expandFilesBtnSelector)?.addEventListener('click', () => {
+    for (const box of document.querySelectorAll('.file-content[data-folded="true"]')) {
+      setFileFolding(box, box.querySelector('.fold-file'), false);
+    }
+  });
+  // collapse btn, need to exclude the div of “show more”
+  document.querySelector(collapseFilesBtnSelector)?.addEventListener('click', () => {
+    for (const box of document.querySelectorAll('.file-content:not([data-folded="true"])')) {
+      if (box.getAttribute('id') === 'diff-incomplete') continue;
+      setFileFolding(box, box.querySelector('.fold-file'), true);
+    }
+  });
+}
diff --git a/web_src/js/features/recent-commits.js b/web_src/js/features/recent-commits.js
new file mode 100644
index 00000000..030c251a
--- /dev/null
+++ b/web_src/js/features/recent-commits.js
@@ -0,0 +1,21 @@
+import {createApp} from 'vue';
+
+export async function initRepoRecentCommits() {
+  const el = document.getElementById('repo-recent-commits-chart');
+  if (!el) return;
+
+  const {default: RepoRecentCommits} = await import(/* webpackChunkName: "recent-commits-graph" */'../components/RepoRecentCommits.vue');
+  try {
+    const View = createApp(RepoRecentCommits, {
+      locale: {
+        loadingTitle: el.getAttribute('data-locale-loading-title'),
+        loadingTitleFailed: el.getAttribute('data-locale-loading-title-failed'),
+        loadingInfo: el.getAttribute('data-locale-loading-info'),
+      },
+    });
+    View.mount(el);
+  } catch (err) {
+    console.error('RepoRecentCommits failed to load', err);
+    el.textContent = el.getAttribute('data-locale-component-failed-to-load');
+  }
+}
diff --git a/web_src/js/features/repo-branch.js b/web_src/js/features/repo-branch.js
new file mode 100644
index 00000000..b9ffc612
--- /dev/null
+++ b/web_src/js/features/repo-branch.js
@@ -0,0 +1,42 @@
+import $ from 'jquery';
+import {toggleElem} from '../utils/dom.js';
+
+export function initRepoBranchButton() {
+  initRepoCreateBranchButton();
+  initRepoRenameBranchButton();
+}
+
+function initRepoCreateBranchButton() {
+  // 2 pages share this code, one is the branch list page, the other is the commit view page: create branch/tag from current commit (dirty code)
+  for (const el of document.querySelectorAll('.show-create-branch-modal')) {
+    el.addEventListener('click', () => {
+      const modalFormName = el.getAttribute('data-modal-form') || '#create-branch-form';
+      const modalForm = document.querySelector(modalFormName);
+      if (!modalForm) return;
+      modalForm.action = `${modalForm.getAttribute('data-base-action')}${el.getAttribute('data-branch-from-urlcomponent')}`;
+
+      const fromSpanName = el.getAttribute('data-modal-from-span') || '#modal-create-branch-from-span';
+      document.querySelector(fromSpanName).textContent = el.getAttribute('data-branch-from');
+
+      $(el.getAttribute('data-modal')).modal('show');
+    });
+  }
+}
+
+function initRepoRenameBranchButton() {
+  for (const el of document.querySelectorAll('.show-rename-branch-modal')) {
+    el.addEventListener('click', () => {
+      const target = el.getAttribute('data-modal');
+      const modal = document.querySelector(target);
+      const oldBranchName = el.getAttribute('data-old-branch-name');
+      modal.querySelector('input[name=from]').value = oldBranchName;
+
+      // display the warning that the branch which is chosen is the default branch
+      const warn = modal.querySelector('.default-branch-warning');
+      toggleElem(warn, el.getAttribute('data-is-default-branch') === 'true');
+
+      const text = modal.querySelector('[data-rename-branch-to]');
+      text.textContent = text.getAttribute('data-rename-branch-to').replace('%s', oldBranchName);
+    });
+  }
+}
diff --git a/web_src/js/features/repo-code.js b/web_src/js/features/repo-code.js
new file mode 100644
index 00000000..794cc380
--- /dev/null
+++ b/web_src/js/features/repo-code.js
@@ -0,0 +1,195 @@
+import $ from 'jquery';
+import {svg} from '../svg.js';
+import {invertFileFolding} from './file-fold.js';
+import {createTippy} from '../modules/tippy.js';
+import {clippie} from 'clippie';
+import {toAbsoluteUrl} from '../utils.js';
+
+export const singleAnchorRegex = /^#(L|n)([1-9][0-9]*)$/;
+export const rangeAnchorRegex = /^#(L[1-9][0-9]*)-(L[1-9][0-9]*)$/;
+
+function changeHash(hash) {
+  if (window.history.pushState) {
+    window.history.pushState(null, null, hash);
+  } else {
+    window.location.hash = hash;
+  }
+}
+
+function isBlame() {
+  return Boolean(document.querySelector('div.blame'));
+}
+
+function getLineEls() {
+  return document.querySelectorAll(`.code-view td.lines-code${isBlame() ? '.blame-code' : ''}`);
+}
+
+function selectRange($linesEls, $selectionEndEl, $selectionStartEls) {
+  for (const el of $linesEls) {
+    el.closest('tr').classList.remove('active');
+  }
+
+  // add hashchange to permalink
+  const refInNewIssue = document.querySelector('a.ref-in-new-issue');
+  const copyPermalink = document.querySelector('a.copy-line-permalink');
+  const viewGitBlame = document.querySelector('a.view_git_blame');
+
+  const updateIssueHref = function (anchor) {
+    if (!refInNewIssue) return;
+    const urlIssueNew = refInNewIssue.getAttribute('data-url-issue-new');
+    const urlParamBodyLink = refInNewIssue.getAttribute('data-url-param-body-link');
+    const issueContent = `${toAbsoluteUrl(urlParamBodyLink)}#${anchor}`; // the default content for issue body
+    refInNewIssue.setAttribute('href', `${urlIssueNew}?body=${encodeURIComponent(issueContent)}`);
+  };
+
+  const updateViewGitBlameFragment = function (anchor) {
+    if (!viewGitBlame) return;
+    let href = viewGitBlame.getAttribute('href');
+    href = `${href.replace(/#L\d+$|#L\d+-L\d+$/, '')}`;
+    if (anchor.length !== 0) {
+      href = `${href}#${anchor}`;
+    }
+    viewGitBlame.setAttribute('href', href);
+  };
+
+  const updateCopyPermalinkUrl = function (anchor) {
+    if (!copyPermalink) return;
+    let link = copyPermalink.getAttribute('data-url');
+    link = `${link.replace(/#L\d+$|#L\d+-L\d+$/, '')}#${anchor}`;
+    copyPermalink.setAttribute('data-url', link);
+  };
+
+  if ($selectionStartEls) {
+    let a = parseInt($selectionEndEl[0].getAttribute('rel').slice(1));
+    let b = parseInt($selectionStartEls[0].getAttribute('rel').slice(1));
+    let c;
+    if (a !== b) {
+      if (a > b) {
+        c = a;
+        a = b;
+        b = c;
+      }
+      const classes = [];
+      for (let i = a; i <= b; i++) {
+        classes.push(`[rel=L${i}]`);
+      }
+      $linesEls.filter(classes.join(',')).each(function () {
+        this.closest('tr').classList.add('active');
+      });
+      changeHash(`#L${a}-L${b}`);
+
+      updateIssueHref(`L${a}-L${b}`);
+      updateViewGitBlameFragment(`L${a}-L${b}`);
+      updateCopyPermalinkUrl(`L${a}-L${b}`);
+      return;
+    }
+  }
+  $selectionEndEl[0].closest('tr').classList.add('active');
+  changeHash(`#${$selectionEndEl[0].getAttribute('rel')}`);
+
+  updateIssueHref($selectionEndEl[0].getAttribute('rel'));
+  updateViewGitBlameFragment($selectionEndEl[0].getAttribute('rel'));
+  updateCopyPermalinkUrl($selectionEndEl[0].getAttribute('rel'));
+}
+
+function showLineButton() {
+  const menu = document.querySelector('.code-line-menu');
+  if (!menu) return;
+
+  // remove all other line buttons
+  for (const el of document.querySelectorAll('.code-line-button')) {
+    el.remove();
+  }
+
+  // find active row and add button
+  const tr = document.querySelector('.code-view tr.active');
+  const td = tr.querySelector('td.lines-num');
+  const btn = document.createElement('button');
+  btn.classList.add('code-line-button', 'ui', 'basic', 'button');
+  btn.innerHTML = svg('octicon-kebab-horizontal');
+  td.prepend(btn);
+
+  // put a copy of the menu back into DOM for the next click
+  btn.closest('.code-view').append(menu.cloneNode(true));
+
+  createTippy(btn, {
+    trigger: 'click',
+    hideOnClick: true,
+    content: menu,
+    placement: 'right-start',
+    interactive: true,
+    onShow: (tippy) => {
+      tippy.popper.addEventListener('click', () => {
+        tippy.hide();
+      }, {once: true});
+    },
+  });
+}
+
+export function initRepoCodeView() {
+  if ($('.code-view .lines-num').length > 0) {
+    $(document).on('click', '.lines-num span', function (e) {
+      const linesEls = getLineEls();
+      const selectedEls = Array.from(linesEls).filter((el) => {
+        return el.matches(`[rel=${this.getAttribute('id')}]`);
+      });
+
+      let from;
+      if (e.shiftKey) {
+        from = Array.from(linesEls).filter((el) => {
+          return el.closest('tr').classList.contains('active');
+        });
+      }
+      selectRange($(linesEls), $(selectedEls), from ? $(from) : null);
+
+      if (window.getSelection) {
+        window.getSelection().removeAllRanges();
+      } else {
+        document.selection.empty();
+      }
+
+      showLineButton();
+    });
+
+    $(window).on('hashchange', () => {
+      let m = window.location.hash.match(rangeAnchorRegex);
+      const $linesEls = $(getLineEls());
+      let $first;
+      if (m) {
+        $first = $linesEls.filter(`[rel=${m[1]}]`);
+        if ($first.length) {
+          const $last = $linesEls.filter(`[rel=${m[2]}]`);
+          selectRange($linesEls, $first, $last.length ? $last : $linesEls.last());
+
+          // show code view menu marker (don't show in blame page)
+          if (!isBlame()) {
+            showLineButton();
+          }
+
+          $('html, body').scrollTop($first.offset().top - 200);
+          return;
+        }
+      }
+      m = window.location.hash.match(singleAnchorRegex);
+      if (m) {
+        $first = $linesEls.filter(`[rel=L${m[2]}]`);
+        if ($first.length) {
+          selectRange($linesEls, $first);
+
+          // show code view menu marker (don't show in blame page)
+          if (!isBlame()) {
+            showLineButton();
+          }
+
+          $('html, body').scrollTop($first.offset().top - 200);
+        }
+      }
+    }).trigger('hashchange');
+  }
+  $(document).on('click', '.fold-file', ({currentTarget}) => {
+    invertFileFolding(currentTarget.closest('.file-content'), currentTarget);
+  });
+  $(document).on('click', '.copy-line-permalink', async ({currentTarget}) => {
+    await clippie(toAbsoluteUrl(currentTarget.getAttribute('data-url')));
+  });
+}
diff --git a/web_src/js/features/repo-code.test.js b/web_src/js/features/repo-code.test.js
new file mode 100644
index 00000000..0e0062a7
--- /dev/null
+++ b/web_src/js/features/repo-code.test.js
@@ -0,0 +1,17 @@
+import {singleAnchorRegex, rangeAnchorRegex} from './repo-code.js';
+
+test('singleAnchorRegex', () => {
+  expect(singleAnchorRegex.test('#L0')).toEqual(false);
+  expect(singleAnchorRegex.test('#L1')).toEqual(true);
+  expect(singleAnchorRegex.test('#L01')).toEqual(false);
+  expect(singleAnchorRegex.test('#n0')).toEqual(false);
+  expect(singleAnchorRegex.test('#n1')).toEqual(true);
+  expect(singleAnchorRegex.test('#n01')).toEqual(false);
+});
+
+test('rangeAnchorRegex', () => {
+  expect(rangeAnchorRegex.test('#L0-L10')).toEqual(false);
+  expect(rangeAnchorRegex.test('#L1-L10')).toEqual(true);
+  expect(rangeAnchorRegex.test('#L01-L10')).toEqual(false);
+  expect(rangeAnchorRegex.test('#L1-L01')).toEqual(false);
+});
diff --git a/web_src/js/features/repo-commit.js b/web_src/js/features/repo-commit.js
new file mode 100644
index 00000000..f61ea08a
--- /dev/null
+++ b/web_src/js/features/repo-commit.js
@@ -0,0 +1,27 @@
+import {createTippy} from '../modules/tippy.js';
+import {toggleElem} from '../utils/dom.js';
+
+export function initRepoEllipsisButton() {
+  for (const button of document.querySelectorAll('.js-toggle-commit-body')) {
+    button.addEventListener('click', function (e) {
+      e.preventDefault();
+      const expanded = this.getAttribute('aria-expanded') === 'true';
+      toggleElem(this.parentElement.querySelector('.commit-body'));
+      this.setAttribute('aria-expanded', String(!expanded));
+    });
+  }
+}
+
+export function initCommitStatuses() {
+  for (const element of document.querySelectorAll('[data-tippy="commit-statuses"]')) {
+    const top = document.querySelector('.repository.file.list') || document.querySelector('.repository.diff');
+
+    createTippy(element, {
+      content: element.nextElementSibling,
+      placement: top ? 'top-start' : 'bottom-start',
+      interactive: true,
+      role: 'dialog',
+      theme: 'box-with-header',
+    });
+  }
+}
diff --git a/web_src/js/features/repo-common.js b/web_src/js/features/repo-common.js
new file mode 100644
index 00000000..88aa93d8
--- /dev/null
+++ b/web_src/js/features/repo-common.js
@@ -0,0 +1,83 @@
+import $ from 'jquery';
+import {hideElem, queryElems, showElem} from '../utils/dom.js';
+import {POST} from '../modules/fetch.js';
+import {showErrorToast} from '../modules/toast.js';
+import {sleep} from '../utils.js';
+
+async function onDownloadArchive(e) {
+  e.preventDefault();
+  // there are many places using the "archive-link", eg: the dropdown on the repo code page, the release list
+  const el = e.target.closest('a.archive-link[href]');
+  const targetLoading = el.closest('.ui.dropdown') ?? el;
+  targetLoading.classList.add('is-loading', 'loading-icon-2px');
+  try {
+    for (let tryCount = 0; ;tryCount++) {
+      const response = await POST(el.href);
+      if (!response.ok) throw new Error(`Invalid server response: ${response.status}`);
+
+      const data = await response.json();
+      if (data.complete) break;
+      await sleep(Math.min((tryCount + 1) * 750, 2000));
+    }
+    window.location.href = el.href; // the archive is ready, start real downloading
+  } catch (e) {
+    console.error(e);
+    showErrorToast(`Failed to download the archive: ${e}`, {duration: 2500});
+  } finally {
+    targetLoading.classList.remove('is-loading', 'loading-icon-2px');
+  }
+}
+
+export function initRepoArchiveLinks() {
+  queryElems('a.archive-link[href]', (el) => el.addEventListener('click', onDownloadArchive));
+}
+
+export function initRepoCloneLink() {
+  const $repoCloneSsh = $('#repo-clone-ssh');
+  const $repoCloneHttps = $('#repo-clone-https');
+  const $inputLink = $('#repo-clone-url');
+
+  if ((!$repoCloneSsh.length && !$repoCloneHttps.length) || !$inputLink.length) {
+    return;
+  }
+
+  $repoCloneSsh.on('click', () => {
+    localStorage.setItem('repo-clone-protocol', 'ssh');
+    window.updateCloneStates();
+  });
+  $repoCloneHttps.on('click', () => {
+    localStorage.setItem('repo-clone-protocol', 'https');
+    window.updateCloneStates();
+  });
+
+  $inputLink.on('focus', () => {
+    $inputLink.trigger('select');
+  });
+}
+
+export function initRepoCommonBranchOrTagDropdown(selector) {
+  $(selector).each(function () {
+    const $dropdown = $(this);
+    $dropdown.find('.reference.column').on('click', function () {
+      hideElem($dropdown.find('.scrolling.reference-list-menu'));
+      showElem($($(this).data('target')));
+      return false;
+    });
+  });
+}
+
+export function initRepoCommonFilterSearchDropdown(selector) {
+  const $dropdown = $(selector);
+  if (!$dropdown.length) return;
+
+  $dropdown.dropdown({
+    fullTextSearch: 'exact',
+    selectOnKeydown: false,
+    onChange(_text, _value, $choice) {
+      if ($choice[0].getAttribute('data-url')) {
+        window.location.href = $choice[0].getAttribute('data-url');
+      }
+    },
+    message: {noResults: $dropdown[0].getAttribute('data-no-results')},
+  });
+}
diff --git a/web_src/js/features/repo-diff-commit.js b/web_src/js/features/repo-diff-commit.js
new file mode 100644
index 00000000..aa7fc383
--- /dev/null
+++ b/web_src/js/features/repo-diff-commit.js
@@ -0,0 +1,53 @@
+import {hideElem, showElem, toggleElem} from '../utils/dom.js';
+import {GET} from '../modules/fetch.js';
+
+async function loadBranchesAndTags(area, loadingButton) {
+  loadingButton.classList.add('disabled');
+  try {
+    const res = await GET(loadingButton.getAttribute('data-fetch-url'));
+    const data = await res.json();
+    hideElem(loadingButton);
+    addTags(area, data.tags);
+    addBranches(area, data.branches, data.default_branch);
+    showElem(area.querySelectorAll('.branch-and-tag-detail'));
+  } finally {
+    loadingButton.classList.remove('disabled');
+  }
+}
+
+function addTags(area, tags) {
+  const tagArea = area.querySelector('.tag-area');
+  toggleElem(tagArea.parentElement, tags.length > 0);
+  for (const tag of tags) {
+    addLink(tagArea, tag.web_link, tag.name);
+  }
+}
+
+function addBranches(area, branches, defaultBranch) {
+  const defaultBranchTooltip = area.getAttribute('data-text-default-branch-tooltip');
+  const branchArea = area.querySelector('.branch-area');
+  toggleElem(branchArea.parentElement, branches.length > 0);
+  for (const branch of branches) {
+    const tooltip = defaultBranch === branch.name ? defaultBranchTooltip : null;
+    addLink(branchArea, branch.web_link, branch.name, tooltip);
+  }
+}
+
+function addLink(parent, href, text, tooltip) {
+  const link = document.createElement('a');
+  link.classList.add('muted', 'tw-px-1');
+  link.href = href;
+  link.textContent = text;
+  if (tooltip) {
+    link.classList.add('tw-border', 'tw-border-secondary', 'tw-rounded');
+    link.setAttribute('data-tooltip-content', tooltip);
+  }
+  parent.append(link);
+}
+
+export function initRepoDiffCommitBranchesAndTags() {
+  for (const area of document.querySelectorAll('.branch-and-tag-area')) {
+    const btn = area.querySelector('.load-branches-and-tags');
+    btn.addEventListener('click', () => loadBranchesAndTags(area, btn));
+  }
+}
diff --git a/web_src/js/features/repo-diff-commitselect.js b/web_src/js/features/repo-diff-commitselect.js
new file mode 100644
index 00000000..ebac64e8
--- /dev/null
+++ b/web_src/js/features/repo-diff-commitselect.js
@@ -0,0 +1,10 @@
+import {createApp} from 'vue';
+import DiffCommitSelector from '../components/DiffCommitSelector.vue';
+
+export function initDiffCommitSelect() {
+  const el = document.getElementById('diff-commit-select');
+  if (!el) return;
+
+  const commitSelect = createApp(DiffCommitSelector);
+  commitSelect.mount(el);
+}
diff --git a/web_src/js/features/repo-diff-filetree.js b/web_src/js/features/repo-diff-filetree.js
new file mode 100644
index 00000000..5dd2c42e
--- /dev/null
+++ b/web_src/js/features/repo-diff-filetree.js
@@ -0,0 +1,17 @@
+import {createApp} from 'vue';
+import DiffFileTree from '../components/DiffFileTree.vue';
+import DiffFileList from '../components/DiffFileList.vue';
+
+export function initDiffFileTree() {
+  const el = document.getElementById('diff-file-tree');
+  if (!el) return;
+
+  const fileTreeView = createApp(DiffFileTree);
+  fileTreeView.mount(el);
+
+  const fileListElement = document.getElementById('diff-file-list');
+  if (!fileListElement) return;
+
+  const fileListView = createApp(DiffFileList);
+  fileListView.mount(fileListElement);
+}
diff --git a/web_src/js/features/repo-diff.js b/web_src/js/features/repo-diff.js
new file mode 100644
index 00000000..e5723af0
--- /dev/null
+++ b/web_src/js/features/repo-diff.js
@@ -0,0 +1,232 @@
+import $ from 'jquery';
+import {initCompReactionSelector} from './comp/ReactionSelector.js';
+import {initRepoIssueContentHistory} from './repo-issue-content.js';
+import {initDiffFileTree} from './repo-diff-filetree.js';
+import {initDiffCommitSelect} from './repo-diff-commitselect.js';
+import {validateTextareaNonEmpty} from './comp/ComboMarkdownEditor.js';
+import {initViewedCheckboxListenerFor, countAndUpdateViewedFiles, initExpandAndCollapseFilesButton} from './pull-view-file.js';
+import {initImageDiff} from './imagediff.js';
+import {showErrorToast} from '../modules/toast.js';
+import {submitEventSubmitter, queryElemSiblings, hideElem, showElem} from '../utils/dom.js';
+import {POST, GET} from '../modules/fetch.js';
+
+const {pageData, i18n} = window.config;
+
+function initRepoDiffReviewButton() {
+  const reviewBox = document.getElementById('review-box');
+  if (!reviewBox) return;
+
+  const counter = reviewBox.querySelector('.review-comments-counter');
+  if (!counter) return;
+
+  $(document).on('click', 'button[name="pending_review"]', (e) => {
+    const $form = $(e.target).closest('form');
+    // Watch for the form's submit event.
+    $form.on('submit', () => {
+      const num = parseInt(counter.getAttribute('data-pending-comment-number')) + 1 || 1;
+      counter.setAttribute('data-pending-comment-number', num);
+      counter.textContent = num;
+
+      reviewBox.classList.remove('pulse');
+      requestAnimationFrame(() => {
+        reviewBox.classList.add('pulse');
+      });
+    });
+  });
+}
+
+function initRepoDiffFileViewToggle() {
+  $('.file-view-toggle').on('click', function () {
+    for (const el of queryElemSiblings(this)) {
+      el.classList.remove('active');
+    }
+    this.classList.add('active');
+
+    const target = document.querySelector(this.getAttribute('data-toggle-selector'));
+    if (!target) return;
+
+    hideElem(queryElemSiblings(target));
+    showElem(target);
+  });
+}
+
+function initRepoDiffConversationForm() {
+  $(document).on('submit', '.conversation-holder form', async (e) => {
+    e.preventDefault();
+
+    const $form = $(e.target);
+    const textArea = e.target.querySelector('textarea');
+    if (!validateTextareaNonEmpty(textArea)) {
+      return;
+    }
+
+    if (e.target.classList.contains('is-loading')) return;
+    try {
+      e.target.classList.add('is-loading');
+      const formData = new FormData($form[0]);
+
+      // If the form is submitted by a button, append the button's name and value to the form data.
+      // originalEvent can be undefined, such as an event that's caused by Ctrl+Enter, in that case
+      // sent the event itself.
+      const submitter = submitEventSubmitter(e.originalEvent ?? e);
+      const isSubmittedByButton = (submitter?.nodeName === 'BUTTON') || (submitter?.nodeName === 'INPUT' && submitter.type === 'submit');
+      if (isSubmittedByButton && submitter.name) {
+        formData.append(submitter.name, submitter.value);
+      }
+
+      const response = await POST(e.target.getAttribute('action'), {data: formData});
+      const $newConversationHolder = $(await response.text());
+      const {path, side, idx} = $newConversationHolder.data();
+
+      $form.closest('.conversation-holder').replaceWith($newConversationHolder);
+      let selector;
+      if ($form.closest('tr').data('line-type') === 'same') {
+        selector = `[data-path="${path}"] .add-code-comment[data-idx="${idx}"]`;
+      } else {
+        selector = `[data-path="${path}"] .add-code-comment[data-side="${side}"][data-idx="${idx}"]`;
+      }
+      for (const el of document.querySelectorAll(selector)) {
+        el.classList.add('tw-invisible');
+      }
+      $newConversationHolder.find('.dropdown').dropdown();
+      initCompReactionSelector($newConversationHolder);
+    } catch { // here the caught error might be a jQuery AJAX error (thrown by await $.post), which is not good to use for error message handling
+      console.error('error when submitting conversation', e);
+      showErrorToast(i18n.network_error);
+    } finally {
+      e.target.classList.remove('is-loading');
+    }
+  });
+
+  $(document).on('click', '.resolve-conversation', async function (e) {
+    e.preventDefault();
+    const comment_id = $(this).data('comment-id');
+    const origin = $(this).data('origin');
+    const action = $(this).data('action');
+    const url = $(this).data('update-url');
+
+    try {
+      const response = await POST(url, {data: new URLSearchParams({origin, action, comment_id})});
+      const data = await response.text();
+
+      if ($(this).closest('.conversation-holder').length) {
+        const $conversation = $(data);
+        $(this).closest('.conversation-holder').replaceWith($conversation);
+        $conversation.find('.dropdown').dropdown();
+        initCompReactionSelector($conversation);
+      } else {
+        window.location.reload();
+      }
+    } catch (error) {
+      console.error('Error:', error);
+    }
+  });
+}
+
+export function initRepoDiffConversationNav() {
+  // Previous/Next code review conversation
+  $(document).on('click', '.previous-conversation', (e) => {
+    const $conversation = $(e.currentTarget).closest('.comment-code-cloud');
+    const $conversations = $('.comment-code-cloud:not(.tw-hidden)');
+    const index = $conversations.index($conversation);
+    const previousIndex = index > 0 ? index - 1 : $conversations.length - 1;
+    const $previousConversation = $conversations.eq(previousIndex);
+    const anchor = $previousConversation.find('.comment').first()[0].getAttribute('id');
+    window.location.href = `#${anchor}`;
+  });
+  $(document).on('click', '.next-conversation', (e) => {
+    const $conversation = $(e.currentTarget).closest('.comment-code-cloud');
+    const $conversations = $('.comment-code-cloud:not(.tw-hidden)');
+    const index = $conversations.index($conversation);
+    const nextIndex = index < $conversations.length - 1 ? index + 1 : 0;
+    const $nextConversation = $conversations.eq(nextIndex);
+    const anchor = $nextConversation.find('.comment').first()[0].getAttribute('id');
+    window.location.href = `#${anchor}`;
+  });
+}
+
+// Will be called when the show more (files) button has been pressed
+function onShowMoreFiles() {
+  initRepoIssueContentHistory();
+  initViewedCheckboxListenerFor();
+  countAndUpdateViewedFiles();
+  initImageDiff();
+}
+
+export async function loadMoreFiles(url) {
+  const target = document.querySelector('a#diff-show-more-files');
+  if (target?.classList.contains('disabled') || pageData.diffFileInfo.isLoadingNewData) {
+    return;
+  }
+
+  pageData.diffFileInfo.isLoadingNewData = true;
+  target?.classList.add('disabled');
+
+  try {
+    const response = await GET(url);
+    const resp = await response.text();
+    const $resp = $(resp);
+    // the response is a full HTML page, we need to extract the relevant contents:
+    // 1. append the newly loaded file list items to the existing list
+    $('#diff-incomplete').replaceWith($resp.find('#diff-file-boxes').children());
+    // 2. re-execute the script to append the newly loaded items to the JS variables to refresh the DiffFileTree
+    $('body').append($resp.find('script#diff-data-script'));
+
+    onShowMoreFiles();
+  } catch (error) {
+    console.error('Error:', error);
+    showErrorToast('An error occurred while loading more files.');
+  } finally {
+    target?.classList.remove('disabled');
+    pageData.diffFileInfo.isLoadingNewData = false;
+  }
+}
+
+function initRepoDiffShowMore() {
+  $(document).on('click', 'a#diff-show-more-files', (e) => {
+    e.preventDefault();
+
+    const linkLoadMore = e.target.getAttribute('data-href');
+    loadMoreFiles(linkLoadMore);
+  });
+
+  $(document).on('click', 'a.diff-load-button', async (e) => {
+    e.preventDefault();
+    const $target = $(e.target);
+
+    if (e.target.classList.contains('disabled')) {
+      return;
+    }
+
+    e.target.classList.add('disabled');
+
+    const url = $target.data('href');
+
+    try {
+      const response = await GET(url);
+      const resp = await response.text();
+
+      if (!resp) {
+        return;
+      }
+      $target.parent().replaceWith($(resp).find('#diff-file-boxes .diff-file-body .file-body').children());
+      onShowMoreFiles();
+    } catch (error) {
+      console.error('Error:', error);
+    } finally {
+      e.target.classList.remove('disabled');
+    }
+  });
+}
+
+export function initRepoDiffView() {
+  initRepoDiffConversationForm();
+  if (!$('#diff-file-list').length) return;
+  initDiffFileTree();
+  initDiffCommitSelect();
+  initRepoDiffShowMore();
+  initRepoDiffReviewButton();
+  initRepoDiffFileViewToggle();
+  initViewedCheckboxListenerFor();
+  initExpandAndCollapseFilesButton();
+}
diff --git a/web_src/js/features/repo-editor.js b/web_src/js/features/repo-editor.js
new file mode 100644
index 00000000..01dc4b95
--- /dev/null
+++ b/web_src/js/features/repo-editor.js
@@ -0,0 +1,184 @@
+import $ from 'jquery';
+import {htmlEscape} from 'escape-goat';
+import {createCodeEditor} from './codeeditor.js';
+import {hideElem, showElem} from '../utils/dom.js';
+import {initMarkupContent} from '../markup/content.js';
+import {attachRefIssueContextPopup} from './contextpopup.js';
+import {POST} from '../modules/fetch.js';
+
+function initEditPreviewTab($form) {
+  const $tabMenu = $form.find('.tabular.menu');
+  $tabMenu.find('.item').tab();
+  const $previewTab = $tabMenu.find(`.item[data-tab="${$tabMenu.data('preview')}"]`);
+  if ($previewTab.length) {
+    $previewTab.on('click', async function () {
+      const $this = $(this);
+      let context = `${$this.data('context')}/`;
+      const mode = $this.data('markup-mode') || 'comment';
+      const $treePathEl = $form.find('input#tree_path');
+      if ($treePathEl.length > 0) {
+        context += $treePathEl.val();
+      }
+      context = context.substring(0, context.lastIndexOf('/'));
+
+      const formData = new FormData();
+      formData.append('mode', mode);
+      formData.append('context', context);
+      formData.append('text', $form.find(`.tab[data-tab="${$tabMenu.data('write')}"] textarea`).val());
+      formData.append('file_path', $treePathEl.val());
+      try {
+        const response = await POST($this.data('url'), {data: formData});
+        const data = await response.text();
+        const $previewPanel = $form.find(`.tab[data-tab="${$tabMenu.data('preview')}"]`);
+        renderPreviewPanelContent($previewPanel, data);
+      } catch (error) {
+        console.error('Error:', error);
+      }
+    });
+  }
+}
+
+function initEditorForm() {
+  const $form = $('.repository .edit.form');
+  if (!$form) return;
+  initEditPreviewTab($form);
+}
+
+function getCursorPosition($e) {
+  const el = $e.get(0);
+  let pos = 0;
+  if ('selectionStart' in el) {
+    pos = el.selectionStart;
+  } else if ('selection' in document) {
+    el.focus();
+    const Sel = document.selection.createRange();
+    const SelLength = document.selection.createRange().text.length;
+    Sel.moveStart('character', -el.value.length);
+    pos = Sel.text.length - SelLength;
+  }
+  return pos;
+}
+
+export function initRepoEditor() {
+  initEditorForm();
+
+  $('.js-quick-pull-choice-option').on('change', function () {
+    if ($(this).val() === 'commit-to-new-branch') {
+      showElem('.quick-pull-branch-name');
+      document.querySelector('.quick-pull-branch-name input').required = true;
+    } else {
+      hideElem('.quick-pull-branch-name');
+      document.querySelector('.quick-pull-branch-name input').required = false;
+    }
+    $('#commit-button').text(this.getAttribute('button_text'));
+  });
+
+  const joinTreePath = ($fileNameEl) => {
+    const parts = [];
+    $('.breadcrumb span.section').each(function () {
+      const $element = $(this);
+      if ($element.find('a').length) {
+        parts.push($element.find('a').text());
+      } else {
+        parts.push($element.text());
+      }
+    });
+    if ($fileNameEl.val()) parts.push($fileNameEl.val());
+    $('#tree_path').val(parts.join('/'));
+  };
+
+  const $editFilename = $('#file-name');
+  $editFilename.on('input', function () {
+    const parts = $(this).val().split('/');
+
+    if (parts.length > 1) {
+      for (let i = 0; i < parts.length; ++i) {
+        const value = parts[i];
+        if (i < parts.length - 1) {
+          if (value.length) {
+            $(`<span class="section"><a href="#">${htmlEscape(value)}</a></span>`).insertBefore($(this));
+            $('<div class="breadcrumb-divider">/</div>').insertBefore($(this));
+          }
+        } else {
+          $(this).val(value);
+        }
+        this.setSelectionRange(0, 0);
+      }
+    }
+
+    joinTreePath($(this));
+  });
+
+  $editFilename.on('keydown', function (e) {
+    const $section = $('.breadcrumb span.section');
+
+    // Jump back to last directory once the filename is empty
+    if (e.code === 'Backspace' && getCursorPosition($(this)) === 0 && $section.length > 0) {
+      e.preventDefault();
+      const $divider = $('.breadcrumb .breadcrumb-divider');
+      const value = $section.last().find('a').text();
+      $(this).val(value + $(this).val());
+      this.setSelectionRange(value.length, value.length);
+      $section.last().remove();
+      $divider.last().remove();
+      joinTreePath($(this));
+    }
+  });
+
+  const $editArea = $('.repository.editor textarea#edit_area');
+  if (!$editArea.length) return;
+
+  (async () => {
+    const editor = await createCodeEditor($editArea[0], $editFilename[0]);
+
+    // Using events from https://github.com/codedance/jquery.AreYouSure#advanced-usage
+    // to enable or disable the commit button
+    const commitButton = document.getElementById('commit-button');
+    const $editForm = $('.ui.edit.form');
+    const dirtyFileClass = 'dirty-file';
+
+    // Disabling the button at the start
+    if ($('input[name="page_has_posted"]').val() !== 'true') {
+      commitButton.disabled = true;
+    }
+
+    // Registering a custom listener for the file path and the file content
+    $editForm.areYouSure({
+      silent: true,
+      dirtyClass: dirtyFileClass,
+      fieldSelector: ':input:not(.commit-form-wrapper :input)',
+      change($form) {
+        const dirty = $form[0]?.classList.contains(dirtyFileClass);
+        commitButton.disabled = !dirty;
+      },
+    });
+
+    // Update the editor from query params, if available,
+    // only after the dirtyFileClass initialization
+    const params = new URLSearchParams(window.location.search);
+    const value = params.get('value');
+    if (value) {
+      editor.setValue(value);
+    }
+
+    commitButton?.addEventListener('click', (e) => {
+      // A modal which asks if an empty file should be committed
+      if (!$editArea.val()) {
+        $('#edit-empty-content-modal').modal({
+          onApprove() {
+            $('.edit.form').trigger('submit');
+          },
+        }).modal('show');
+        e.preventDefault();
+      }
+    });
+  })();
+}
+
+export function renderPreviewPanelContent($panelPreviewer, data) {
+  $panelPreviewer.html(data);
+  initMarkupContent();
+
+  const $refIssues = $panelPreviewer.find('p .ref-issue');
+  attachRefIssueContextPopup($refIssues);
+}
diff --git a/web_src/js/features/repo-findfile.js b/web_src/js/features/repo-findfile.js
new file mode 100644
index 00000000..cff5068a
--- /dev/null
+++ b/web_src/js/features/repo-findfile.js
@@ -0,0 +1,117 @@
+import {svg} from '../svg.js';
+import {toggleElem} from '../utils/dom.js';
+import {pathEscapeSegments} from '../utils/url.js';
+import {GET} from '../modules/fetch.js';
+
+const threshold = 50;
+let files = [];
+let repoFindFileInput, repoFindFileTableBody, repoFindFileNoResult;
+
+// return the case-insensitive sub-match result as an array:  [unmatched, matched, unmatched, matched, ...]
+// res[even] is unmatched, res[odd] is matched, see unit tests for examples
+// argument subLower must be a lower-cased string.
+export function strSubMatch(full, subLower) {
+  const res = [''];
+  let i = 0, j = 0;
+  const fullLower = full.toLowerCase();
+  while (i < subLower.length && j < fullLower.length) {
+    if (subLower[i] === fullLower[j]) {
+      if (res.length % 2 !== 0) res.push('');
+      res[res.length - 1] += full[j];
+      j++;
+      i++;
+    } else {
+      if (res.length % 2 === 0) res.push('');
+      res[res.length - 1] += full[j];
+      j++;
+    }
+  }
+  if (i !== subLower.length) {
+    // if the sub string doesn't match the full, only return the full as unmatched.
+    return [full];
+  }
+  if (j < full.length) {
+    // append remaining chars from full to result as unmatched
+    if (res.length % 2 === 0) res.push('');
+    res[res.length - 1] += full.substring(j);
+  }
+  return res;
+}
+
+export function calcMatchedWeight(matchResult) {
+  let weight = 0;
+  for (let i = 0; i < matchResult.length; i++) {
+    if (i % 2 === 1) { // matches are on odd indices, see strSubMatch
+      // use a function f(x+x) > f(x) + f(x) to make the longer matched string has higher weight.
+      weight += matchResult[i].length * matchResult[i].length;
+    }
+  }
+  return weight;
+}
+
+export function filterRepoFilesWeighted(files, filter) {
+  let filterResult = [];
+  if (filter) {
+    const filterLower = filter.toLowerCase();
+    // TODO: for large repo, this loop could be slow, maybe there could be one more limit:
+    // ... && filterResult.length < threshold * 20,  wait for more feedbacks
+    for (let i = 0; i < files.length; i++) {
+      const res = strSubMatch(files[i], filterLower);
+      if (res.length > 1) { // length==1 means unmatched, >1 means having matched sub strings
+        filterResult.push({matchResult: res, matchWeight: calcMatchedWeight(res)});
+      }
+    }
+    filterResult.sort((a, b) => b.matchWeight - a.matchWeight);
+    filterResult = filterResult.slice(0, threshold);
+  } else {
+    for (let i = 0; i < files.length && i < threshold; i++) {
+      filterResult.push({matchResult: [files[i]], matchWeight: 0});
+    }
+  }
+  return filterResult;
+}
+
+function filterRepoFiles(filter) {
+  const treeLink = repoFindFileInput.getAttribute('data-url-tree-link');
+  repoFindFileTableBody.innerHTML = '';
+
+  const filterResult = filterRepoFilesWeighted(files, filter);
+
+  toggleElem(repoFindFileNoResult, !filterResult.length);
+  for (const r of filterResult) {
+    const row = document.createElement('tr');
+    const cell = document.createElement('td');
+    const a = document.createElement('a');
+    a.setAttribute('href', `${treeLink}/${pathEscapeSegments(r.matchResult.join(''))}`);
+    a.innerHTML = svg('octicon-file', 16, 'tw-mr-2');
+    row.append(cell);
+    cell.append(a);
+    for (const [index, part] of r.matchResult.entries()) {
+      const span = document.createElement('span');
+      // safely escape by using textContent
+      span.textContent = part;
+      // if the target file path is "abc/xyz", to search "bx", then the matchResult is ['a', 'b', 'c/', 'x', 'yz']
+      // the matchResult[odd] is matched and highlighted to red.
+      if (index % 2 === 1) span.classList.add('ui', 'text', 'red');
+      a.append(span);
+    }
+    repoFindFileTableBody.append(row);
+  }
+}
+
+async function loadRepoFiles() {
+  const response = await GET(repoFindFileInput.getAttribute('data-url-data-link'));
+  files = await response.json();
+  filterRepoFiles(repoFindFileInput.value);
+}
+
+export function initFindFileInRepo() {
+  repoFindFileInput = document.getElementById('repo-file-find-input');
+  if (!repoFindFileInput) return;
+
+  repoFindFileTableBody = document.querySelector('#repo-find-file-table tbody');
+  repoFindFileNoResult = document.getElementById('repo-find-file-no-result');
+  repoFindFileInput.addEventListener('input', () => filterRepoFiles(repoFindFileInput.value));
+
+  loadRepoFiles();
+}
diff --git a/web_src/js/features/repo-findfile.test.js b/web_src/js/features/repo-findfile.test.js
new file mode 100644
index 00000000..2d96ed44
--- /dev/null
+++ b/web_src/js/features/repo-findfile.test.js
@@ -0,0 +1,34 @@
+import {strSubMatch, calcMatchedWeight, filterRepoFilesWeighted} from './repo-findfile.js';
+
+describe('Repo Find Files', () => {
+  test('strSubMatch', () => {
+    expect(strSubMatch('abc', '')).toEqual(['abc']);
+    expect(strSubMatch('abc', 'a')).toEqual(['', 'a', 'bc']);
+    expect(strSubMatch('abc', 'b')).toEqual(['a', 'b', 'c']);
+    expect(strSubMatch('abc', 'c')).toEqual(['ab', 'c']);
+    expect(strSubMatch('abc', 'ac')).toEqual(['', 'a', 'b', 'c']);
+    expect(strSubMatch('abc', 'z')).toEqual(['abc']);
+    expect(strSubMatch('abc', 'az')).toEqual(['abc']);
+
+    expect(strSubMatch('ABc', 'ac')).toEqual(['', 'A', 'B', 'c']);
+    expect(strSubMatch('abC', 'ac')).toEqual(['', 'a', 'b', 'C']);
+
+    expect(strSubMatch('aabbcc', 'abc')).toEqual(['', 'a', 'a', 'b', 'b', 'c', 'c']);
+    expect(strSubMatch('the/directory', 'hedir')).toEqual(['t', 'he', '/', 'dir', 'ectory']);
+  });
+
+  test('calcMatchedWeight', () => {
+    expect(calcMatchedWeight(['a', 'b', 'c', 'd']) < calcMatchedWeight(['a', 'bc', 'c'])).toBeTruthy();
+  });
+
+  test('filterRepoFilesWeighted', () => {
+    // the first matched result should always be the "word.txt"
+    let res = filterRepoFilesWeighted(['word.txt', 'we-got-result.dat'], 'word');
+    expect(res).toHaveLength(2);
+    expect(res[0].matchResult).toEqual(['', 'word', '.txt']);
+
+    res = filterRepoFilesWeighted(['we-got-result.dat', 'word.txt'], 'word');
+    expect(res).toHaveLength(2);
+    expect(res[0].matchResult).toEqual(['', 'word', '.txt']);
+  });
+});
diff --git a/web_src/js/features/repo-graph.js b/web_src/js/features/repo-graph.js
new file mode 100644
index 00000000..689b6f13
--- /dev/null
+++ b/web_src/js/features/repo-graph.js
@@ -0,0 +1,155 @@
+import $ from 'jquery';
+import {hideElem, showElem} from '../utils/dom.js';
+import {GET} from '../modules/fetch.js';
+
+export function initRepoGraphGit() {
+  const graphContainer = document.getElementById('git-graph-container');
+  if (!graphContainer) return;
+
+  document.getElementById('flow-color-monochrome')?.addEventListener('click', () => {
+    document.getElementById('flow-color-monochrome').classList.add('active');
+    document.getElementById('flow-color-colored')?.classList.remove('active');
+    graphContainer.classList.remove('colored');
+    graphContainer.classList.add('monochrome');
+    const params = new URLSearchParams(window.location.search);
+    params.set('mode', 'monochrome');
+    const queryString = params.toString();
+    if (queryString) {
+      window.history.replaceState({}, '', `?${queryString}`);
+    } else {
+      window.history.replaceState({}, '', window.location.pathname);
+    }
+    for (const link of document.querySelectorAll('.pagination a')) {
+      const href = link.getAttribute('href');
+      if (!href) continue;
+      const url = new URL(href, window.location);
+      const params = url.searchParams;
+      params.set('mode', 'monochrome');
+      url.search = `?${params.toString()}`;
+      link.setAttribute('href', url.href);
+    }
+  });
+
+  document.getElementById('flow-color-colored')?.addEventListener('click', () => {
+    document.getElementById('flow-color-colored').classList.add('active');
+    document.getElementById('flow-color-monochrome')?.classList.remove('active');
+    graphContainer.classList.add('colored');
+    graphContainer.classList.remove('monochrome');
+    for (const link of document.querySelectorAll('.pagination a')) {
+      const href = link.getAttribute('href');
+      if (!href) continue;
+      const url = new URL(href, window.location);
+      const params = url.searchParams;
+      params.delete('mode');
+      url.search = `?${params.toString()}`;
+      link.setAttribute('href', url.href);
+    }
+    const params = new URLSearchParams(window.location.search);
+    params.delete('mode');
+    const queryString = params.toString();
+    if (queryString) {
+      window.history.replaceState({}, '', `?${queryString}`);
+    } else {
+      window.history.replaceState({}, '', window.location.pathname);
+    }
+  });
+  const url = new URL(window.location);
+  const params = url.searchParams;
+  const updateGraph = () => {
+    const queryString = params.toString();
+    const ajaxUrl = new URL(url);
+    ajaxUrl.searchParams.set('div-only', 'true');
+    window.history.replaceState({}, '', queryString ? `?${queryString}` : window.location.pathname);
+    document.getElementById('pagination').innerHTML = '';
+    hideElem('#rel-container');
+    hideElem('#rev-container');
+    showElem('#loading-indicator');
+    (async () => {
+      const response = await GET(String(ajaxUrl));
+      const html = await response.text();
+      const div = document.createElement('div');
+      div.innerHTML = html;
+      document.getElementById('pagination').innerHTML = div.querySelector('#pagination').innerHTML;
+      document.getElementById('rel-container').innerHTML = div.querySelector('#rel-container').innerHTML;
+      document.getElementById('rev-container').innerHTML = div.querySelector('#rev-container').innerHTML;
+      hideElem('#loading-indicator');
+      showElem('#rel-container');
+      showElem('#rev-container');
+    })();
+  };
+  const dropdownSelected = params.getAll('branch');
+  if (params.has('hide-pr-refs') && params.get('hide-pr-refs') === 'true') {
+    dropdownSelected.splice(0, 0, '...flow-hide-pr-refs');
+  }
+
+  const flowSelectRefsDropdown = document.getElementById('flow-select-refs-dropdown');
+  $(flowSelectRefsDropdown).dropdown('set selected', dropdownSelected);
+  $(flowSelectRefsDropdown).dropdown({
+    clearable: true,
+    fullTextSeach: 'exact',
+    onRemove(toRemove) {
+      if (toRemove === '...flow-hide-pr-refs') {
+        params.delete('hide-pr-refs');
+      } else {
+        const branches = params.getAll('branch');
+        params.delete('branch');
+        for (const branch of branches) {
+          if (branch !== toRemove) {
+            params.append('branch', branch);
+          }
+        }
+      }
+      updateGraph();
+    },
+    onAdd(toAdd) {
+      if (toAdd === '...flow-hide-pr-refs') {
+        params.set('hide-pr-refs', true);
+      } else {
+        params.append('branch', toAdd);
+      }
+      updateGraph();
+    },
+  });
+
+  graphContainer.addEventListener('mouseenter', (e) => {
+    if (e.target.matches('#rev-list li')) {
+      const flow = e.target.getAttribute('data-flow');
+      if (flow === '0') return;
+      document.getElementById(`flow-${flow}`)?.classList.add('highlight');
+      e.target.classList.add('hover');
+      for (const item of document.querySelectorAll(`#rev-list li[data-flow='${flow}']`)) {
+        item.classList.add('highlight');
+      }
+    } else if (e.target.matches('#rel-container .flow-group')) {
+      e.target.classList.add('highlight');
+      const flow = e.target.getAttribute('data-flow');
+      for (const item of document.querySelectorAll(`#rev-list li[data-flow='${flow}']`)) {
+        item.classList.add('highlight');
+      }
+    } else if (e.target.matches('#rel-container .flow-commit')) {
+      const rev = e.target.getAttribute('data-rev');
+      document.querySelector(`#rev-list li#commit-${rev}`)?.classList.add('hover');
+    }
+  });
+
+  graphContainer.addEventListener('mouseleave', (e) => {
+    if (e.target.matches('#rev-list li')) {
+      const flow = e.target.getAttribute('data-flow');
+      if (flow === '0') return;
+      document.getElementById(`flow-${flow}`)?.classList.remove('highlight');
+      e.target.classList.remove('hover');
+      for (const item of document.querySelectorAll(`#rev-list li[data-flow='${flow}']`)) {
+        item.classList.remove('highlight');
+      }
+    } else if (e.target.matches('#rel-container .flow-group')) {
+      e.target.classList.remove('highlight');
+      const flow = e.target.getAttribute('data-flow');
+      for (const item of document.querySelectorAll(`#rev-list li[data-flow='${flow}']`)) {
+        item.classList.remove('highlight');
+      }
+    } else if (e.target.matches('#rel-container .flow-commit')) {
+      const rev = e.target.getAttribute('data-rev');
+      document.querySelector(`#rev-list li#commit-${rev}`)?.classList.remove('hover');
+    }
+  });
+}
diff --git a/web_src/js/features/repo-home.js b/web_src/js/features/repo-home.js
new file mode 100644
index 00000000..6a5bce82
--- /dev/null
+++ b/web_src/js/features/repo-home.js
@@ -0,0 +1,147 @@
+import $ from 'jquery';
+import {stripTags} from '../utils.js';
+import {hideElem, queryElemChildren, showElem} from '../utils/dom.js';
+import {POST} from '../modules/fetch.js';
+import {showErrorToast} from '../modules/toast.js';
+
+const {appSubUrl} = window.config;
+
+export function initRepoTopicBar() {
+  const mgrBtn = document.getElementById('manage_topic');
+  if (!mgrBtn) return;
+
+  const editDiv = document.getElementById('topic_edit');
+  const viewDiv = document.getElementById('repo-topics');
+  const topicDropdown = editDiv.querySelector('.ui.dropdown');
+  let lastErrorToast;
+
+  mgrBtn.addEventListener('click', () => {
+    hideElem(viewDiv);
+    showElem(editDiv);
+    topicDropdown.querySelector('input.search').focus();
+  });
+
+  document.querySelector('#cancel_topic_edit').addEventListener('click', () => {
+    lastErrorToast?.hideToast();
+    hideElem(editDiv);
+    showElem(viewDiv);
+    mgrBtn.focus();
+  });
+
+  document.getElementById('save_topic').addEventListener('click', async (e) => {
+    lastErrorToast?.hideToast();
+    const topics = editDiv.querySelector('input[name=topics]').value;
+
+    const data = new FormData();
+    data.append('topics', topics);
+
+    const response = await POST(e.target.getAttribute('data-link'), {data});
+
+    if (response.ok) {
+      const responseData = await response.json();
+      if (responseData.status === 'ok') {
+        queryElemChildren(viewDiv, '.repo-topic', (el) => el.remove());
+        if (topics.length) {
+          const topicArray = topics.split(',');
+          topicArray.sort();
+          for (const topic of topicArray) {
+            // it should match the code in repo/home.tmpl
+            const link = document.createElement('a');
+            link.classList.add('repo-topic', 'ui', 'large', 'label');
+            link.href = `${appSubUrl}/explore/repos?q=${encodeURIComponent(topic)}&topic=1`;
+            link.textContent = topic;
+            mgrBtn.parentNode.insertBefore(link, mgrBtn); // insert all new topics before manage button
+          }
+        }
+        hideElem(editDiv);
+        showElem(viewDiv);
+      }
+    } else if (response.status === 422) {
+      // how to test: input topic like " invalid topic " (with spaces), and select it from the list, then "Save"
+      const responseData = await response.json();
+      lastErrorToast = showErrorToast(responseData.message, {duration: 5000});
+      if (responseData.invalidTopics.length > 0) {
+        const {invalidTopics} = responseData;
+        const topicLabels = queryElemChildren(topicDropdown, 'a.ui.label');
+        for (const [index, value] of topics.split(',').entries()) {
+          if (invalidTopics.includes(value)) {
+            topicLabels[index].classList.remove('green');
+            topicLabels[index].classList.add('red');
+          }
+        }
+      }
+    }
+  });
+
+  $(topicDropdown).dropdown({
+    allowAdditions: true,
+    forceSelection: false,
+    fullTextSearch: 'exact',
+    fields: {name: 'description', value: 'data-value'},
+    saveRemoteData: false,
+    label: {
+      transition: 'horizontal flip',
+      duration: 200,
+      variation: false,
+    },
+    apiSettings: {
+      url: `${appSubUrl}/explore/topics/search?q={query}`,
+      throttle: 500,
+      cache: false,
+      onResponse(res) {
+        const formattedResponse = {
+          success: false,
+          results: [],
+        };
+        const query = stripTags(this.urlData.query.trim());
+        let found_query = false;
+        const current_topics = [];
+        for (const el of queryElemChildren(topicDropdown, 'a.ui.label.visible')) {
+          current_topics.push(el.getAttribute('data-value'));
+        }
+
+        if (res.topics) {
+          let found = false;
+          for (let i = 0; i < res.topics.length; i++) {
+            // skip currently added tags
+            if (current_topics.includes(res.topics[i].topic_name)) {
+              continue;
+            }
+
+            if (res.topics[i].topic_name.toLowerCase() === query.toLowerCase()) {
+              found_query = true;
+            }
+            formattedResponse.results.push({description: res.topics[i].topic_name, 'data-value': res.topics[i].topic_name});
+            found = true;
+          }
+          formattedResponse.success = found;
+        }
+
+        if (query.length > 0 && !found_query) {
+          formattedResponse.success = true;
+          formattedResponse.results.unshift({description: query, 'data-value': query});
+        } else if (query.length > 0 && found_query) {
+          formattedResponse.results.sort((a, b) => {
+            if (a.description.toLowerCase() === query.toLowerCase()) return -1;
+            if (b.description.toLowerCase() === query.toLowerCase()) return 1;
+            if (a.description > b.description) return -1;
+            if (a.description < b.description) return 1;
+            return 0;
+          });
+        }
+
+        return formattedResponse;
+      },
+    },
+    onLabelCreate(value) {
+      value = value.toLowerCase().trim();
+      this.attr('data-value', value).contents().first().replaceWith(value);
+      return $(this);
+    },
+    onAdd(addedValue, _addedText, $addedChoice) {
+      addedValue = addedValue.toLowerCase().trim();
+      $addedChoice[0].setAttribute('data-value', addedValue);
+      $addedChoice[0].setAttribute('data-text', addedValue);
+    },
+  });
+}
diff --git a/web_src/js/features/repo-issue-content.js b/web_src/js/features/repo-issue-content.js
new file mode 100644
index 00000000..cef2f490
--- /dev/null
+++ b/web_src/js/features/repo-issue-content.js
@@ -0,0 +1,154 @@
+import $ from 'jquery';
+import {svg} from '../svg.js';
+import {showErrorToast} from '../modules/toast.js';
+import {GET, POST} from '../modules/fetch.js';
+import {showElem} from '../utils/dom.js';
+
+const {appSubUrl} = window.config;
+let i18nTextEdited;
+let i18nTextOptions;
+let i18nTextDeleteFromHistory;
+let i18nTextDeleteFromHistoryConfirm;
+
+function showContentHistoryDetail(issueBaseUrl, commentId, historyId, itemTitleHtml) {
+  let $dialog = $('.content-history-detail-dialog');
+  if ($dialog.length) return;
+
+  $dialog = $(`
+<div class="ui modal content-history-detail-dialog">
+  ${svg('octicon-x', 16, 'close icon inside')}
+  <div class="header tw-flex tw-items-center tw-justify-between">
+    <div>${itemTitleHtml}</div>
+    <div class="ui dropdown dialog-header-options tw-mr-8 tw-hidden">
+      ${i18nTextOptions}
+      ${svg('octicon-triangle-down', 14, 'dropdown icon')}
+      <div class="menu">
+        <div class="item red text" data-option-item="delete">${i18nTextDeleteFromHistory}</div>
+      </div>
+    </div>
+  </div>
+  <div class="comment-diff-data is-loading"></div>
+</div>`);
+  $dialog.appendTo($('body'));
+  $dialog.find('.dialog-header-options').dropdown({
+    showOnFocus: false,
+    allowReselection: true,
+    async onChange(_value, _text, $item) {
+      const optionItem = $item.data('option-item');
+      if (optionItem === 'delete') {
+        if (window.confirm(i18nTextDeleteFromHistoryConfirm)) {
+          try {
+            const params = new URLSearchParams();
+            params.append('comment_id', commentId);
+            params.append('history_id', historyId);
+
+            const response = await POST(`${issueBaseUrl}/content-history/soft-delete?${params.toString()}`);
+            const resp = await response.json();
+
+            if (resp.ok) {
+              $dialog.modal('hide');
+            } else {
+              showErrorToast(resp.message);
+            }
+          } catch (error) {
+            console.error('Error:', error);
+            showErrorToast('An error occurred while deleting the history.');
+          }
+        }
+      } else { // required by eslint
+        showErrorToast(`unknown option item: ${optionItem}`);
+      }
+    },
+    onHide() {
+      $(this).dropdown('clear', true);
+    },
+  });
+  $dialog.modal({
+    async onShow() {
+      try {
+        const params = new URLSearchParams();
+        params.append('comment_id', commentId);
+        params.append('history_id', historyId);
+
+        const url = `${issueBaseUrl}/content-history/detail?${params.toString()}`;
+        const response = await GET(url);
+        const resp = await response.json();
+
+        const commentDiffData = $dialog.find('.comment-diff-data')[0];
+        commentDiffData?.classList.remove('is-loading');
+        commentDiffData.innerHTML = resp.diffHtml;
+        // there is only one option "item[data-option-item=delete]", so the dropdown can be entirely shown/hidden.
+        if (resp.canSoftDelete) {
+          showElem($dialog.find('.dialog-header-options'));
+        }
+      } catch (error) {
+        console.error('Error:', error);
+      }
+    },
+    onHidden() {
+      $dialog.remove();
+    },
+  }).modal('show');
+}
+
+function showContentHistoryMenu(issueBaseUrl, $item, commentId) {
+  const $headerLeft = $item.find('.comment-header-left');
+  const menuHtml = `
+  <div class="ui dropdown interact-fg content-history-menu" data-comment-id="${commentId}">
+    &bull; ${i18nTextEdited}${svg('octicon-triangle-down', 14, 'dropdown icon')}
+    <div class="menu">
+    </div>
+  </div>`;
+
+  $headerLeft.find(`.content-history-menu`).remove();
+  $headerLeft.append($(menuHtml));
+  $headerLeft.find('.dropdown').dropdown({
+    action: 'hide',
+    apiSettings: {
+      cache: false,
+      url: `${issueBaseUrl}/content-history/list?comment_id=${commentId}`,
+    },
+    saveRemoteData: false,
+    onHide() {
+      $(this).dropdown('change values', null);
+    },
+    onChange(value, itemHtml, $item) {
+      if (value && !$item.find('[data-history-is-deleted=1]').length) {
+        showContentHistoryDetail(issueBaseUrl, commentId, value, itemHtml);
+      }
+    },
+  });
+}
+
+export async function initRepoIssueContentHistory() {
+  const issueIndex = $('#issueIndex').val();
+  if (!issueIndex) return;
+
+  const $itemIssue = $('.repository.issue .timeline-item.comment.first'); // issue(PR) main content
+  const $comments = $('.repository.issue .comment-list .comment'); // includes: issue(PR) comments, review comments, code comments
+  if (!$itemIssue.length && !$comments.length) return;
+
+  const repoLink = $('#repolink').val();
+  const issueBaseUrl = `${appSubUrl}/${repoLink}/issues/${issueIndex}`;
+
+  try {
+    const response = await GET(`${issueBaseUrl}/content-history/overview`);
+    const resp = await response.json();
+
+    i18nTextEdited = resp.i18n.textEdited;
+    i18nTextDeleteFromHistory = resp.i18n.textDeleteFromHistory;
+    i18nTextDeleteFromHistoryConfirm = resp.i18n.textDeleteFromHistoryConfirm;
+    i18nTextOptions = resp.i18n.textOptions;
+
+    if (resp.editedHistoryCountMap[0] && $itemIssue.length) {
+      showContentHistoryMenu(issueBaseUrl, $itemIssue, '0');
+    }
+    for (const [commentId, _editedCount] of Object.entries(resp.editedHistoryCountMap)) {
+      if (commentId === '0') continue;
+      const $itemComment = $(`#issuecomment-${commentId}`);
+      showContentHistoryMenu(issueBaseUrl, $itemComment, commentId);
+    }
+  } catch (error) {
+    console.error('Error:', error);
+  }
+}
diff --git a/web_src/js/features/repo-issue-list.js b/web_src/js/features/repo-issue-list.js
new file mode 100644
index 00000000..92f058c4
--- /dev/null
+++ b/web_src/js/features/repo-issue-list.js
@@ -0,0 +1,245 @@
+import $ from 'jquery';
+import {updateIssuesMeta} from './repo-issue.js';
+import {toggleElem, hideElem, isElemHidden} from '../utils/dom.js';
+import {htmlEscape} from 'escape-goat';
+import {confirmModal} from './comp/ConfirmModal.js';
+import {showErrorToast} from '../modules/toast.js';
+import {createSortable} from '../modules/sortable.js';
+import {DELETE, POST} from '../modules/fetch.js';
+import {parseDom} from '../utils.js';
+
+function initRepoIssueListCheckboxes() {
+  const issueSelectAll = document.querySelector('.issue-checkbox-all');
+  if (!issueSelectAll) return; // logged out state
+  const issueCheckboxes = document.querySelectorAll('.issue-checkbox');
+
+  const syncIssueSelectionState = () => {
+    const checkedCheckboxes = Array.from(issueCheckboxes).filter((el) => el.checked);
+    const anyChecked = Boolean(checkedCheckboxes.length);
+    const allChecked = anyChecked && checkedCheckboxes.length === issueCheckboxes.length;
+
+    if (allChecked) {
+      issueSelectAll.checked = true;
+      issueSelectAll.indeterminate = false;
+    } else if (anyChecked) {
+      issueSelectAll.checked = false;
+      issueSelectAll.indeterminate = true;
+    } else {
+      issueSelectAll.checked = false;
+      issueSelectAll.indeterminate = false;
+    }
+    // if any issue is selected, show the action panel, otherwise show the filter panel
+    toggleElem($('#issue-filters'), !anyChecked);
+    toggleElem($('#issue-actions'), anyChecked);
+    // there are two panels but only one select-all checkbox, so move the checkbox to the visible panel
+    const panels = document.querySelectorAll('#issue-filters, #issue-actions');
+    const visiblePanel = Array.from(panels).find((el) => !isElemHidden(el));
+    const toolbarLeft = visiblePanel.querySelector('.issue-list-toolbar-left');
+    toolbarLeft.prepend(issueSelectAll);
+  };
+
+  for (const el of issueCheckboxes) {
+    el.addEventListener('change', syncIssueSelectionState);
+  }
+
+  issueSelectAll.addEventListener('change', () => {
+    for (const el of issueCheckboxes) {
+      el.checked = issueSelectAll.checked;
+    }
+    syncIssueSelectionState();
+  });
+
+  $('.issue-action').on('click', async function (e) {
+    e.preventDefault();
+
+    const url = this.getAttribute('data-url');
+    let action = this.getAttribute('data-action');
+    let elementId = this.getAttribute('data-element-id');
+    let issueIDs = [];
+    for (const el of document.querySelectorAll('.issue-checkbox:checked')) {
+      issueIDs.push(el.getAttribute('data-issue-id'));
+    }
+    issueIDs = issueIDs.join(',');
+    if (!issueIDs) return;
+
+    // for assignee
+    if (elementId === '0' && url.endsWith('/assignee')) {
+      elementId = '';
+      action = 'clear';
+    }
+
+    // for toggle
+    if (action === 'toggle' && e.altKey) {
+      action = 'toggle-alt';
+    }
+
+    // for delete
+    if (action === 'delete') {
+      const confirmText = e.target.getAttribute('data-action-delete-confirm');
+      if (!await confirmModal({content: confirmText, buttonColor: 'orange'})) {
+        return;
+      }
+    }
+
+    try {
+      await updateIssuesMeta(url, action, issueIDs, elementId);
+      window.location.reload();
+    } catch (err) {
+      showErrorToast(err.responseJSON?.error ?? err.message);
+    }
+  });
+}
+
+function initRepoIssueListAuthorDropdown() {
+  const $searchDropdown = $('.user-remote-search');
+  if (!$searchDropdown.length) return;
+
+  let searchUrl = $searchDropdown[0].getAttribute('data-search-url');
+  const actionJumpUrl = $searchDropdown[0].getAttribute('data-action-jump-url');
+  const selectedUserId = $searchDropdown[0].getAttribute('data-selected-user-id');
+  if (!searchUrl.includes('?')) searchUrl += '?';
+
+  $searchDropdown.dropdown('setting', {
+    fullTextSearch: true,
+    selectOnKeydown: false,
+    apiSettings: {
+      cache: false,
+      url: `${searchUrl}&q={query}`,
+      onResponse(resp) {
+        // the content is provided by backend IssuePosters handler
+        const processedResults = []; // to be used by dropdown to generate menu items
+        for (const item of resp.results) {
+          let html = `<img class="ui avatar tw-align-middle" src="${htmlEscape(item.avatar_link)}" aria-hidden="true" alt="" width="20" height="20"><span class="gt-ellipsis">${htmlEscape(item.username)}</span>`;
+          if (item.full_name) html += `<span class="search-fullname tw-ml-2">${htmlEscape(item.full_name)}</span>`;
+          processedResults.push({value: item.user_id, name: html});
+        }
+        resp.results = processedResults;
+        return resp;
+      },
+    },
+    action: (_text, value) => {
+      window.location.href = actionJumpUrl.replace('{user_id}', encodeURIComponent(value));
+    },
+    onShow: () => {
+      $searchDropdown.dropdown('filter', ' '); // trigger a search on first show
+    },
+  });
+
+  // we want to generate the dropdown menu items by ourselves, replace its internal setup functions
+  const dropdownSetup = {...$searchDropdown.dropdown('internal', 'setup')};
+  const dropdownTemplates = $searchDropdown.dropdown('setting', 'templates');
+  $searchDropdown.dropdown('internal', 'setup', dropdownSetup);
+  dropdownSetup.menu = function (values) {
+    const menu = $searchDropdown.find('> .menu')[0];
+    // remove old dynamic items
+    for (const el of menu.querySelectorAll(':scope > .dynamic-item')) {
+      el.remove();
+    }
+
+    const newMenuHtml = dropdownTemplates.menu(values, $searchDropdown.dropdown('setting', 'fields'), true /* html */, $searchDropdown.dropdown('setting', 'className'));
+    if (newMenuHtml) {
+      const newMenuItems = parseDom(newMenuHtml, 'text/html').querySelectorAll('body > div');
+      for (const newMenuItem of newMenuItems) {
+        newMenuItem.classList.add('dynamic-item');
+      }
+      const div = document.createElement('div');
+      div.classList.add('divider', 'dynamic-item');
+      menu.append(div, ...newMenuItems);
+    }
+    $searchDropdown.dropdown('refresh');
+    // defer our selection to the next tick, because dropdown will set the selection item after this `menu` function
+    setTimeout(() => {
+      for (const el of menu.querySelectorAll('.item.active, .item.selected')) {
+        el.classList.remove('active', 'selected');
+      }
+      menu.querySelector(`.item[data-value="${selectedUserId}"]`)?.classList.add('selected');
+    }, 0);
+  };
+}
+
+function initPinRemoveButton() {
+  for (const button of document.getElementsByClassName('issue-card-unpin')) {
+    button.addEventListener('click', async (event) => {
+      const el = event.currentTarget;
+      const id = Number(el.getAttribute('data-issue-id'));
+
+      // Send the unpin request
+      const response = await DELETE(el.getAttribute('data-unpin-url'));
+      if (response.ok) {
+        // Delete the tooltip
+        el._tippy.destroy();
+        // Remove the Card
+        el.closest(`div.issue-card[data-issue-id="${id}"]`).remove();
+      }
+    });
+  }
+}
+
+async function pinMoveEnd(e) {
+  const url = e.item.getAttribute('data-move-url');
+  const id = Number(e.item.getAttribute('data-issue-id'));
+  await POST(url, {data: {id, position: e.newIndex + 1}});
+}
+
+async function initIssuePinSort() {
+  const pinDiv = document.getElementById('issue-pins');
+
+  if (pinDiv === null) return;
+
+  // If the User is not a Repo Admin, we don't need to proceed
+  if (!pinDiv.hasAttribute('data-is-repo-admin')) return;
+
+  initPinRemoveButton();
+
+  // If only one issue pinned, we don't need to make this Sortable
+  if (pinDiv.children.length < 2) return;
+
+  createSortable(pinDiv, {
+    group: 'shared',
+    onEnd: pinMoveEnd,
+  });
+}
+
+function initArchivedLabelFilter() {
+  const archivedLabelEl = document.querySelector('#archived-filter-checkbox');
+  if (!archivedLabelEl) {
+    return;
+  }
+
+  const url = new URL(window.location.href);
+  const archivedLabels = document.querySelectorAll('[data-is-archived]');
+
+  if (!archivedLabels.length) {
+    hideElem('.archived-label-filter');
+    return;
+  }
+  const selectedLabels = (url.searchParams.get('labels') || '')
+    .split(',')
+    .map((id) => id < 0 ? `${~id + 1}` : id); // selectedLabels contains -ve ids, which are excluded so convert any -ve value id to +ve
+
+  const archivedElToggle = () => {
+    for (const label of archivedLabels) {
+      const id = label.getAttribute('data-label-id');
+      toggleElem(label, archivedLabelEl.checked || selectedLabels.includes(id));
+    }
+  };
+
+  archivedElToggle();
+  archivedLabelEl.addEventListener('change', () => {
+    archivedElToggle();
+    if (archivedLabelEl.checked) {
+      url.searchParams.set('archived', 'true');
+    } else {
+      url.searchParams.delete('archived');
+    }
+    window.location.href = url.href;
+  });
+}
+
+export function initRepoIssueList() {
+  if (!document.querySelectorAll('.page-content.repository.issue-list, .page-content.repository.milestone-issue-list').length) return;
+  initRepoIssueListCheckboxes();
+  initRepoIssueListAuthorDropdown();
+  initIssuePinSort();
+  initArchivedLabelFilter();
+}
diff --git a/web_src/js/features/repo-issue-pr-form.js b/web_src/js/features/repo-issue-pr-form.js
new file mode 100644
index 00000000..7b26e643
--- /dev/null
+++ b/web_src/js/features/repo-issue-pr-form.js
@@ -0,0 +1,10 @@
+import {createApp} from 'vue';
+import PullRequestMergeForm from '../components/PullRequestMergeForm.vue';
+
+export function initRepoPullRequestMergeForm() {
+  const el = document.getElementById('pull-request-merge-form');
+  if (!el) return;
+
+  const view = createApp(PullRequestMergeForm);
+  view.mount(el);
+}
diff --git a/web_src/js/features/repo-issue-pr-status.js b/web_src/js/features/repo-issue-pr-status.js
new file mode 100644
index 00000000..7890b9c4
--- /dev/null
+++ b/web_src/js/features/repo-issue-pr-status.js
@@ -0,0 +1,10 @@
+export function initRepoPullRequestCommitStatus() {
+  for (const btn of document.querySelectorAll('.commit-status-hide-checks')) {
+    const panel = btn.closest('.commit-status-panel');
+    const list = panel.querySelector('.commit-status-list');
+    btn.addEventListener('click', () => {
+      list.style.maxHeight = list.style.maxHeight ? '' : '0px'; // toggle
+      btn.textContent = btn.getAttribute(list.style.maxHeight ? 'data-show-all' : 'data-hide-all');
+    });
+  }
+}
diff --git a/web_src/js/features/repo-issue.js b/web_src/js/features/repo-issue.js
new file mode 100644
index 00000000..ff8faa94
--- /dev/null
+++ b/web_src/js/features/repo-issue.js
@@ -0,0 +1,733 @@
+import $ from 'jquery';
+import {htmlEscape} from 'escape-goat';
+import {showTemporaryTooltip, createTippy} from '../modules/tippy.js';
+import {hideElem, showElem, toggleElem} from '../utils/dom.js';
+import {setFileFolding} from './file-fold.js';
+import {getComboMarkdownEditor, initComboMarkdownEditor} from './comp/ComboMarkdownEditor.js';
+import {toAbsoluteUrl} from '../utils.js';
+import {initDropzone} from './common-global.js';
+import {POST, GET} from '../modules/fetch.js';
+import {showErrorToast} from '../modules/toast.js';
+
+const {appSubUrl} = window.config;
+
+export function initRepoIssueTimeTracking() {
+  $(document).on('click', '.issue-add-time', () => {
+    $('.issue-start-time-modal').modal({
+      duration: 200,
+      onApprove() {
+        $('#add_time_manual_form').trigger('submit');
+      },
+    }).modal('show');
+    $('.issue-start-time-modal input').on('keydown', (e) => {
+      if ((e.keyCode || e.key) === 13) {
+        $('#add_time_manual_form').trigger('submit');
+      }
+    });
+  });
+  $(document).on('click', '.issue-start-time, .issue-stop-time', () => {
+    $('#toggle_stopwatch_form').trigger('submit');
+  });
+  $(document).on('click', '.issue-cancel-time', () => {
+    $('#cancel_stopwatch_form').trigger('submit');
+  });
+  $(document).on('click', 'button.issue-delete-time', function () {
+    const sel = `.issue-delete-time-modal[data-id="${$(this).data('id')}"]`;
+    $(sel).modal({
+      duration: 200,
+      onApprove() {
+        $(`${sel} form`).trigger('submit');
+      },
+    }).modal('show');
+  });
+}
+
+async function updateDeadline(deadlineString) {
+  hideElem('#deadline-err-invalid-date');
+  document.getElementById('deadline-loader')?.classList.add('is-loading');
+
+  let realDeadline = null;
+  if (deadlineString !== '') {
+    const newDate = Date.parse(deadlineString);
+
+    if (Number.isNaN(newDate)) {
+      document.getElementById('deadline-loader')?.classList.remove('is-loading');
+      showElem('#deadline-err-invalid-date');
+      return false;
+    }
+    realDeadline = new Date(newDate);
+  }
+
+  try {
+    const response = await POST(document.getElementById('update-issue-deadline-form').getAttribute('action'), {
+      data: {due_date: realDeadline},
+    });
+
+    if (response.ok) {
+      window.location.reload();
+    } else {
+      throw new Error('Invalid response');
+    }
+  } catch (error) {
+    console.error(error);
+    document.getElementById('deadline-loader').classList.remove('is-loading');
+    showElem('#deadline-err-invalid-date');
+  }
+}
+
+export function initRepoIssueDue() {
+  $(document).on('click', '.issue-due-edit', () => {
+    toggleElem('#deadlineForm');
+  });
+  $(document).on('click', '.issue-due-remove', () => {
+    updateDeadline('');
+  });
+  $(document).on('submit', '.issue-due-form', () => {
+    updateDeadline($('#deadlineDate').val());
+    return false;
+  });
+}
+
+/**
+ * @param {HTMLElement} item
+ */
+function excludeLabel(item) {
+  const href = item.getAttribute('href');
+  const id = item.getAttribute('data-label-id');
+
+  const regStr = `labels=((?:-?[0-9]+%2c)*)(${id})((?:%2c-?[0-9]+)*)&`;
+  const newStr = 'labels=$1-$2$3&';
+
+  window.location = href.replace(new RegExp(regStr), newStr);
+}
+
+export function initRepoIssueSidebarList() {
+  const repolink = $('#repolink').val();
+  const repoId = $('#repoId').val();
+  const crossRepoSearch = $('#crossRepoSearch').val();
+  const tp = $('#type').val();
+  let issueSearchUrl = `${appSubUrl}/${repolink}/issues/search?q={query}&type=${tp}`;
+  if (crossRepoSearch === 'true') {
+    issueSearchUrl = `${appSubUrl}/issues/search?q={query}&priority_repo_id=${repoId}&type=${tp}`;
+  }
+  $('#new-dependency-drop-list')
+    .dropdown({
+      apiSettings: {
+        url: issueSearchUrl,
+        onResponse(response) {
+          const filteredResponse = {success: true, results: []};
+          const currIssueId = $('#new-dependency-drop-list').data('issue-id');
+          // Parse the response from the api to work with our dropdown
+          $.each(response, (_i, issue) => {
+            // Don't list current issue in the dependency list.
+            if (issue.id === currIssueId) {
+              return;
+            }
+            filteredResponse.results.push({
+              name: `#${issue.number} ${htmlEscape(issue.title)
+              }<div class="text small tw-break-anywhere">${htmlEscape(issue.repository.full_name)}</div>`,
+              value: issue.id,
+            });
+          });
+          return filteredResponse;
+        },
+        cache: false,
+      },
+
+      fullTextSearch: true,
+    });
+
+  $('.menu a.label-filter-item').each(function () {
+    $(this).on('click', function (e) {
+      if (e.altKey) {
+        e.preventDefault();
+        excludeLabel(this);
+      }
+    });
+  });
+
+  $('.menu .ui.dropdown.label-filter').on('keydown', (e) => {
+    if (e.altKey && e.keyCode === 13) {
+      const selectedItem = document.querySelector('.menu .ui.dropdown.label-filter .menu .item.selected');
+      if (selectedItem) {
+        excludeLabel(selectedItem);
+      }
+    }
+  });
+  $('.ui.dropdown.label-filter, .ui.dropdown.select-label').dropdown('setting', {'hideDividers': 'empty'}).dropdown('refreshItems');
+}
+
+export function initRepoIssueCommentDelete() {
+  // Delete comment
+  document.addEventListener('click', async (e) => {
+    if (!e.target.matches('.delete-comment')) return;
+    e.preventDefault();
+
+    const deleteButton = e.target;
+    if (window.confirm(deleteButton.getAttribute('data-locale'))) {
+      try {
+        const response = await POST(deleteButton.getAttribute('data-url'));
+        if (!response.ok) throw new Error('Failed to delete comment');
+
+        const conversationHolder = deleteButton.closest('.conversation-holder');
+        const parentTimelineItem = deleteButton.closest('.timeline-item');
+        const parentTimelineGroup = deleteButton.closest('.timeline-item-group');
+
+        // Check if this was a pending comment.
+        if (conversationHolder?.querySelector('.pending-label')) {
+          const counter = document.querySelector('#review-box .review-comments-counter');
+          let num = parseInt(counter?.getAttribute('data-pending-comment-number')) - 1 || 0;
+          num = Math.max(num, 0);
+          counter.setAttribute('data-pending-comment-number', num);
+          counter.textContent = String(num);
+        }
+
+        document.getElementById(deleteButton.getAttribute('data-comment-id'))?.remove();
+
+        if (conversationHolder && !conversationHolder.querySelector('.comment')) {
+          const path = conversationHolder.getAttribute('data-path');
+          const side = conversationHolder.getAttribute('data-side');
+          const idx = conversationHolder.getAttribute('data-idx');
+          const lineType = conversationHolder.closest('tr').getAttribute('data-line-type');
+
+          if (lineType === 'same') {
+            document.querySelector(`[data-path="${path}"] .add-code-comment[data-idx="${idx}"]`).classList.remove('tw-invisible');
+          } else {
+            document.querySelector(`[data-path="${path}"] .add-code-comment[data-side="${side}"][data-idx="${idx}"]`).classList.remove('tw-invisible');
+          }
+
+          conversationHolder.remove();
+        }
+
+        // Check if there is no review content, move the time avatar upward to avoid overlapping the content below.
+        if (!parentTimelineGroup?.querySelector('.timeline-item.comment') && !parentTimelineItem?.querySelector('.conversation-holder')) {
+          const timelineAvatar = parentTimelineGroup?.querySelector('.timeline-avatar');
+          timelineAvatar?.classList.remove('timeline-avatar-offset');
+        }
+      } catch (error) {
+        console.error(error);
+      }
+    }
+  });
+}
+
+export function initRepoIssueDependencyDelete() {
+  // Delete Issue dependency
+  $(document).on('click', '.delete-dependency-button', (e) => {
+    const id = e.currentTarget.getAttribute('data-id');
+    const type = e.currentTarget.getAttribute('data-type');
+
+    $('.remove-dependency').modal({
+      closable: false,
+      duration: 200,
+      onApprove: () => {
+        $('#removeDependencyID').val(id);
+        $('#dependencyType').val(type);
+        $('#removeDependencyForm').trigger('submit');
+      },
+    }).modal('show');
+  });
+}
+
+export function initRepoIssueCodeCommentCancel() {
+  // Cancel inline code comment
+  document.addEventListener('click', (e) => {
+    if (!e.target.matches('.cancel-code-comment')) return;
+
+    const form = e.target.closest('form');
+    if (form?.classList.contains('comment-form')) {
+      hideElem(form);
+      showElem(form.closest('.comment-code-cloud')?.querySelectorAll('button.comment-form-reply'));
+    } else {
+      form.closest('.comment-code-cloud')?.remove();
+    }
+  });
+}
+
+export function initRepoPullRequestUpdate() {
+  // Pull Request update button
+  const pullUpdateButton = document.querySelector('.update-button > button');
+  if (!pullUpdateButton) return;
+
+  pullUpdateButton.addEventListener('click', async function (e) {
+    e.preventDefault();
+    const redirect = this.getAttribute('data-redirect');
+    this.classList.add('is-loading');
+    let response;
+    try {
+      response = await POST(this.getAttribute('data-do'));
+    } catch (error) {
+      console.error(error);
+    } finally {
+      this.classList.remove('is-loading');
+    }
+    let data;
+    try {
+      data = await response?.json(); // the response is probably not a JSON
+    } catch (error) {
+      console.error(error);
+    }
+    if (data?.redirect) {
+      window.location.href = data.redirect;
+    } else if (redirect) {
+      window.location.href = redirect;
+    } else {
+      window.location.reload();
+    }
+  });
+
+  $('.update-button > .dropdown').dropdown({
+    onChange(_text, _value, $choice) {
+      const url = $choice[0].getAttribute('data-do');
+      if (url) {
+        const buttonText = pullUpdateButton.querySelector('.button-text');
+        if (buttonText) {
+          buttonText.textContent = $choice.text();
+        }
+        pullUpdateButton.setAttribute('data-do', url);
+      }
+    },
+  });
+}
+
+export function initRepoPullRequestAllowMaintainerEdit() {
+  const wrapper = document.getElementById('allow-edits-from-maintainers');
+  if (!wrapper) return;
+  const checkbox = wrapper.querySelector('input[type="checkbox"]');
+  checkbox.addEventListener('input', async () => {
+    const url = `${wrapper.getAttribute('data-url')}/set_allow_maintainer_edit`;
+    wrapper.classList.add('is-loading');
+    try {
+      const resp = await POST(url, {data: new URLSearchParams({allow_maintainer_edit: checkbox.checked})});
+      if (!resp.ok) {
+        throw new Error('Failed to update maintainer edit permission');
+      }
+      const data = await resp.json();
+      checkbox.checked = data.allow_maintainer_edit;
+    } catch (error) {
+      checkbox.checked = !checkbox.checked;
+      console.error(error);
+      showTemporaryTooltip(wrapper, wrapper.getAttribute('data-prompt-error'));
+    } finally {
+      wrapper.classList.remove('is-loading');
+    }
+  });
+}
+
+export function initRepoIssueReferenceRepositorySearch() {
+  $('.issue_reference_repository_search')
+    .dropdown({
+      apiSettings: {
+        url: `${appSubUrl}/repo/search?q={query}&limit=20`,
+        onResponse(response) {
+          const filteredResponse = {success: true, results: []};
+          $.each(response.data, (_r, repo) => {
+            filteredResponse.results.push({
+              name: htmlEscape(repo.repository.full_name),
+              value: repo.repository.full_name,
+            });
+          });
+          return filteredResponse;
+        },
+        cache: false,
+      },
+      onChange(_value, _text, $choice) {
+        const $form = $choice.closest('form');
+        if (!$form.length) return;
+
+        $form[0].setAttribute('action', `${appSubUrl}/${_text}/issues/new`);
+      },
+      fullTextSearch: true,
+    });
+}
+
+export function initRepoIssueWipTitle() {
+  $('.title_wip_desc > a').on('click', (e) => {
+    e.preventDefault();
+
+    const $issueTitle = $('#issue_title');
+    $issueTitle.trigger('focus');
+    const value = $issueTitle.val().trim().toUpperCase();
+
+    const wipPrefixes = $('.title_wip_desc').data('wip-prefixes');
+    for (const prefix of wipPrefixes) {
+      if (value.startsWith(prefix.toUpperCase())) {
+        return;
+      }
+    }
+
+    $issueTitle.val(`${wipPrefixes[0]} ${$issueTitle.val()}`);
+  });
+}
+
+export async function updateIssuesMeta(url, action, issue_ids, id) {
+  try {
+    const response = await POST(url, {data: new URLSearchParams({action, issue_ids, id})});
+    if (!response.ok) {
+      throw new Error('Failed to update issues meta');
+    }
+  } catch (error) {
+    console.error(error);
+  }
+}
+
+export function initRepoIssueComments() {
+  if (!$('.repository.view.issue .timeline').length) return;
+
+  $('.re-request-review').on('click', async function (e) {
+    e.preventDefault();
+    const url = this.getAttribute('data-update-url');
+    const issueId = this.getAttribute('data-issue-id');
+    const id = this.getAttribute('data-id');
+    const isChecked = this.classList.contains('checked');
+
+    await updateIssuesMeta(url, isChecked ? 'detach' : 'attach', issueId, id);
+    window.location.reload();
+  });
+
+  document.addEventListener('click', (e) => {
+    const urlTarget = document.querySelector(':target');
+    if (!urlTarget) return;
+
+    const urlTargetId = urlTarget.id;
+    if (!urlTargetId) return;
+
+    if (!/^(issue|pull)(comment)?-\d+$/.test(urlTargetId)) return;
+
+    if (!e.target.closest(`#${urlTargetId}`)) {
+      const scrollPosition = $(window).scrollTop();
+      window.location.hash = '';
+      $(window).scrollTop(scrollPosition);
+      window.history.pushState(null, null, ' ');
+    }
+  });
+}
+
+export async function handleReply($el) {
+  hideElem($el);
+  const $form = $el.closest('.comment-code-cloud').find('.comment-form');
+  showElem($form);
+
+  const $textarea = $form.find('textarea');
+  let editor = getComboMarkdownEditor($textarea);
+  if (!editor) {
+    // FIXME: the initialization of the dropzone is not consistent.
+    // When the page is loaded, the dropzone is initialized by initGlobalDropzone, but the editor is not initialized.
+    // When the form is submitted and partially reload, none of them is initialized.
+    const dropzone = $form.find('.dropzone')[0];
+    if (!dropzone.dropzone) initDropzone(dropzone);
+    editor = await initComboMarkdownEditor($form.find('.combo-markdown-editor'));
+  }
+  editor.focus();
+  return editor;
+}
+
+export function initRepoPullRequestReview() {
+  if (window.location.hash && window.location.hash.startsWith('#issuecomment-')) {
+    // set scrollRestoration to 'manual' when there is a hash in url, so that the scroll position will not be remembered after refreshing
+    if (window.history.scrollRestoration !== 'manual') {
+      window.history.scrollRestoration = 'manual';
+    }
+    const commentDiv = document.querySelector(window.location.hash);
+    if (commentDiv) {
+      // get the name of the parent id
+      const groupID = commentDiv.closest('div[id^="code-comments-"]')?.getAttribute('id');
+      if (groupID && groupID.startsWith('code-comments-')) {
+        const id = groupID.slice(14);
+        const ancestorDiffBox = commentDiv.closest('.diff-file-box');
+        // on pages like conversation, there is no diff header
+        const diffHeader = ancestorDiffBox?.querySelector('.diff-file-header');
+
+        // offset is for scrolling
+        let offset = 30;
+        if (diffHeader) {
+          offset += $('.diff-detail-box').outerHeight() + $(diffHeader).outerHeight();
+        }
+
+        hideElem(`#show-outdated-${id}`);
+        showElem(`#code-comments-${id}, #code-preview-${id}, #hide-outdated-${id}`);
+        // if the comment box is folded, expand it
+        if (ancestorDiffBox?.getAttribute('data-folded') === 'true') {
+          setFileFolding(ancestorDiffBox, ancestorDiffBox.querySelector('.fold-file'), false);
+        }
+
+        window.scrollTo({
+          top: $(commentDiv).offset().top - offset,
+          behavior: 'instant',
+        });
+      }
+    }
+  }
+
+  $(document).on('click', '.show-outdated', function (e) {
+    e.preventDefault();
+    const id = this.getAttribute('data-comment');
+    hideElem(this);
+    showElem(`#code-comments-${id}`);
+    showElem(`#code-preview-${id}`);
+    showElem(`#hide-outdated-${id}`);
+  });
+
+  $(document).on('click', '.hide-outdated', function (e) {
+    e.preventDefault();
+    const id = this.getAttribute('data-comment');
+    hideElem(this);
+    hideElem(`#code-comments-${id}`);
+    hideElem(`#code-preview-${id}`);
+    showElem(`#show-outdated-${id}`);
+  });
+
+  $(document).on('click', 'button.comment-form-reply', async function (e) {
+    e.preventDefault();
+    await handleReply($(this));
+  });
+
+  const $reviewBox = $('.review-box-panel');
+  if ($reviewBox.length === 1) {
+    const _promise = initComboMarkdownEditor($reviewBox.find('.combo-markdown-editor'));
+  }
+
+  // The following part is only for diff views
+  if (!$('.repository.pull.diff').length) return;
+
+  const $reviewBtn = $('.js-btn-review');
+  const $panel = $reviewBtn.parent().find('.review-box-panel');
+  const $closeBtn = $panel.find('.close');
+
+  if ($reviewBtn.length && $panel.length) {
+    const tippy = createTippy($reviewBtn[0], {
+      content: $panel[0],
+      placement: 'bottom',
+      trigger: 'click',
+      maxWidth: 'none',
+      interactive: true,
+      hideOnClick: true,
+    });
+
+    $closeBtn.on('click', (e) => {
+      e.preventDefault();
+      tippy.hide();
+    });
+  }
+
+  $(document).on('click', '.add-code-comment', async function (e) {
+    if (e.target.classList.contains('btn-add-single')) return; // https://github.com/go-gitea/gitea/issues/4745
+    e.preventDefault();
+
+    const isSplit = this.closest('.code-diff')?.classList.contains('code-diff-split');
+    const side = this.getAttribute('data-side');
+    const idx = this.getAttribute('data-idx');
+    const path = this.closest('[data-path]')?.getAttribute('data-path');
+    const tr = this.closest('tr');
+    const lineType = tr.getAttribute('data-line-type');
+
+    const ntr = tr.nextElementSibling;
+    let $ntr = $(ntr);
+    if (!ntr?.classList.contains('add-comment')) {
+      $ntr = $(`
+        <tr class="add-comment" data-line-type="${lineType}">
+          ${isSplit ? `
+            <td class="add-comment-left" colspan="4"></td>
+            <td class="add-comment-right" colspan="4"></td>
+          ` : `
+            <td class="add-comment-left add-comment-right" colspan="5"></td>
+          `}
+        </tr>`);
+      $(tr).after($ntr);
+    }
+
+    const $td = $ntr.find(`.add-comment-${side}`);
+    const $commentCloud = $td.find('.comment-code-cloud');
+    if (!$commentCloud.length && !$ntr.find('button[name="pending_review"]').length) {
+      try {
+        const response = await GET(this.closest('[data-new-comment-url]')?.getAttribute('data-new-comment-url'));
+        const html = await response.text();
+        $td.html(html);
+        $td.find("input[name='line']").val(idx);
+        $td.find("input[name='side']").val(side === 'left' ? 'previous' : 'proposed');
+        $td.find("input[name='path']").val(path);
+
+        initDropzone($td.find('.dropzone')[0]);
+        const editor = await initComboMarkdownEditor($td.find('.combo-markdown-editor'));
+        editor.focus();
+      } catch (error) {
+        console.error(error);
+      }
+    }
+  });
+}
+
+export function initRepoIssueReferenceIssue() {
+  // Reference issue
+  $(document).on('click', '.reference-issue', function (event) {
+    const $this = $(this);
+    const content = $(`#${$this.data('target')}`).text();
+    const poster = $this.data('poster-username');
+    const reference = toAbsoluteUrl($this.data('reference'));
+    const $modal = $($this.data('modal'));
+    $modal.find('textarea[name="content"]').val(`${content}\n\n_Originally posted by @${poster} in ${reference}_`);
+    $modal.modal('show');
+
+    event.preventDefault();
+  });
+}
+
+export function initRepoIssueWipToggle() {
+  // Toggle WIP
+  $('.toggle-wip a, .toggle-wip button').on('click', async (e) => {
+    e.preventDefault();
+    const toggleWip = e.currentTarget.closest('.toggle-wip');
+    const title = toggleWip.getAttribute('data-title');
+    const wipPrefixes = JSON.parse(toggleWip.getAttribute('data-wip-prefixes'));
+    const updateUrl = toggleWip.getAttribute('data-update-url');
+    const prefix = wipPrefixes.find((prefix) => title.startsWith(prefix));
+
+    try {
+      const params = new URLSearchParams();
+      params.append('title', prefix !== undefined ? title.slice(prefix.length).trim() : `${wipPrefixes[0].trim()} ${title}`);
+
+      const response = await POST(updateUrl, {data: params});
+      if (!response.ok) {
+        throw new Error('Failed to toggle WIP status');
+      }
+      window.location.reload();
+    } catch (error) {
+      console.error(error);
+    }
+  });
+}
+
+export function initRepoIssueTitleEdit() {
+  const issueTitleDisplay = document.querySelector('#issue-title-display');
+  const issueTitleEditor = document.querySelector('#issue-title-editor');
+  if (!issueTitleEditor) return;
+
+  const issueTitleInput = issueTitleEditor.querySelector('input');
+  const oldTitle = issueTitleInput.getAttribute('data-old-title');
+  issueTitleDisplay.querySelector('#issue-title-edit-show').addEventListener('click', () => {
+    hideElem(issueTitleDisplay);
+    hideElem('#pull-desc-display');
+    showElem(issueTitleEditor);
+    showElem('#pull-desc-editor');
+    if (!issueTitleInput.value.trim()) {
+      issueTitleInput.value = oldTitle;
+    }
+    issueTitleInput.focus();
+  });
+  issueTitleEditor.querySelector('.ui.cancel.button').addEventListener('click', () => {
+    hideElem(issueTitleEditor);
+    hideElem('#pull-desc-editor');
+    showElem(issueTitleDisplay);
+    showElem('#pull-desc-display');
+  });
+
+  const pullDescEditor = document.querySelector('#pull-desc-editor'); // it may not exist for a merged PR
+  const prTargetUpdateUrl = pullDescEditor?.getAttribute('data-target-update-url');
+
+  const editSaveButton = issueTitleEditor.querySelector('.ui.primary.button');
+  const saveAndRefresh = async () => {
+    const newTitle = issueTitleInput.value.trim();
+    try {
+      if (newTitle && newTitle !== oldTitle) {
+        const resp = await POST(editSaveButton.getAttribute('data-update-url'), {data: new URLSearchParams({title: newTitle})});
+        if (!resp.ok) {
+          throw new Error(`Failed to update issue title: ${resp.statusText}`);
+        }
+      }
+      if (prTargetUpdateUrl) {
+        const newTargetBranch = document.querySelector('#pull-target-branch').getAttribute('data-branch');
+        const oldTargetBranch = document.querySelector('#branch_target').textContent;
+        if (newTargetBranch !== oldTargetBranch) {
+          const resp = await POST(prTargetUpdateUrl, {data: new URLSearchParams({target_branch: newTargetBranch})});
+          if (!resp.ok) {
+            throw new Error(`Failed to update PR target branch: ${resp.statusText}`);
+          }
+        }
+      }
+      window.location.reload();
+    } catch (error) {
+      console.error(error);
+      showErrorToast(error.message);
+    }
+  };
+  editSaveButton.addEventListener('click', saveAndRefresh);
+  issueTitleEditor.querySelector('input').addEventListener('ce-quick-submit', saveAndRefresh);
+}
+
+export function initRepoIssueBranchSelect() {
+  document.querySelector('#branch-select')?.addEventListener('click', (e) => {
+    const el = e.target.closest('.item[data-branch]');
+    if (!el) return;
+    const pullTargetBranch = document.querySelector('#pull-target-branch');
+    const baseName = pullTargetBranch.getAttribute('data-basename');
+    const branchNameNew = el.getAttribute('data-branch');
+    const branchNameOld = pullTargetBranch.getAttribute('data-branch');
+    pullTargetBranch.textContent = pullTargetBranch.textContent.replace(`${baseName}:${branchNameOld}`, `${baseName}:${branchNameNew}`);
+    pullTargetBranch.setAttribute('data-branch', branchNameNew);
+  });
+}
+
+export function initSingleCommentEditor($commentForm) {
+  // pages:
+  // * normal new issue/pr page, no status-button
+  // * issue/pr view page, with comment form, has status-button
+  const opts = {};
+  const statusButton = document.getElementById('status-button');
+  if (statusButton) {
+    opts.onContentChanged = (editor) => {
+      const statusText = statusButton.getAttribute(editor.value().trim() ? 'data-status-and-comment' : 'data-status');
+      statusButton.textContent = statusText;
+    };
+  }
+  initComboMarkdownEditor($commentForm.find('.combo-markdown-editor'), opts);
+}
+
+export function initIssueTemplateCommentEditors($commentForm) {
+  // pages:
+  // * new issue with issue template
+  const $comboFields = $commentForm.find('.combo-editor-dropzone');
+
+  const initCombo = async ($combo) => {
+    const $dropzoneContainer = $combo.find('.form-field-dropzone');
+    const $formField = $combo.find('.form-field-real');
+    const $markdownEditor = $combo.find('.combo-markdown-editor');
+
+    const editor = await initComboMarkdownEditor($markdownEditor, {
+      onContentChanged: (editor) => {
+        $formField.val(editor.value());
+      },
+    });
+
+    $formField.on('focus', async () => {
+      // deactivate all markdown editors
+      showElem($commentForm.find('.combo-editor-dropzone .form-field-real'));
+      hideElem($commentForm.find('.combo-editor-dropzone .combo-markdown-editor'));
+      hideElem($commentForm.find('.combo-editor-dropzone .form-field-dropzone'));
+
+      // activate this markdown editor
+      hideElem($formField);
+      showElem($markdownEditor);
+      showElem($dropzoneContainer);
+
+      await editor.switchToUserPreference();
+      editor.focus();
+    });
+  };
+
+  for (const el of $comboFields) {
+    initCombo($(el));
+  }
+}
+
+// This function used to show and hide archived label on issue/pr
+//  page in the sidebar where we select the labels
+//  If we have any archived label tagged to issue and pr. We will show that
+//  archived label with checked classed otherwise we will hide it
+//  with the help of this function.
+//  This function runs globally.
+export function initArchivedLabelHandler() {
+  if (!document.querySelector('.archived-label-hint')) return;
+  for (const label of document.querySelectorAll('[data-is-archived]')) {
+    toggleElem(label, label.classList.contains('checked'));
+  }
+}
diff --git a/web_src/js/features/repo-legacy.js b/web_src/js/features/repo-legacy.js
new file mode 100644
index 00000000..76de8daf
--- /dev/null
+++ b/web_src/js/features/repo-legacy.js
@@ -0,0 +1,628 @@
+import $ from 'jquery';
+import {
+  initRepoIssueBranchSelect, initRepoIssueCodeCommentCancel, initRepoIssueCommentDelete,
+  initRepoIssueComments, initRepoIssueDependencyDelete, initRepoIssueReferenceIssue,
+  initRepoIssueTitleEdit, initRepoIssueWipToggle,
+  initRepoPullRequestUpdate, updateIssuesMeta, handleReply, initIssueTemplateCommentEditors, initSingleCommentEditor,
+} from './repo-issue.js';
+import {initUnicodeEscapeButton} from './repo-unicode-escape.js';
+import {svg} from '../svg.js';
+import {htmlEscape} from 'escape-goat';
+import {initRepoBranchTagSelector} from '../components/RepoBranchTagSelector.vue';
+import {
+  initRepoCloneLink, initRepoCommonBranchOrTagDropdown, initRepoCommonFilterSearchDropdown,
+} from './repo-common.js';
+import {initCitationFileCopyContent} from './citation.js';
+import {initCompLabelEdit} from './comp/LabelEdit.js';
+import {initRepoDiffConversationNav} from './repo-diff.js';
+import {createDropzone} from './dropzone.js';
+import {showErrorToast} from '../modules/toast.js';
+import {initCommentContent, initMarkupContent} from '../markup/content.js';
+import {initCompReactionSelector} from './comp/ReactionSelector.js';
+import {initRepoSettingBranches} from './repo-settings.js';
+import {initRepoPullRequestMergeForm} from './repo-issue-pr-form.js';
+import {initRepoPullRequestCommitStatus} from './repo-issue-pr-status.js';
+import {hideElem, showElem} from '../utils/dom.js';
+import {getComboMarkdownEditor, initComboMarkdownEditor} from './comp/ComboMarkdownEditor.js';
+import {attachRefIssueContextPopup} from './contextpopup.js';
+import {POST, GET} from '../modules/fetch.js';
+
+const {csrfToken} = window.config;
+
+// if there are draft comments, confirm before reloading, to avoid losing comments
+function reloadConfirmDraftComment() {
+  const commentTextareas = [
+    document.querySelector('.edit-content-zone:not(.tw-hidden) textarea'),
+    document.querySelector('#comment-form textarea'),
+  ];
+  for (const textarea of commentTextareas) {
+    // Most users won't feel too sad if they lose a comment with 10 chars, they can re-type these in seconds.
+    // But if they have typed more (like 50) chars and the comment is lost, they will be very unhappy.
+    if (textarea && textarea.value.trim().length > 10) {
+      textarea.parentElement.scrollIntoView();
+      if (!window.confirm('Page will be reloaded, but there are draft comments. Continuing to reload will discard the comments. Continue?')) {
+        return;
+      }
+      break;
+    }
+  }
+  window.location.reload();
+}
+
+export function initRepoCommentForm() {
+  const $commentForm = $('.comment.form');
+  if (!$commentForm.length) return;
+
+  if ($commentForm.find('.field.combo-editor-dropzone').length) {
+    // at the moment, if a form has multiple combo-markdown-editors, it must be an issue template form
+    initIssueTemplateCommentEditors($commentForm);
+  } else if ($commentForm.find('.combo-markdown-editor').length) {
+    // it's quite unclear about the "comment form" elements, sometimes it's for issue comment, sometimes it's for file editor/uploader message
+    initSingleCommentEditor($commentForm);
+  }
+
+  function initBranchSelector() {
+    const $selectBranch = $('.ui.select-branch');
+    const $branchMenu = $selectBranch.find('.reference-list-menu');
+    const $isNewIssue = $branchMenu.hasClass('new-issue');
+    $branchMenu.find('.item:not(.no-select)').on('click', async function () {
+      const selectedValue = $(this).data('id');
+      const editMode = $('#editing_mode').val();
+      $($(this).data('id-selector')).val(selectedValue);
+      if ($isNewIssue) {
+        $selectBranch.find('.ui .branch-name').text($(this).data('name'));
+        return;
+      }
+
+      if (editMode === 'true') {
+        const form = document.getElementById('update_issueref_form');
+        const params = new URLSearchParams();
+        params.append('ref', selectedValue);
+        try {
+          await POST(form.getAttribute('action'), {data: params});
+          window.location.reload();
+        } catch (error) {
+          console.error(error);
+        }
+      } else if (editMode === '') {
+        $selectBranch.find('.ui .branch-name').text(selectedValue);
+      }
+    });
+    $selectBranch.find('.reference.column').on('click', function () {
+      hideElem($selectBranch.find('.scrolling.reference-list-menu'));
+      $selectBranch.find('.reference .text').removeClass('black');
+      showElem($($(this).data('target')));
+      $(this).find('.text').addClass('black');
+      return false;
+    });
+  }
+
+  initBranchSelector();
+
+  // List submits
+  function initListSubmits(selector, outerSelector) {
+    const $list = $(`.ui.${outerSelector}.list`);
+    const $noSelect = $list.find('.no-select');
+    const $listMenu = $(`.${selector} .menu`);
+    let hasUpdateAction = $listMenu.data('action') === 'update';
+    const items = {};
+
+    $(`.${selector}`).dropdown({
+      'action': 'nothing', // do not hide the menu if user presses Enter
+      fullTextSearch: 'exact',
+      async onHide() {
+        hasUpdateAction = $listMenu.data('action') === 'update'; // Update the var
+        if (hasUpdateAction) {
+          // TODO: Add batch functionality and make this 1 network request.
+          const itemEntries = Object.entries(items);
+          for (const [elementId, item] of itemEntries) {
+            await updateIssuesMeta(
+              item['update-url'],
+              item.action,
+              item['issue-id'],
+              elementId,
+            );
+          }
+          if (itemEntries.length) {
+            reloadConfirmDraftComment();
+          }
+        }
+      },
+    });
+
+    $listMenu.find('.item:not(.no-select)').on('click', function (e) {
+      e.preventDefault();
+      if ($(this).hasClass('ban-change')) {
+        return false;
+      }
+
+      hasUpdateAction = $listMenu.data('action') === 'update'; // Update the var
+
+      const clickedItem = this; // eslint-disable-line unicorn/no-this-assignment
+      const scope = this.getAttribute('data-scope');
+
+      $(this).parent().find('.item').each(function () {
+        if (scope) {
+          // Enable only clicked item for scoped labels
+          if (this.getAttribute('data-scope') !== scope) {
+            return true;
+          }
+          if (this !== clickedItem && !$(this).hasClass('checked')) {
+            return true;
+          }
+        } else if (this !== clickedItem) {
+          // Toggle for other labels
+          return true;
+        }
+
+        if ($(this).hasClass('checked')) {
+          $(this).removeClass('checked');
+          $(this).find('.octicon-check').addClass('tw-invisible');
+          if (hasUpdateAction) {
+            if (!($(this).data('id') in items)) {
+              items[$(this).data('id')] = {
+                'update-url': $listMenu.data('update-url'),
+                action: 'detach',
+                'issue-id': $listMenu.data('issue-id'),
+              };
+            } else {
+              delete items[$(this).data('id')];
+            }
+          }
+        } else {
+          $(this).addClass('checked');
+          $(this).find('.octicon-check').removeClass('tw-invisible');
+          if (hasUpdateAction) {
+            if (!($(this).data('id') in items)) {
+              items[$(this).data('id')] = {
+                'update-url': $listMenu.data('update-url'),
+                action: 'attach',
+                'issue-id': $listMenu.data('issue-id'),
+              };
+            } else {
+              delete items[$(this).data('id')];
+            }
+          }
+        }
+      });
+
+      // TODO: Which thing should be done for choosing review requests
+      // to make chosen items be shown on time here?
+      if (selector === 'select-reviewers-modify' || selector === 'select-assignees-modify') {
+        return false;
+      }
+
+      const listIds = [];
+      $(this).parent().find('.item').each(function () {
+        if ($(this).hasClass('checked')) {
+          listIds.push($(this).data('id'));
+          $($(this).data('id-selector')).removeClass('tw-hidden');
+        } else {
+          $($(this).data('id-selector')).addClass('tw-hidden');
+        }
+      });
+      if (!listIds.length) {
+        $noSelect.removeClass('tw-hidden');
+      } else {
+        $noSelect.addClass('tw-hidden');
+      }
+      $($(this).parent().data('id')).val(listIds.join(','));
+      return false;
+    });
+    $listMenu.find('.no-select.item').on('click', function (e) {
+      e.preventDefault();
+      if (hasUpdateAction) {
+        (async () => {
+          await updateIssuesMeta(
+            $listMenu.data('update-url'),
+            'clear',
+            $listMenu.data('issue-id'),
+            '',
+          );
+          reloadConfirmDraftComment();
+        })();
+      }
+
+      $(this).parent().find('.item').each(function () {
+        $(this).removeClass('checked');
+        $(this).find('.octicon-check').addClass('tw-invisible');
+      });
+
+      if (selector === 'select-reviewers-modify' || selector === 'select-assignees-modify') {
+        return false;
+      }
+
+      $list.find('.item').each(function () {
+        $(this).addClass('tw-hidden');
+      });
+      $noSelect.removeClass('tw-hidden');
+      $($(this).parent().data('id')).val('');
+    });
+  }
+
+  // Init labels and assignees
+  initListSubmits('select-label', 'labels');
+  initListSubmits('select-assignees', 'assignees');
+  initListSubmits('select-assignees-modify', 'assignees');
+  initListSubmits('select-reviewers-modify', 'assignees');
+
+  function selectItem(select_id, input_id) {
+    const $menu = $(`${select_id} .menu`);
+    const $list = $(`.ui${select_id}.list`);
+    const hasUpdateAction = $menu.data('action') === 'update';
+
+    $menu.find('.item:not(.no-select)').on('click', function () {
+      $(this).parent().find('.item').each(function () {
+        $(this).removeClass('selected active');
+      });
+
+      $(this).addClass('selected active');
+      if (hasUpdateAction) {
+        (async () => {
+          await updateIssuesMeta(
+            $menu.data('update-url'),
+            '',
+            $menu.data('issue-id'),
+            $(this).data('id'),
+          );
+          reloadConfirmDraftComment();
+        })();
+      }
+
+      let icon = '';
+      if (input_id === '#milestone_id') {
+        icon = svg('octicon-milestone', 18, 'tw-mr-2');
+      } else if (input_id === '#project_id') {
+        icon = svg('octicon-project', 18, 'tw-mr-2');
+      } else if (input_id === '#assignee_id') {
+        icon = `<img class="ui avatar image tw-mr-2" alt="avatar" src=${$(this).data('avatar')}>`;
+      }
+
+      $list.find('.selected').html(`
+        <a class="item muted sidebar-item-link" href=${$(this).data('href')}>
+          ${icon}
+          ${htmlEscape($(this).text())}
+        </a>
+      `);
+
+      $(`.ui${select_id}.list .no-select`).addClass('tw-hidden');
+      $(input_id).val($(this).data('id'));
+    });
+    $menu.find('.no-select.item').on('click', function () {
+      $(this).parent().find('.item:not(.no-select)').each(function () {
+        $(this).removeClass('selected active');
+      });
+
+      if (hasUpdateAction) {
+        (async () => {
+          await updateIssuesMeta(
+            $menu.data('update-url'),
+            '',
+            $menu.data('issue-id'),
+            $(this).data('id'),
+          );
+          reloadConfirmDraftComment();
+        })();
+      }
+
+      $list.find('.selected').html('');
+      $list.find('.no-select').removeClass('tw-hidden');
+      $(input_id).val('');
+    });
+  }
+
+  // Milestone, Assignee, Project
+  selectItem('.select-project', '#project_id');
+  selectItem('.select-milestone', '#milestone_id');
+  selectItem('.select-assignee', '#assignee_id');
+}
+
+async function onEditContent(event) {
+  event.preventDefault();
+
+  const segment = this.closest('.header').nextElementSibling;
+  const editContentZone = segment.querySelector('.edit-content-zone');
+  const renderContent = segment.querySelector('.render-content');
+  const rawContent = segment.querySelector('.raw-content');
+
+  let comboMarkdownEditor;
+
+  /**
+   * @param {HTMLElement} dropzone
+   */
+  const setupDropzone = async (dropzone) => {
+    if (!dropzone) return null;
+
+    let disableRemovedfileEvent = false; // when resetting the dropzone (removeAllFiles), disable the "removedfile" event
+    let fileUuidDict = {}; // to record: if a comment has been saved, then the uploaded files won't be deleted from server when clicking the Remove in the dropzone
+    const dz = await createDropzone(dropzone, {
+      url: dropzone.getAttribute('data-upload-url'),
+      headers: {'X-Csrf-Token': csrfToken},
+      maxFiles: dropzone.getAttribute('data-max-file'),
+      maxFilesize: dropzone.getAttribute('data-max-size'),
+      acceptedFiles: ['*/*', ''].includes(dropzone.getAttribute('data-accepts')) ? null : dropzone.getAttribute('data-accepts'),
+      addRemoveLinks: true,
+      dictDefaultMessage: dropzone.getAttribute('data-default-message'),
+      dictInvalidFileType: dropzone.getAttribute('data-invalid-input-type'),
+      dictFileTooBig: dropzone.getAttribute('data-file-too-big'),
+      dictRemoveFile: dropzone.getAttribute('data-remove-file'),
+      timeout: 0,
+      thumbnailMethod: 'contain',
+      thumbnailWidth: 480,
+      thumbnailHeight: 480,
+      init() {
+        this.on('success', (file, data) => {
+          file.uuid = data.uuid;
+          fileUuidDict[file.uuid] = {submitted: false};
+          const input = document.createElement('input');
+          input.id = data.uuid;
+          input.name = 'files';
+          input.type = 'hidden';
+          input.value = data.uuid;
+          dropzone.querySelector('.files').append(input);
+        });
+        this.on('removedfile', async (file) => {
+          document.getElementById(file.uuid)?.remove();
+          if (disableRemovedfileEvent) return;
+          if (dropzone.getAttribute('data-remove-url') && !fileUuidDict[file.uuid].submitted) {
+            try {
+              await POST(dropzone.getAttribute('data-remove-url'), {data: new URLSearchParams({file: file.uuid})});
+            } catch (error) {
+              console.error(error);
+            }
+          }
+        });
+        this.on('submit', () => {
+          for (const fileUuid of Object.keys(fileUuidDict)) {
+            fileUuidDict[fileUuid].submitted = true;
+          }
+        });
+        this.on('reload', async () => {
+          try {
+            const response = await GET(editContentZone.getAttribute('data-attachment-url'));
+            const data = await response.json();
+            // do not trigger the "removedfile" event, otherwise the attachments would be deleted from server
+            disableRemovedfileEvent = true;
+            dz.removeAllFiles(true);
+            dropzone.querySelector('.files').innerHTML = '';
+            for (const el of dropzone.querySelectorAll('.dz-preview')) el.remove();
+            fileUuidDict = {};
+            disableRemovedfileEvent = false;
+
+            for (const attachment of data) {
+              const imgSrc = `${dropzone.getAttribute('data-link-url')}/${attachment.uuid}`;
+              dz.emit('addedfile', attachment);
+              dz.emit('thumbnail', attachment, imgSrc);
+              dz.emit('complete', attachment);
+              fileUuidDict[attachment.uuid] = {submitted: true};
+              dropzone.querySelector(`img[src='${imgSrc}']`).style.maxWidth = '100%';
+              const input = document.createElement('input');
+              input.id = attachment.uuid;
+              input.name = 'files';
+              input.type = 'hidden';
+              input.value = attachment.uuid;
+              dropzone.querySelector('.files').append(input);
+            }
+            if (!dropzone.querySelector('.dz-preview')) {
+              dropzone.classList.remove('dz-started');
+            }
+          } catch (error) {
+            console.error(error);
+          }
+        });
+      },
+    });
+    dz.emit('reload');
+    return dz;
+  };
+
+  const cancelAndReset = (e) => {
+    e.preventDefault();
+    showElem(renderContent);
+    hideElem(editContentZone);
+    comboMarkdownEditor.attachedDropzoneInst?.emit('reload');
+  };
+
+  const saveAndRefresh = async (e) => {
+    e.preventDefault();
+    showElem(renderContent);
+    hideElem(editContentZone);
+    const dropzoneInst = comboMarkdownEditor.attachedDropzoneInst;
+    try {
+      const params = new URLSearchParams({
+        content: comboMarkdownEditor.value(),
+        context: editContentZone.getAttribute('data-context'),
+        content_version: editContentZone.getAttribute('data-content-version'),
+      });
+      for (const fileInput of dropzoneInst?.element.querySelectorAll('.files [name=files]')) params.append('files[]', fileInput.value);
+
+      const response = await POST(editContentZone.getAttribute('data-update-url'), {data: params});
+      const data = await response.json();
+      if (response.status === 400) {
+        showErrorToast(data.errorMessage);
+        return;
+      }
+      editContentZone.setAttribute('data-content-version', data.contentVersion);
+      if (!data.content) {
+        renderContent.innerHTML = document.getElementById('no-content').innerHTML;
+        rawContent.textContent = '';
+      } else {
+        renderContent.innerHTML = data.content;
+        rawContent.textContent = comboMarkdownEditor.value();
+        const refIssues = renderContent.querySelectorAll('p .ref-issue');
+        attachRefIssueContextPopup(refIssues);
+      }
+      const content = segment;
+      if (!content.querySelector('.dropzone-attachments')) {
+        if (data.attachments !== '') {
+          content.insertAdjacentHTML('beforeend', data.attachments);
+        }
+      } else if (data.attachments === '') {
+        content.querySelector('.dropzone-attachments').remove();
+      } else {
+        content.querySelector('.dropzone-attachments').outerHTML = data.attachments;
+      }
+      dropzoneInst?.emit('submit');
+      dropzoneInst?.emit('reload');
+      initMarkupContent();
+      initCommentContent();
+    } catch (error) {
+      console.error(error);
+    }
+  };
+
+  comboMarkdownEditor = getComboMarkdownEditor(editContentZone.querySelector('.combo-markdown-editor'));
+  if (!comboMarkdownEditor) {
+    editContentZone.innerHTML = document.getElementById('issue-comment-editor-template').innerHTML;
+    comboMarkdownEditor = await initComboMarkdownEditor(editContentZone.querySelector('.combo-markdown-editor'));
+    comboMarkdownEditor.attachedDropzoneInst = await setupDropzone(editContentZone.querySelector('.dropzone'));
+    editContentZone.addEventListener('ce-quick-submit', saveAndRefresh);
+    editContentZone.querySelector('.cancel.button').addEventListener('click', cancelAndReset);
+    editContentZone.querySelector('.save.button').addEventListener('click', saveAndRefresh);
+  } else {
+    const tabEditor = editContentZone.querySelector('.combo-markdown-editor').querySelector('.tabular.menu > a[data-tab-for=markdown-writer]');
+    tabEditor?.click();
+  }
+
+  // Show write/preview tab and copy raw content as needed
+  showElem(editContentZone);
+  hideElem(renderContent);
+  if (!comboMarkdownEditor.value()) {
+    comboMarkdownEditor.value(rawContent.textContent);
+  }
+  comboMarkdownEditor.focus();
+}
+
+export function initRepository() {
+  if (!$('.page-content.repository').length) return;
+
+  initRepoBranchTagSelector('.js-branch-tag-selector');
+
+  // Options
+  if ($('.repository.settings.options').length > 0) {
+    // Enable or select internal/external wiki system and issue tracker.
+    $('.enable-system').on('change', function () {
+      if (this.checked) {
+        $($(this).data('target')).removeClass('disabled');
+        if (!$(this).data('context')) $($(this).data('context')).addClass('disabled');
+      } else {
+        $($(this).data('target')).addClass('disabled');
+        if (!$(this).data('context')) $($(this).data('context')).removeClass('disabled');
+      }
+    });
+    $('.enable-system-radio').on('change', function () {
+      if (this.value === 'false') {
+        $($(this).data('target')).addClass('disabled');
+        if ($(this).data('context') !== undefined) $($(this).data('context')).removeClass('disabled');
+      } else if (this.value === 'true') {
+        $($(this).data('target')).removeClass('disabled');
+        if ($(this).data('context') !== undefined) $($(this).data('context')).addClass('disabled');
+      }
+    });
+    const $trackerIssueStyleRadios = $('.js-tracker-issue-style');
+    $trackerIssueStyleRadios.on('change input', () => {
+      const checkedVal = $trackerIssueStyleRadios.filter(':checked').val();
+      $('#tracker-issue-style-regex-box').toggleClass('disabled', checkedVal !== 'regexp');
+    });
+  }
+
+  // Labels
+  initCompLabelEdit('.repository.labels');
+
+  // Milestones
+  if ($('.repository.new.milestone').length > 0) {
+    $('#clear-date').on('click', () => {
+      $('#deadline').val('');
+      return false;
+    });
+  }
+
+  // Repo Creation
+  if ($('.repository.new.repo').length > 0) {
+    $('input[name="gitignores"], input[name="license"]').on('change', () => {
+      const gitignores = $('input[name="gitignores"]').val();
+      const license = $('input[name="license"]').val();
+      if (gitignores || license) {
+        document.querySelector('input[name="auto_init"]').checked = true;
+      }
+    });
+  }
+
+  // Compare or pull request
+  const $repoDiff = $('.repository.diff');
+  if ($repoDiff.length) {
+    initRepoCommonBranchOrTagDropdown('.choose.branch .dropdown');
+    initRepoCommonFilterSearchDropdown('.choose.branch .dropdown');
+  }
+
+  initRepoCloneLink();
+  initCitationFileCopyContent();
+  initRepoSettingBranches();
+
+  // Issues
+  if ($('.repository.view.issue').length > 0) {
+    initRepoIssueCommentEdit();
+
+    initRepoIssueBranchSelect();
+    initRepoIssueTitleEdit();
+    initRepoIssueWipToggle();
+    initRepoIssueComments();
+
+    initRepoDiffConversationNav();
+    initRepoIssueReferenceIssue();
+
+    initRepoIssueCommentDelete();
+    initRepoIssueDependencyDelete();
+    initRepoIssueCodeCommentCancel();
+    initRepoPullRequestUpdate();
+    initCompReactionSelector($(document));
+
+    initRepoPullRequestMergeForm();
+    initRepoPullRequestCommitStatus();
+  }
+
+  // Pull request
+  const $repoComparePull = $('.repository.compare.pull');
+  if ($repoComparePull.length > 0) {
+    // show pull request form
+    $repoComparePull.find('button.show-form').on('click', function (e) {
+      e.preventDefault();
+      hideElem($(this).parent());
+
+      const $form = $repoComparePull.find('.pullrequest-form');
+      showElem($form);
+    });
+  }
+
+  initUnicodeEscapeButton();
+}
+
+function initRepoIssueCommentEdit() {
+  // Edit issue or comment content
+  $(document).on('click', '.edit-content', onEditContent);
+
+  // Quote reply
+  $(document).on('click', '.quote-reply', async function (event) {
+    event.preventDefault();
+    const target = $(this).data('target');
+    const quote = $(`#${target}`).text().replace(/\n/g, '\n> ');
+    const content = `> ${quote}\n\n`;
+    let editor;
+    if ($(this).hasClass('quote-reply-diff')) {
+      const $replyBtn = $(this).closest('.comment-code-cloud').find('button.comment-form-reply');
+      editor = await handleReply($replyBtn);
+    } else {
+      // for normal issue/comment page
+      editor = getComboMarkdownEditor($('#comment-form .combo-markdown-editor'));
+    }
+    if (editor) {
+      if (editor.value()) {
+        editor.value(`${editor.value()}\n\n${content}`);
+      } else {
+        editor.value(content);
+      }
+      editor.focus();
+      editor.moveCursorToEnd();
+    }
+  });
+}
diff --git a/web_src/js/features/repo-migrate.js b/web_src/js/features/repo-migrate.js
new file mode 100644
index 00000000..490e7df0
--- /dev/null
+++ b/web_src/js/features/repo-migrate.js
@@ -0,0 +1,63 @@
+import {hideElem, showElem} from '../utils/dom.js';
+import {GET, POST} from '../modules/fetch.js';
+
+const {appSubUrl} = window.config;
+
+export function initRepoMigrationStatusChecker() {
+  const repoMigrating = document.getElementById('repo_migrating');
+  if (!repoMigrating) return;
+
+  document.getElementById('repo_migrating_retry').addEventListener('click', doMigrationRetry);
+
+  const task = repoMigrating.getAttribute('data-migrating-task-id');
+
+  // returns true if the refresh still needs to be called after a while
+  const refresh = async () => {
+    const res = await GET(`${appSubUrl}/user/task/${task}`);
+    if (res.status !== 200) return true; // continue to refresh if network error occurs
+
+    const data = await res.json();
+
+    // for all status
+    if (data.message) {
+      document.getElementById('repo_migrating_progress_message').textContent = data.message;
+    }
+
+    // TaskStatusFinished
+    if (data.status === 4) {
+      window.location.reload();
+      return false;
+    }
+
+    // TaskStatusFailed
+    if (data.status === 3) {
+      hideElem('#repo_migrating_progress');
+      hideElem('#repo_migrating');
+      showElem('#repo_migrating_retry');
+      showElem('#repo_migrating_failed');
+      showElem('#repo_migrating_failed_image');
+      document.getElementById('repo_migrating_failed_error').textContent = data.message;
+      return false;
+    }
+
+    return true; // continue to refresh
+  };
+
+  const syncTaskStatus = async () => {
+    let doNextRefresh = true;
+    try {
+      doNextRefresh = await refresh();
+    } finally {
+      if (doNextRefresh) {
+        setTimeout(syncTaskStatus, 2000);
+      }
+    }
+  };
+
+  syncTaskStatus(); // no await
+}
+
+async function doMigrationRetry(e) {
+  await POST(e.target.getAttribute('data-migrating-task-retry-url'));
+  window.location.reload();
+}
diff --git a/web_src/js/features/repo-migration.js b/web_src/js/features/repo-migration.js
new file mode 100644
index 00000000..59e282e4
--- /dev/null
+++ b/web_src/js/features/repo-migration.js
@@ -0,0 +1,69 @@
+import {hideElem, showElem, toggleElem} from '../utils/dom.js';
+
+const service = document.getElementById('service_type');
+const user = document.getElementById('auth_username');
+const pass = document.getElementById('auth_password');
+const token = document.getElementById('auth_token');
+const mirror = document.getElementById('mirror');
+const lfs = document.getElementById('lfs');
+const lfsSettings = document.getElementById('lfs_settings');
+const lfsEndpoint = document.getElementById('lfs_endpoint');
+const items = document.querySelectorAll('#migrate_items input[type=checkbox]');
+
+export function initRepoMigration() {
+  checkAuth();
+  setLFSSettingsVisibility();
+
+  user?.addEventListener('input', () => {checkItems(false)});
+  pass?.addEventListener('input', () => {checkItems(false)});
+  token?.addEventListener('input', () => {checkItems(true)});
+  mirror?.addEventListener('change', () => {checkItems(true)});
+  document.getElementById('lfs_settings_show')?.addEventListener('click', (e) => {
+    e.preventDefault();
+    e.stopPropagation();
+    showElem(lfsEndpoint);
+  });
+  lfs?.addEventListener('change', setLFSSettingsVisibility);
+
+  const cloneAddr = document.getElementById('clone_addr');
+  cloneAddr?.addEventListener('change', () => {
+    const repoName = document.getElementById('repo_name');
+    if (cloneAddr.value && !repoName?.value) { // Only modify if repo_name input is blank
+      repoName.value = cloneAddr.value.match(/^(.*\/)?((.+?)(\.git)?)$/)[3];
+    }
+  });
+}
+
+function checkAuth() {
+  if (!service) return;
+  const serviceType = Number(service.value);
+
+  checkItems(serviceType !== 1);
+}
+
+function checkItems(tokenAuth) {
+  let enableItems;
+  if (tokenAuth) {
+    enableItems = token?.value !== '';
+  } else {
+    enableItems = user?.value !== '' || pass?.value !== '';
+  }
+  if (enableItems && Number(service?.value) > 1) {
+    if (mirror?.checked) {
+      for (const item of items) {
+        item.disabled = item.name !== 'wiki';
+      }
+      return;
+    }
+    for (const item of items) item.disabled = false;
+  } else {
+    for (const item of items) item.disabled = true;
+  }
+}
+
+function setLFSSettingsVisibility() {
+  if (!lfs) return;
+  const visible = lfs.checked;
+  toggleElem(lfsSettings, visible);
+  hideElem(lfsEndpoint);
+}
diff --git a/web_src/js/features/repo-projects.js b/web_src/js/features/repo-projects.js
new file mode 100644
index 00000000..a1cc4b34
--- /dev/null
+++ b/web_src/js/features/repo-projects.js
@@ -0,0 +1,188 @@
+import $ from 'jquery';
+import {contrastColor} from '../utils/color.js';
+import {createSortable} from '../modules/sortable.js';
+import {POST, DELETE, PUT} from '../modules/fetch.js';
+
+function updateIssueCount(cards) {
+  const parent = cards.parentElement;
+  const cnt = parent.getElementsByClassName('issue-card').length;
+  parent.getElementsByClassName('project-column-issue-count')[0].textContent = cnt;
+}
+
+async function createNewColumn(url, columnTitle, projectColorInput) {
+  try {
+    await POST(url, {
+      data: {
+        title: columnTitle.val(),
+        color: projectColorInput.val(),
+      },
+    });
+  } catch (error) {
+    console.error(error);
+  } finally {
+    columnTitle.closest('form').removeClass('dirty');
+    window.location.reload();
+  }
+}
+
+async function moveIssue({item, from, to, oldIndex}) {
+  const columnCards = to.getElementsByClassName('issue-card');
+  updateIssueCount(from);
+  updateIssueCount(to);
+
+  const columnSorting = {
+    issues: Array.from(columnCards, (card, i) => ({
+      issueID: parseInt(card.getAttribute('data-issue')),
+      sorting: i,
+    })),
+  };
+
+  try {
+    await POST(`${to.getAttribute('data-url')}/move`, {
+      data: columnSorting,
+    });
+  } catch (error) {
+    console.error(error);
+    from.insertBefore(item, from.children[oldIndex]);
+  }
+}
+
+async function initRepoProjectSortable() {
+  const els = document.querySelectorAll('#project-board > .board.sortable');
+  if (!els.length) return;
+
+  // the HTML layout is: #project-board > .board > .project-column .cards > .issue-card
+  const mainBoard = els[0];
+  let boardColumns = mainBoard.getElementsByClassName('project-column');
+  createSortable(mainBoard, {
+    group: 'project-column',
+    draggable: '.project-column',
+    handle: '.project-column-header',
+    delayOnTouchOnly: true,
+    delay: 500,
+    onSort: async () => {
+      boardColumns = mainBoard.getElementsByClassName('project-column');
+
+      const columnSorting = {
+        columns: Array.from(boardColumns, (column, i) => ({
+          columnID: parseInt(column.getAttribute('data-id')),
+          sorting: i,
+        })),
+      };
+
+      try {
+        await POST(mainBoard.getAttribute('data-url'), {
+          data: columnSorting,
+        });
+      } catch (error) {
+        console.error(error);
+      }
+    },
+  });
+
+  for (const boardColumn of boardColumns) {
+    const boardCardList = boardColumn.getElementsByClassName('cards')[0];
+    createSortable(boardCardList, {
+      group: 'shared',
+      onAdd: moveIssue,
+      onUpdate: moveIssue,
+      delayOnTouchOnly: true,
+      delay: 500,
+    });
+  }
+}
+
+export function initRepoProject() {
+  if (!document.querySelector('.repository.projects')) {
+    return;
+  }
+
+  const _promise = initRepoProjectSortable();
+
+  for (const modal of document.getElementsByClassName('edit-project-column-modal')) {
+    const projectHeader = modal.closest('.project-column-header');
+    const projectTitleLabel = projectHeader?.querySelector('.project-column-title-label');
+    const projectTitleInput = modal.querySelector('.project-column-title-input');
+    const projectColorInput = modal.querySelector('#new_project_column_color');
+    const boardColumn = modal.closest('.project-column');
+    modal.querySelector('.edit-project-column-button')?.addEventListener('click', async function (e) {
+      e.preventDefault();
+      try {
+        await PUT(this.getAttribute('data-url'), {
+          data: {
+            title: projectTitleInput?.value,
+            color: projectColorInput?.value,
+          },
+        });
+      } catch (error) {
+        console.error(error);
+      } finally {
+        projectTitleLabel.textContent = projectTitleInput?.value;
+        projectTitleInput.closest('form')?.classList.remove('dirty');
+        const dividers = boardColumn.querySelectorAll(':scope > .divider');
+        if (projectColorInput.value) {
+          const color = contrastColor(projectColorInput.value);
+          boardColumn.style.setProperty('background', projectColorInput.value, 'important');
+          boardColumn.style.setProperty('color', color, 'important');
+          for (const divider of dividers) {
+            divider.style.setProperty('color', color);
+          }
+        } else {
+          boardColumn.style.removeProperty('background');
+          boardColumn.style.removeProperty('color');
+          for (const divider of dividers) {
+            divider.style.removeProperty('color');
+          }
+        }
+        $('.ui.modal').modal('hide');
+      }
+    });
+  }
+
+  $('.default-project-column-modal').each(function () {
+    const $boardColumn = $(this).closest('.project-column');
+    const $showButton = $($boardColumn).find('.default-project-column-show');
+    const $commitButton = $(this).find('.actions > .ok.button');
+
+    $($commitButton).on('click', async (e) => {
+      e.preventDefault();
+
+      try {
+        await POST($($showButton).data('url'));
+      } catch (error) {
+        console.error(error);
+      } finally {
+        window.location.reload();
+      }
+    });
+  });
+
+  $('.show-delete-project-column-modal').each(function () {
+    const $deleteColumnModal = $(`${this.getAttribute('data-modal')}`);
+    const $deleteColumnButton = $deleteColumnModal.find('.actions > .ok.button');
+    const deleteUrl = this.getAttribute('data-url');
+
+    $deleteColumnButton.on('click', async (e) => {
+      e.preventDefault();
+
+      try {
+        await DELETE(deleteUrl);
+      } catch (error) {
+        console.error(error);
+      } finally {
+        window.location.reload();
+      }
+    });
+  });
+
+  $('#new_project_column_submit').on('click', (e) => {
+    e.preventDefault();
+    const $columnTitle = $('#new_project_column');
+    const $projectColorInput = $('#new_project_column_color_picker');
+    if (!$columnTitle.val()) {
+      return;
+    }
+    const url = e.target.getAttribute('data-url');
+    createNewColumn(url, $columnTitle, $projectColorInput);
+  });
+}
diff --git a/web_src/js/features/repo-release.js b/web_src/js/features/repo-release.js
new file mode 100644
index 00000000..3784bed2
--- /dev/null
+++ b/web_src/js/features/repo-release.js
@@ -0,0 +1,53 @@
+import {hideElem, showElem} from '../utils/dom.js';
+import {initComboMarkdownEditor} from './comp/ComboMarkdownEditor.js';
+
+export function initRepoRelease() {
+  for (const el of document.querySelectorAll('.remove-rel-attach')) {
+    el.addEventListener('click', (e) => {
+      const uuid = e.target.getAttribute('data-uuid');
+      const id = e.target.getAttribute('data-id');
+      document.querySelector(`input[name='attachment-del-${uuid}']`).value = 'true';
+      hideElem(`#attachment-${id}`);
+    });
+  }
+}
+
+export function initRepoReleaseNew() {
+  if (!document.querySelector('.repository.new.release')) return;
+
+  initTagNameEditor();
+  initRepoReleaseEditor();
+}
+
+function initTagNameEditor() {
+  const el = document.getElementById('tag-name-editor');
+  if (!el) return;
+
+  const existingTags = JSON.parse(el.getAttribute('data-existing-tags'));
+  if (!Array.isArray(existingTags)) return;
+
+  const defaultTagHelperText = el.getAttribute('data-tag-helper');
+  const newTagHelperText = el.getAttribute('data-tag-helper-new');
+  const existingTagHelperText = el.getAttribute('data-tag-helper-existing');
+
+  document.getElementById('tag-name').addEventListener('keyup', (e) => {
+    const value = e.target.value;
+    const tagHelper = document.getElementById('tag-helper');
+    if (existingTags.includes(value)) {
+      // If the tag already exists, hide the target branch selector.
+      hideElem('#tag-target-selector');
+      tagHelper.textContent = existingTagHelperText;
+    } else {
+      showElem('#tag-target-selector');
+      tagHelper.textContent = value ? newTagHelperText : defaultTagHelperText;
+    }
+  });
+}
+
+function initRepoReleaseEditor() {
+  const editor = document.querySelector('.repository.new.release .combo-markdown-editor');
+  if (!editor) {
+    return;
+  }
+  initComboMarkdownEditor(editor);
+}
diff --git a/web_src/js/features/repo-search.js b/web_src/js/features/repo-search.js
new file mode 100644
index 00000000..185f6119
--- /dev/null
+++ b/web_src/js/features/repo-search.js
@@ -0,0 +1,22 @@
+export function initRepositorySearch() {
+  const repositorySearchForm = document.querySelector('#repo-search-form');
+  if (!repositorySearchForm) return;
+
+  repositorySearchForm.addEventListener('change', (e) => {
+    e.preventDefault();
+
+    const formData = new FormData(repositorySearchForm);
+    const params = new URLSearchParams(formData);
+
+    if (e.target.name === 'clear-filter') {
+      params.delete('archived');
+      params.delete('fork');
+      params.delete('mirror');
+      params.delete('template');
+      params.delete('private');
+    }
+
+    params.delete('clear-filter');
+    window.location.search = params.toString();
+  });
+}
diff --git a/web_src/js/features/repo-settings.js b/web_src/js/features/repo-settings.js
new file mode 100644
index 00000000..52c5de2b
--- /dev/null
+++ b/web_src/js/features/repo-settings.js
@@ -0,0 +1,120 @@
+import $ from 'jquery';
+import {minimatch} from 'minimatch';
+import {createMonaco} from './codeeditor.js';
+import {onInputDebounce, toggleElem} from '../utils/dom.js';
+import {POST} from '../modules/fetch.js';
+
+const {appSubUrl, csrfToken} = window.config;
+
+export function initRepoSettingsCollaboration() {
+  // Change collaborator access mode
+  $('.page-content.repository .ui.dropdown.access-mode').each((_, el) => {
+    const $dropdown = $(el);
+    const $text = $dropdown.find('> .text');
+    $dropdown.dropdown({
+      async action(_text, value) {
+        const lastValue = el.getAttribute('data-last-value');
+        try {
+          el.setAttribute('data-last-value', value);
+          $dropdown.dropdown('hide');
+          const data = new FormData();
+          data.append('uid', el.getAttribute('data-uid'));
+          data.append('mode', value);
+          await POST(el.getAttribute('data-url'), {data});
+        } catch {
+          $text.text('(error)'); // prevent from misleading users when error occurs
+          el.setAttribute('data-last-value', lastValue);
+        }
+      },
+      onChange(_value, text, _$choice) {
+        $text.text(text); // update the text when using keyboard navigating
+      },
+      onHide() {
+        // set to the really selected value, defer to next tick to make sure `action` has finished its work because the calling order might be onHide -> action
+        setTimeout(() => {
+          const $item = $dropdown.dropdown('get item', el.getAttribute('data-last-value'));
+          if ($item) {
+            $dropdown.dropdown('set selected', el.getAttribute('data-last-value'));
+          } else {
+            $text.text('(none)'); // prevent from misleading users when the access mode is undefined
+          }
+        }, 0);
+      },
+    });
+  });
+}
+
+export function initRepoSettingSearchTeamBox() {
+  const searchTeamBox = document.getElementById('search-team-box');
+  if (!searchTeamBox) return;
+
+  $(searchTeamBox).search({
+    minCharacters: 2,
+    apiSettings: {
+      url: `${appSubUrl}/org/${searchTeamBox.getAttribute('data-org-name')}/teams/-/search?q={query}`,
+      headers: {'X-Csrf-Token': csrfToken},
+      onResponse(response) {
+        const items = [];
+        $.each(response.data, (_i, item) => {
+          items.push({
+            title: item.name,
+            description: `${item.permission} access`, // TODO: translate this string
+          });
+        });
+
+        return {results: items};
+      },
+    },
+    searchFields: ['name', 'description'],
+    showNoResults: false,
+  });
+}
+
+export function initRepoSettingGitHook() {
+  if (!$('.edit.githook').length) return;
+  const filename = document.querySelector('.hook-filename').textContent;
+  const _promise = createMonaco($('#content')[0], filename, {language: 'shell'});
+}
+
+export function initRepoSettingBranches() {
+  if (!document.querySelector('.repository.settings.branches')) return;
+
+  for (const el of document.getElementsByClassName('toggle-target-enabled')) {
+    el.addEventListener('change', function () {
+      const target = document.querySelector(this.getAttribute('data-target'));
+      target?.classList.toggle('disabled', !this.checked);
+    });
+  }
+
+  for (const el of document.getElementsByClassName('toggle-target-disabled')) {
+    el.addEventListener('change', function () {
+      const target = document.querySelector(this.getAttribute('data-target'));
+      if (this.checked) target?.classList.add('disabled'); // only disable, do not auto enable
+    });
+  }
+
+  document.getElementById('dismiss_stale_approvals')?.addEventListener('change', function () {
+    document.getElementById('ignore_stale_approvals_box')?.classList.toggle('disabled', this.checked);
+  });
+
+  // show the `Matched` mark for the status checks that match the pattern
+  const markMatchedStatusChecks = () => {
+    const patterns = (document.getElementById('status_check_contexts').value || '').split(/[\r\n]+/);
+    const validPatterns = patterns.map((item) => item.trim()).filter(Boolean);
+    const marks = document.getElementsByClassName('status-check-matched-mark');
+
+    for (const el of marks) {
+      let matched = false;
+      const statusCheck = el.getAttribute('data-status-check');
+      for (const pattern of validPatterns) {
+        if (minimatch(statusCheck, pattern)) {
+          matched = true;
+          break;
+        }
+      }
+      toggleElem(el, matched);
+    }
+  };
+  markMatchedStatusChecks();
+  document.getElementById('status_check_contexts').addEventListener('input', onInputDebounce(markMatchedStatusChecks));
+}
diff --git a/web_src/js/features/repo-template.js b/web_src/js/features/repo-template.js
new file mode 100644
index 00000000..5f63e8b3
--- /dev/null
+++ b/web_src/js/features/repo-template.js
@@ -0,0 +1,51 @@
+import $ from 'jquery';
+import {htmlEscape} from 'escape-goat';
+import {hideElem, showElem} from '../utils/dom.js';
+
+const {appSubUrl} = window.config;
+
+export function initRepoTemplateSearch() {
+  const $repoTemplate = $('#repo_template');
+  const checkTemplate = function () {
+    const $templateUnits = $('#template_units');
+    const $nonTemplate = $('#non_template');
+    if ($repoTemplate.val() !== '' && $repoTemplate.val() !== '0') {
+      showElem($templateUnits);
+      hideElem($nonTemplate);
+    } else {
+      hideElem($templateUnits);
+      showElem($nonTemplate);
+    }
+  };
+  $repoTemplate.on('change', checkTemplate);
+  checkTemplate();
+
+  const changeOwner = function () {
+    $('#repo_template_search')
+      .dropdown({
+        apiSettings: {
+          url: `${appSubUrl}/repo/search?q={query}&template=true&priority_owner_id=${$('#uid').val()}`,
+          onResponse(response) {
+            const filteredResponse = {success: true, results: []};
+            filteredResponse.results.push({
+              name: '',
+              value: '',
+            });
+            // Parse the response from the api to work with our dropdown
+            $.each(response.data, (_r, repo) => {
+              filteredResponse.results.push({
+                name: htmlEscape(repo.repository.full_name),
+                value: repo.repository.id,
+              });
+            });
+            return filteredResponse;
+          },
+          cache: false,
+        },
+
+        fullTextSearch: true,
+      });
+  };
+  $('#uid').on('change', changeOwner);
+  changeOwner();
+}
diff --git a/web_src/js/features/repo-unicode-escape.js b/web_src/js/features/repo-unicode-escape.js
new file mode 100644
index 00000000..9f0c7452
--- /dev/null
+++ b/web_src/js/features/repo-unicode-escape.js
@@ -0,0 +1,27 @@
+import {hideElem, queryElemSiblings, showElem, toggleElem} from '../utils/dom.js';
+
+export function initUnicodeEscapeButton() {
+  document.addEventListener('click', (e) => {
+    const btn = e.target.closest('.escape-button, .unescape-button, .toggle-escape-button');
+    if (!btn) return;
+
+    e.preventDefault();
+
+    const fileContent = btn.closest('.file-content, .non-diff-file-content, .file-preview-box');
+    const fileView = fileContent?.querySelectorAll('.file-code, .file-view, .file-preview');
+    if (btn.matches('.escape-button')) {
+      for (const el of fileView) el.classList.add('unicode-escaped');
+      hideElem(btn);
+      showElem(queryElemSiblings(btn, '.unescape-button'));
+    } else if (btn.matches('.unescape-button')) {
+      for (const el of fileView) el.classList.remove('unicode-escaped');
+      hideElem(btn);
+      showElem(queryElemSiblings(btn, '.escape-button'));
+    } else if (btn.matches('.toggle-escape-button')) {
+      const isEscaped = fileView[0]?.classList.contains('unicode-escaped');
+      for (const el of fileView) el.classList.toggle('unicode-escaped', !isEscaped);
+      toggleElem(fileContent.querySelectorAll('.unescape-button'), !isEscaped);
+      toggleElem(fileContent.querySelectorAll('.escape-button'), isEscaped);
+    }
+  });
+}
diff --git a/web_src/js/features/repo-wiki.js b/web_src/js/features/repo-wiki.js
new file mode 100644
index 00000000..03a2c68c
--- /dev/null
+++ b/web_src/js/features/repo-wiki.js
@@ -0,0 +1,89 @@
+import {initMarkupContent} from '../markup/content.js';
+import {validateTextareaNonEmpty, initComboMarkdownEditor} from './comp/ComboMarkdownEditor.js';
+import {fomanticMobileScreen} from '../modules/fomantic.js';
+import {POST} from '../modules/fetch.js';
+
+async function initRepoWikiFormEditor() {
+  const editArea = document.querySelector('.repository.wiki .combo-markdown-editor textarea');
+  if (!editArea) return;
+
+  const form = document.querySelector('.repository.wiki.new .ui.form');
+  const editorContainer = form.querySelector('.combo-markdown-editor');
+  let editor;
+
+  let renderRequesting = false;
+  let lastContent;
+  const renderEasyMDEPreview = async function () {
+    if (renderRequesting) return;
+
+    const previewFull = editorContainer.querySelector('.EasyMDEContainer .editor-preview-active');
+    const previewSide = editorContainer.querySelector('.EasyMDEContainer .editor-preview-active-side');
+    const previewTarget = previewSide || previewFull;
+    const newContent = editArea.value;
+    if (editor && previewTarget && lastContent !== newContent) {
+      renderRequesting = true;
+      const formData = new FormData();
+      formData.append('mode', editor.previewMode);
+      formData.append('context', editor.previewContext);
+      formData.append('text', newContent);
+      formData.append('wiki', editor.previewWiki);
+      try {
+        const response = await POST(editor.previewUrl, {data: formData});
+        const data = await response.text();
+        lastContent = newContent;
+        previewTarget.innerHTML = `<div class="markup ui segment">${data}</div>`;
+        initMarkupContent();
+      } catch (error) {
+        console.error('Error rendering preview:', error);
+      } finally {
+        renderRequesting = false;
+        setTimeout(renderEasyMDEPreview, 1000);
+      }
+    } else {
+      setTimeout(renderEasyMDEPreview, 1000);
+    }
+  };
+  renderEasyMDEPreview();
+
+  editor = await initComboMarkdownEditor(editorContainer, {
+    useScene: 'wiki',
+    // EasyMDE has some problems of height definition, it has inline style height 300px by default, so we also use inline styles to override it.
+    // And another benefit is that we only need to write the style once for both editors.
+    // TODO: Move height style to CSS after EasyMDE removal.
+    editorHeights: {minHeight: '300px', height: 'calc(100vh - 600px)'},
+    previewMode: 'gfm',
+    previewWiki: true,
+    easyMDEOptions: {
+      previewRender: (_content, previewTarget) => previewTarget.innerHTML, // disable builtin preview render
+      toolbar: ['bold', 'italic', 'strikethrough', '|',
+        'heading-1', 'heading-2', 'heading-3', 'heading-bigger', 'heading-smaller', '|',
+        'gitea-code-inline', 'code', 'quote', '|', 'gitea-checkbox-empty', 'gitea-checkbox-checked', '|',
+        'unordered-list', 'ordered-list', '|',
+        'link', 'image', 'table', 'horizontal-rule', '|',
+        'preview', 'fullscreen', 'side-by-side', '|', 'gitea-switch-to-textarea',
+      ],
+    },
+  });
+
+  form.addEventListener('submit', (e) => {
+    if (!validateTextareaNonEmpty(editArea)) {
+      e.preventDefault();
+      e.stopPropagation();
+    }
+  });
+}
+
+function collapseWikiTocForMobile(collapse) {
+  if (collapse) {
+    document.querySelector('.wiki-content-toc details')?.removeAttribute('open');
+  }
+}
+
+export function initRepoWikiForm() {
+  if (!document.querySelector('.page-content.repository.wiki')) return;
+
+  fomanticMobileScreen.addEventListener('change', (e) => collapseWikiTocForMobile(e.matches));
+  collapseWikiTocForMobile(fomanticMobileScreen.matches);
+
+  initRepoWikiFormEditor();
+}
diff --git a/web_src/js/features/sshkey-helper.js b/web_src/js/features/sshkey-helper.js
new file mode 100644
index 00000000..3960eefe
--- /dev/null
+++ b/web_src/js/features/sshkey-helper.js
@@ -0,0 +1,10 @@
+export function initSshKeyFormParser() {
+  // Parse SSH Key
+  document.getElementById('ssh-key-content')?.addEventListener('input', function () {
+    const arrays = this.value.split(' ');
+    const title = document.getElementById('ssh-key-title');
+    if (!title.value && arrays.length === 3 && arrays[2] !== '') {
+      title.value = arrays[2];
+    }
+  });
+}
diff --git a/web_src/js/features/stopwatch.js b/web_src/js/features/stopwatch.js
new file mode 100644
index 00000000..d070f52d
--- /dev/null
+++ b/web_src/js/features/stopwatch.js
@@ -0,0 +1,167 @@
+import prettyMilliseconds from 'pretty-ms';
+import {createTippy} from '../modules/tippy.js';
+import {GET} from '../modules/fetch.js';
+import {hideElem, showElem} from '../utils/dom.js';
+
+const {appSubUrl, notificationSettings, enableTimeTracking, assetVersionEncoded} = window.config;
+
+export function initStopwatch() {
+  if (!enableTimeTracking) {
+    return;
+  }
+
+  const stopwatchEl = document.querySelector('.active-stopwatch-trigger');
+  const stopwatchPopup = document.querySelector('.active-stopwatch-popup');
+
+  if (!stopwatchEl || !stopwatchPopup) {
+    return;
+  }
+
+  stopwatchEl.removeAttribute('href'); // intended for noscript mode only
+
+  createTippy(stopwatchEl, {
+    content: stopwatchPopup,
+    placement: 'bottom-end',
+    trigger: 'click',
+    maxWidth: 'none',
+    interactive: true,
+    hideOnClick: true,
+  });
+
+  // global stop watch (in the head_navbar), it should always work in any case either the EventSource or the PeriodicPoller is used.
+  const currSeconds = document.querySelector('.stopwatch-time')?.getAttribute('data-seconds');
+  if (currSeconds) {
+    updateStopwatchTime(currSeconds);
+  }
+
+  let usingPeriodicPoller = false;
+  const startPeriodicPoller = (timeout) => {
+    if (timeout <= 0 || !Number.isFinite(timeout)) return;
+    usingPeriodicPoller = true;
+    setTimeout(() => updateStopwatchWithCallback(startPeriodicPoller, timeout), timeout);
+  };
+
+  // if the browser supports EventSource and SharedWorker, use it instead of the periodic poller
+  if (notificationSettings.EventSourceUpdateTime > 0 && window.EventSource && window.SharedWorker) {
+    // Try to connect to the event source via the shared worker first
+    const worker = new SharedWorker(`${__webpack_public_path__}js/eventsource.sharedworker.js?v=${assetVersionEncoded}`, 'notification-worker');
+    worker.addEventListener('error', (event) => {
+      console.error('worker error', event);
+    });
+    worker.port.addEventListener('messageerror', () => {
+      console.error('unable to deserialize message');
+    });
+    worker.port.postMessage({
+      type: 'start',
+      url: `${window.location.origin}${appSubUrl}/user/events`,
+    });
+    worker.port.addEventListener('message', (event) => {
+      if (!event.data || !event.data.type) {
+        console.error('unknown worker message event', event);
+        return;
+      }
+      if (event.data.type === 'stopwatches') {
+        updateStopwatchData(JSON.parse(event.data.data));
+      } else if (event.data.type === 'no-event-source') {
+        // browser doesn't support EventSource, falling back to periodic poller
+        if (!usingPeriodicPoller) startPeriodicPoller(notificationSettings.MinTimeout);
+      } else if (event.data.type === 'error') {
+        console.error('worker port event error', event.data);
+      } else if (event.data.type === 'logout') {
+        if (event.data.data !== 'here') {
+          return;
+        }
+        worker.port.postMessage({
+          type: 'close',
+        });
+        worker.port.close();
+        window.location.href = `${window.location.origin}${appSubUrl}/`;
+      } else if (event.data.type === 'close') {
+        worker.port.postMessage({
+          type: 'close',
+        });
+        worker.port.close();
+      }
+    });
+    worker.port.addEventListener('error', (e) => {
+      console.error('worker port error', e);
+    });
+    worker.port.start();
+    window.addEventListener('beforeunload', () => {
+      worker.port.postMessage({
+        type: 'close',
+      });
+      worker.port.close();
+    });
+
+    return;
+  }
+
+  startPeriodicPoller(notificationSettings.MinTimeout);
+}
+
+async function updateStopwatchWithCallback(callback, timeout) {
+  const isSet = await updateStopwatch();
+
+  if (!isSet) {
+    timeout = notificationSettings.MinTimeout;
+  } else if (timeout < notificationSettings.MaxTimeout) {
+    timeout += notificationSettings.TimeoutStep;
+  }
+
+  callback(timeout);
+}
+
+async function updateStopwatch() {
+  const response = await GET(`${appSubUrl}/user/stopwatches`);
+  if (!response.ok) {
+    console.error('Failed to fetch stopwatch data');
+    return false;
+  }
+  const data = await response.json();
+  return updateStopwatchData(data);
+}
+
+function updateStopwatchData(data) {
+  const watch = data[0];
+  const btnEl = document.querySelector('.active-stopwatch-trigger');
+  if (!watch) {
+    clearStopwatchTimer();
+    hideElem(btnEl);
+  } else {
+    const {repo_owner_name, repo_name, issue_index, seconds} = watch;
+    const issueUrl = `${appSubUrl}/${repo_owner_name}/${repo_name}/issues/${issue_index}`;
+    document.querySelector('.stopwatch-link')?.setAttribute('href', issueUrl);
+    document.querySelector('.stopwatch-commit')?.setAttribute('action', `${issueUrl}/times/stopwatch/toggle`);
+    document.querySelector('.stopwatch-cancel')?.setAttribute('action', `${issueUrl}/times/stopwatch/cancel`);
+    const stopwatchIssue = document.querySelector('.stopwatch-issue');
+    if (stopwatchIssue) stopwatchIssue.textContent = `${repo_owner_name}/${repo_name}#${issue_index}`;
+    updateStopwatchTime(seconds);
+    showElem(btnEl);
+  }
+  return Boolean(data.length);
+}
+
+let updateTimeIntervalId = null; // holds setInterval id when active
+function clearStopwatchTimer() {
+  if (updateTimeIntervalId !== null) {
+    clearInterval(updateTimeIntervalId);
+    updateTimeIntervalId = null;
+  }
+}
+function updateStopwatchTime(seconds) {
+  const secs = parseInt(seconds);
+  if (!Number.isFinite(secs)) return;
+
+  clearStopwatchTimer();
+  const stopwatch = document.querySelector('.stopwatch-time');
+  // TODO: replace with <relative-time> similar to how system status up time is shown
+  const start = Date.now();
+  const updateUi = () => {
+    const delta = Date.now() - start;
+    const dur = prettyMilliseconds(secs * 1000 + delta, {compact: true});
+    if (stopwatch) stopwatch.textContent = dur;
+  };
+  updateUi();
+  updateTimeIntervalId = setInterval(updateUi, 1000);
+}
diff --git a/web_src/js/features/tablesort.js b/web_src/js/features/tablesort.js
new file mode 100644
index 00000000..436fe0a5
--- /dev/null
+++ b/web_src/js/features/tablesort.js
@@ -0,0 +1,22 @@
+export function initTableSort() {
+  for (const header of document.querySelectorAll('th[data-sortt-asc]') || []) {
+    const sorttAsc = header.getAttribute('data-sortt-asc');
+    const sorttDesc = header.getAttribute('data-sortt-desc');
+    const sorttDefault = header.getAttribute('data-sortt-default');
+    header.addEventListener('click', () => {
+      tableSort(sorttAsc, sorttDesc, sorttDefault);
+    });
+  }
+}
+
+function tableSort(normSort, revSort, isDefault) {
+  if (!normSort) return false;
+  if (!revSort) revSort = '';
+
+  const url = new URL(window.location);
+  let urlSort = url.searchParams.get('sort');
+  if (!urlSort && isDefault) urlSort = normSort;
+
+  url.searchParams.set('sort', urlSort !== normSort ? normSort : revSort);
+  window.location.replace(url.href);
+}
diff --git a/web_src/js/features/tribute.js b/web_src/js/features/tribute.js
new file mode 100644
index 00000000..02cd4843
--- /dev/null
+++ b/web_src/js/features/tribute.js
@@ -0,0 +1,57 @@
+import {emojiKeys, emojiHTML, emojiString} from './emoji.js';
+import {htmlEscape} from 'escape-goat';
+
+function makeCollections({mentions, emoji}) {
+  const collections = [];
+
+  if (emoji) {
+    collections.push({
+      trigger: ':',
+      requireLeadingSpace: true,
+      values: (query, cb) => {
+        const matches = [];
+        for (const name of emojiKeys) {
+          if (name.includes(query)) {
+            matches.push(name);
+            if (matches.length > 5) break;
+          }
+        }
+        cb(matches);
+      },
+      lookup: (item) => item,
+      selectTemplate: (item) => {
+        if (item === undefined) return null;
+        return emojiString(item.original);
+      },
+      menuItemTemplate: (item) => {
+        return `<div class="tribute-item">${emojiHTML(item.original)}<span>${htmlEscape(item.original)}</span></div>`;
+      },
+    });
+  }
+
+  if (mentions) {
+    collections.push({
+      values: window.config.mentionValues ?? [],
+      requireLeadingSpace: true,
+      menuItemTemplate: (item) => {
+        return `
+          <div class="tribute-item">
+            <img src="${htmlEscape(item.original.avatar)}" class="tw-mr-2"/>
+            <span class="name">${htmlEscape(item.original.name)}</span>
+            ${item.original.fullname && item.original.fullname !== '' ? `<span class="fullname">${htmlEscape(item.original.fullname)}</span>` : ''}
+          </div>
+        `;
+      },
+    });
+  }
+
+  return collections;
+}
+
+export async function attachTribute(element, {mentions, emoji} = {}) {
+  const {default: Tribute} = await import(/* webpackChunkName: "tribute" */'tributejs');
+  const collections = makeCollections({mentions, emoji});
+  const tribute = new Tribute({collection: collections, noMatchTemplate: ''});
+  tribute.attach(element);
+  return tribute;
+}
diff --git a/web_src/js/features/user-auth-webauthn.js b/web_src/js/features/user-auth-webauthn.js
new file mode 100644
index 00000000..6dfbb4d7
--- /dev/null
+++ b/web_src/js/features/user-auth-webauthn.js
@@ -0,0 +1,194 @@
+import {encodeURLEncodedBase64, decodeURLEncodedBase64} from '../utils.js';
+import {showElem} from '../utils/dom.js';
+import {GET, POST} from '../modules/fetch.js';
+
+const {appSubUrl} = window.config;
+
+export async function initUserAuthWebAuthn() {
+  const elPrompt = document.querySelector('.user.signin.webauthn-prompt');
+  if (!elPrompt) {
+    return;
+  }
+
+  if (!detectWebAuthnSupport()) {
+    return;
+  }
+
+  const res = await GET(`${appSubUrl}/user/webauthn/assertion`);
+  if (res.status !== 200) {
+    webAuthnError('unknown');
+    return;
+  }
+  const options = await res.json();
+  options.publicKey.challenge = decodeURLEncodedBase64(options.publicKey.challenge);
+  for (const cred of options.publicKey.allowCredentials) {
+    cred.id = decodeURLEncodedBase64(cred.id);
+  }
+  try {
+    const credential = await navigator.credentials.get({
+      publicKey: options.publicKey,
+    });
+    await verifyAssertion(credential);
+  } catch (err) {
+    if (!options.publicKey.extensions?.appid) {
+      webAuthnError('general', err.message);
+      return;
+    }
+    delete options.publicKey.extensions.appid;
+    try {
+      const credential = await navigator.credentials.get({
+        publicKey: options.publicKey,
+      });
+      await verifyAssertion(credential);
+    } catch (err) {
+      webAuthnError('general', err.message);
+    }
+  }
+}
+
+async function verifyAssertion(assertedCredential) {
+  // Move data into Arrays in case it is super long
+  const authData = new Uint8Array(assertedCredential.response.authenticatorData);
+  const clientDataJSON = new Uint8Array(assertedCredential.response.clientDataJSON);
+  const rawId = new Uint8Array(assertedCredential.rawId);
+  const sig = new Uint8Array(assertedCredential.response.signature);
+  const userHandle = new Uint8Array(assertedCredential.response.userHandle);
+
+  const res = await POST(`${appSubUrl}/user/webauthn/assertion`, {
+    data: {
+      id: assertedCredential.id,
+      rawId: encodeURLEncodedBase64(rawId),
+      type: assertedCredential.type,
+      clientExtensionResults: assertedCredential.getClientExtensionResults(),
+      response: {
+        authenticatorData: encodeURLEncodedBase64(authData),
+        clientDataJSON: encodeURLEncodedBase64(clientDataJSON),
+        signature: encodeURLEncodedBase64(sig),
+        userHandle: encodeURLEncodedBase64(userHandle),
+      },
+    },
+  });
+  if (res.status === 500) {
+    webAuthnError('unknown');
+    return;
+  } else if (res.status !== 200) {
+    webAuthnError('unable-to-process');
+    return;
+  }
+  const reply = await res.json();
+
+  window.location.href = reply?.redirect ?? `${appSubUrl}/`;
+}
+
+async function webauthnRegistered(newCredential) {
+  const attestationObject = new Uint8Array(newCredential.response.attestationObject);
+  const clientDataJSON = new Uint8Array(newCredential.response.clientDataJSON);
+  const rawId = new Uint8Array(newCredential.rawId);
+
+  const res = await POST(`${appSubUrl}/user/settings/security/webauthn/register`, {
+    data: {
+      id: newCredential.id,
+      rawId: encodeURLEncodedBase64(rawId),
+      type: newCredential.type,
+      response: {
+        attestationObject: encodeURLEncodedBase64(attestationObject),
+        clientDataJSON: encodeURLEncodedBase64(clientDataJSON),
+      },
+    },
+  });
+
+  if (res.status === 409) {
+    webAuthnError('duplicated');
+    return;
+  } else if (res.status !== 201) {
+    webAuthnError('unknown');
+    return;
+  }
+
+  window.location.reload();
+}
+
+function webAuthnError(errorType, message) {
+  const elErrorMsg = document.getElementById(`webauthn-error-msg`);
+
+  if (errorType === 'general') {
+    elErrorMsg.textContent = message || 'unknown error';
+  } else {
+    const elTypedError = document.querySelector(`#webauthn-error [data-webauthn-error-msg=${errorType}]`);
+    if (elTypedError) {
+      elErrorMsg.textContent = `${elTypedError.textContent}${message ? ` ${message}` : ''}`;
+    } else {
+      elErrorMsg.textContent = `unknown error type: ${errorType}${message ? ` ${message}` : ''}`;
+    }
+  }
+
+  showElem('#webauthn-error');
+}
+
+function detectWebAuthnSupport() {
+  if (!window.isSecureContext) {
+    webAuthnError('insecure');
+    return false;
+  }
+
+  if (typeof window.PublicKeyCredential !== 'function') {
+    webAuthnError('browser');
+    return false;
+  }
+
+  return true;
+}
+
+export function initUserAuthWebAuthnRegister() {
+  const elRegister = document.getElementById('register-webauthn');
+  if (!elRegister) {
+    return;
+  }
+  if (!detectWebAuthnSupport()) {
+    elRegister.disabled = true;
+    return;
+  }
+  elRegister.addEventListener('click', async (e) => {
+    e.preventDefault();
+    await webAuthnRegisterRequest();
+  });
+}
+
+async function webAuthnRegisterRequest() {
+  const elNickname = document.getElementById('nickname');
+
+  const formData = new FormData();
+  formData.append('name', elNickname.value);
+
+  const res = await POST(`${appSubUrl}/user/settings/security/webauthn/request_register`, {
+    data: formData,
+  });
+
+  if (res.status === 409) {
+    webAuthnError('duplicated');
+    return;
+  } else if (res.status !== 200) {
+    webAuthnError('unknown');
+    return;
+  }
+
+  const options = await res.json();
+  elNickname.closest('div.field').classList.remove('error');
+
+  options.publicKey.challenge = decodeURLEncodedBase64(options.publicKey.challenge);
+  options.publicKey.user.id = decodeURLEncodedBase64(options.publicKey.user.id);
+  if (options.publicKey.excludeCredentials) {
+    for (const cred of options.publicKey.excludeCredentials) {
+      cred.id = decodeURLEncodedBase64(cred.id);
+    }
+  }
+
+  try {
+    const credential = await navigator.credentials.create({
+      publicKey: options.publicKey,
+    });
+    await webauthnRegistered(credential);
+  } catch (err) {
+    webAuthnError('unknown', err);
+  }
+}
diff --git a/web_src/js/features/user-auth.js b/web_src/js/features/user-auth.js
new file mode 100644
index 00000000..a871ac47
--- /dev/null
+++ b/web_src/js/features/user-auth.js
@@ -0,0 +1,22 @@
+import {checkAppUrl} from './common-global.js';
+
+export function initUserAuthOauth2() {
+  const outer = document.getElementById('oauth2-login-navigator');
+  if (!outer) return;
+  const inner = document.getElementById('oauth2-login-navigator-inner');
+
+  checkAppUrl();
+
+  for (const link of outer.querySelectorAll('.oauth-login-link')) {
+    link.addEventListener('click', () => {
+      inner.classList.add('tw-invisible');
+      outer.classList.add('is-loading');
+      setTimeout(() => {
+        // recover previous content to let user try again
+        // usually redirection will be performed before this action
+        outer.classList.remove('is-loading');
+        inner.classList.remove('tw-invisible');
+      }, 5000);
+    });
+  }
+}
diff --git a/web_src/js/features/user-settings.js b/web_src/js/features/user-settings.js
new file mode 100644
index 00000000..717ef945
--- /dev/null
+++ b/web_src/js/features/user-settings.js
@@ -0,0 +1,63 @@
+import {hideElem, showElem} from '../utils/dom.js';
+
+function onPronounsDropdownUpdate() {
+  const pronounsCustom = document.getElementById('pronouns-custom');
+  const pronounsDropdown = document.getElementById('pronouns-dropdown');
+  const pronounsInput = pronounsDropdown.querySelector('input');
+  // must be kept in sync with `routers/web/user/setting/profile.go`
+  const isCustom = !(
+    pronounsInput.value === '' ||
+    pronounsInput.value === 'he/him' ||
+    pronounsInput.value === 'she/her' ||
+    pronounsInput.value === 'they/them' ||
+    pronounsInput.value === 'it/its' ||
+    pronounsInput.value === 'any pronouns'
+  );
+  if (isCustom) {
+    if (pronounsInput.value === '!') {
+      pronounsCustom.value = '';
+    } else {
+      pronounsCustom.value = pronounsInput.value;
+    }
+    pronounsCustom.style.display = '';
+  } else {
+    pronounsCustom.style.display = 'none';
+  }
+}
+function onPronounsCustomUpdate() {
+  const pronounsCustom = document.getElementById('pronouns-custom');
+  const pronounsInput = document.querySelector('#pronouns-dropdown input');
+  pronounsInput.value = pronounsCustom.value;
+}
+
+export function initUserSettings() {
+  if (!document.querySelectorAll('.user.settings.profile').length) return;
+
+  const usernameInput = document.getElementById('username');
+  if (!usernameInput) return;
+  usernameInput.addEventListener('input', function () {
+    const prompt = document.getElementById('name-change-prompt');
+    const promptRedirect = document.getElementById('name-change-redirect-prompt');
+    if (this.value.toLowerCase() !== this.getAttribute('data-name').toLowerCase()) {
+      showElem(prompt);
+      showElem(promptRedirect);
+    } else {
+      hideElem(prompt);
+      hideElem(promptRedirect);
+    }
+  });
+
+  const pronounsDropdown = document.getElementById('pronouns-dropdown');
+  const pronounsCustom = document.getElementById('pronouns-custom');
+  const pronounsInput = pronounsDropdown.querySelector('input');
+
+  // If JS is disabled, the page will show the custom input, as the dropdown requires JS to work.
+  // JS progressively enhances the input by adding a dropdown, but it works regardless.
+  pronounsCustom.removeAttribute('name');
+  pronounsInput.setAttribute('name', 'pronouns');
+  pronounsDropdown.style.display = '';
+
+  onPronounsDropdownUpdate();
+  pronounsInput.addEventListener('change', onPronounsDropdownUpdate);
+  pronounsCustom.addEventListener('input', onPronounsCustomUpdate);
+}
diff --git a/web_src/js/htmx.js b/web_src/js/htmx.js
new file mode 100644
index 00000000..5ca30183
--- /dev/null
+++ b/web_src/js/htmx.js
@@ -0,0 +1,21 @@
+import * as htmx from 'htmx.org';
+import {showErrorToast} from './modules/toast.js';
+
+// https://github.com/bigskysoftware/idiomorph#htmx
+import 'idiomorph/dist/idiomorph-ext.js';
+
+// https://htmx.org/reference/#config
+htmx.config.requestClass = 'is-loading';
+htmx.config.scrollIntoViewOnBoost = false;
+
+// https://htmx.org/events/#htmx:sendError
+document.body.addEventListener('htmx:sendError', (event) => {
+  // TODO: add translations
+  showErrorToast(`Network error when calling ${event.detail.requestConfig.path}`);
+});
+
+// https://htmx.org/events/#htmx:responseError
+document.body.addEventListener('htmx:responseError', (event) => {
+  // TODO: add translations
+  showErrorToast(`Error ${event.detail.xhr.status} when calling ${event.detail.requestConfig.path}`);
+});
diff --git a/web_src/js/index.js b/web_src/js/index.js
new file mode 100644
index 00000000..51ff56fd
--- /dev/null
+++ b/web_src/js/index.js
@@ -0,0 +1,191 @@
+// bootstrap module must be the first one to be imported, it handles webpack lazy-loading and global errors
+import './bootstrap.js';
+
+import {initRepoActivityTopAuthorsChart} from './components/RepoActivityTopAuthors.vue';
+import {initScopedAccessTokenCategories} from './components/ScopedAccessTokenSelector.vue';
+import {initDashboardRepoList} from './components/DashboardRepoList.vue';
+
+import {initGlobalCopyToClipboardListener} from './features/clipboard.js';
+import {initContextPopups} from './features/contextpopup.js';
+import {initRepoGraphGit} from './features/repo-graph.js';
+import {initHeatmap} from './features/heatmap.js';
+import {initImageDiff} from './features/imagediff.js';
+import {initRepoMigration} from './features/repo-migration.js';
+import {initRepoProject} from './features/repo-projects.js';
+import {initTableSort} from './features/tablesort.js';
+import {initAutoFocusEnd} from './features/autofocus-end.js';
+import {initAdminUserListSearchForm} from './features/admin/users.js';
+import {initAdminConfigs} from './features/admin/config.js';
+import {initMarkupAnchors} from './markup/anchors.js';
+import {initNotificationCount, initNotificationsTable} from './features/notification.js';
+import {initRepoIssueContentHistory} from './features/repo-issue-content.js';
+import {initStopwatch} from './features/stopwatch.js';
+import {initFindFileInRepo} from './features/repo-findfile.js';
+import {initCommentContent, initMarkupContent} from './markup/content.js';
+import {initPdfViewer} from './render/pdf.js';
+
+import {initUserAuthOauth2} from './features/user-auth.js';
+import {
+  initRepoIssueDue,
+  initRepoIssueReferenceRepositorySearch,
+  initRepoIssueTimeTracking,
+  initRepoIssueWipTitle,
+  initRepoPullRequestAllowMaintainerEdit,
+  initRepoPullRequestReview, initRepoIssueSidebarList, initArchivedLabelHandler,
+} from './features/repo-issue.js';
+import {initRepoEllipsisButton, initCommitStatuses} from './features/repo-commit.js';
+import {
+  initFootLanguageMenu,
+  initGlobalButtonClickOnEnter,
+  initGlobalButtons,
+  initGlobalCommon,
+  initGlobalDropzone,
+  initGlobalEnterQuickSubmit,
+  initGlobalFormDirtyLeaveConfirm,
+  initGlobalLinkActions,
+  initHeadNavbarContentToggle,
+} from './features/common-global.js';
+import {initRepoTopicBar} from './features/repo-home.js';
+import {initAdminEmails} from './features/admin/emails.js';
+import {initAdminCommon} from './features/admin/common.js';
+import {initRepoTemplateSearch} from './features/repo-template.js';
+import {initRepoCodeView} from './features/repo-code.js';
+import {initSshKeyFormParser} from './features/sshkey-helper.js';
+import {initUserSettings} from './features/user-settings.js';
+import {initRepoArchiveLinks} from './features/repo-common.js';
+import {initRepoMigrationStatusChecker} from './features/repo-migrate.js';
+import {
+  initRepoSettingGitHook,
+  initRepoSettingsCollaboration,
+  initRepoSettingSearchTeamBox,
+} from './features/repo-settings.js';
+import {initRepoDiffView} from './features/repo-diff.js';
+import {initOrgTeamSearchRepoBox, initOrgTeamSettings} from './features/org-team.js';
+import {initUserAuthWebAuthn, initUserAuthWebAuthnRegister} from './features/user-auth-webauthn.js';
+import {initRepoRelease, initRepoReleaseNew} from './features/repo-release.js';
+import {initRepoEditor} from './features/repo-editor.js';
+import {initCompSearchUserBox} from './features/comp/SearchUserBox.js';
+import {initInstall} from './features/install.js';
+import {initCompWebHookEditor} from './features/comp/WebHookEditor.js';
+import {initRepoBranchButton} from './features/repo-branch.js';
+import {initCommonOrganization} from './features/common-organization.js';
+import {initRepoWikiForm} from './features/repo-wiki.js';
+import {initRepoCommentForm, initRepository} from './features/repo-legacy.js';
+import {initCopyContent} from './features/copycontent.js';
+import {initCaptcha} from './features/captcha.js';
+import {initRepositoryActionView} from './components/RepoActionView.vue';
+import {initGlobalTooltips} from './modules/tippy.js';
+import {initGiteaFomantic} from './modules/fomantic.js';
+import {onDomReady} from './utils/dom.js';
+import {initRepoIssueList} from './features/repo-issue-list.js';
+import {initCommonIssueListQuickGoto} from './features/common-issue-list.js';
+import {initRepoContributors} from './features/contributors.js';
+import {initRepoCodeFrequency} from './features/code-frequency.js';
+import {initRepoRecentCommits} from './features/recent-commits.js';
+import {initRepoDiffCommitBranchesAndTags} from './features/repo-diff-commit.js';
+import {initDirAuto} from './modules/dirauto.js';
+import {initRepositorySearch} from './features/repo-search.js';
+import {initColorPickers} from './features/colorpicker.js';
+
+// Init Gitea's Fomantic settings
+initGiteaFomantic();
+initDirAuto();
+
+onDomReady(() => {
+  initGlobalCommon();
+
+  initGlobalTooltips();
+  initGlobalButtonClickOnEnter();
+  initGlobalButtons();
+  initGlobalCopyToClipboardListener();
+  initGlobalDropzone();
+  initGlobalEnterQuickSubmit();
+  initGlobalFormDirtyLeaveConfirm();
+  initGlobalLinkActions();
+
+  initCommonOrganization();
+  initCommonIssueListQuickGoto();
+
+  initCompSearchUserBox();
+  initCompWebHookEditor();
+
+  initInstall();
+
+  initHeadNavbarContentToggle();
+  initFootLanguageMenu();
+
+  initCommentContent();
+  initContextPopups();
+  initHeatmap();
+  initImageDiff();
+  initMarkupAnchors();
+  initMarkupContent();
+  initSshKeyFormParser();
+  initStopwatch();
+  initTableSort();
+  initAutoFocusEnd();
+  initFindFileInRepo();
+  initCopyContent();
+
+  initAdminCommon();
+  initAdminEmails();
+  initAdminUserListSearchForm();
+  initAdminConfigs();
+
+  initDashboardRepoList();
+
+  initNotificationCount();
+  initNotificationsTable();
+
+  initOrgTeamSearchRepoBox();
+  initOrgTeamSettings();
+
+  initRepoActivityTopAuthorsChart();
+  initRepoArchiveLinks();
+  initRepoBranchButton();
+  initRepoCodeView();
+  initRepoCommentForm();
+  initRepoEllipsisButton();
+  initRepoDiffCommitBranchesAndTags();
+  initRepoEditor();
+  initRepoGraphGit();
+  initRepoIssueContentHistory();
+  initRepoIssueDue();
+  initRepoIssueList();
+  initRepoIssueSidebarList();
+  initArchivedLabelHandler();
+  initRepoIssueReferenceRepositorySearch();
+  initRepoIssueTimeTracking();
+  initRepoIssueWipTitle();
+  initRepoMigration();
+  initRepoMigrationStatusChecker();
+  initRepoProject();
+  initRepoPullRequestAllowMaintainerEdit();
+  initRepoPullRequestReview();
+  initRepoRelease();
+  initRepoReleaseNew();
+  initRepoSettingGitHook();
+  initRepoSettingSearchTeamBox();
+  initRepoSettingsCollaboration();
+  initRepoTemplateSearch();
+  initRepoTopicBar();
+  initRepoWikiForm();
+  initRepository();
+  initRepositoryActionView();
+  initRepositorySearch();
+  initRepoContributors();
+  initRepoCodeFrequency();
+  initRepoRecentCommits();
+
+  initCommitStatuses();
+  initCaptcha();
+
+  initUserAuthOauth2();
+  initUserAuthWebAuthn();
+  initUserAuthWebAuthnRegister();
+  initUserSettings();
+  initRepoDiffView();
+  initPdfViewer();
+  initScopedAccessTokenCategories();
+  initColorPickers();
+});
diff --git a/web_src/js/jquery.js b/web_src/js/jquery.js
new file mode 100644
index 00000000..6b219989
--- /dev/null
+++ b/web_src/js/jquery.js
@@ -0,0 +1,3 @@
+import $ from 'jquery';
+
+window.$ = window.jQuery = $; // eslint-disable-line no-jquery/variable-pattern
diff --git a/web_src/js/markup/anchors.js b/web_src/js/markup/anchors.js
new file mode 100644
index 00000000..0e2c9271
--- /dev/null
+++ b/web_src/js/markup/anchors.js
@@ -0,0 +1,70 @@
+import {svg} from '../svg.js';
+
+const addPrefix = (str) => `user-content-${str}`;
+const removePrefix = (str) => str.replace(/^user-content-/, '');
+const hasPrefix = (str) => str.startsWith('user-content-');
+
+// scroll to anchor while respecting the `user-content` prefix that exists on the target
+function scrollToAnchor(encodedId) {
+  if (!encodedId) return;
+  const id = decodeURIComponent(encodedId);
+  const prefixedId = addPrefix(id);
+  let el = document.getElementById(prefixedId);
+
+  // check for matching user-generated `a[name]`
+  if (!el) {
+    const nameAnchors = document.getElementsByName(prefixedId);
+    if (nameAnchors.length) {
+      el = nameAnchors[0];
+    }
+  }
+
+  // compat for links with old 'user-content-' prefixed hashes
+  if (!el && hasPrefix(id)) {
+    return document.getElementById(id)?.scrollIntoView();
+  }
+
+  el?.scrollIntoView();
+}
+
+export function initMarkupAnchors() {
+  const markupEls = document.querySelectorAll('.markup');
+  if (!markupEls.length) return;
+
+  for (const markupEl of markupEls) {
+    // create link icons for markup headings, the resulting link href will remove `user-content-`
+    for (const heading of markupEl.querySelectorAll('h1, h2, h3, h4, h5, h6')) {
+      const a = document.createElement('a');
+      a.classList.add('anchor');
+      a.setAttribute('href', `#${encodeURIComponent(removePrefix(heading.id))}`);
+      a.innerHTML = svg('octicon-link');
+      heading.prepend(a);
+    }
+
+    // remove `user-content-` prefix from links so they don't show in url bar when clicked
+    for (const a of markupEl.querySelectorAll('a[href^="#"]')) {
+      const href = a.getAttribute('href');
+      if (!href.startsWith('#user-content-')) continue;
+      a.setAttribute('href', `#${removePrefix(href.substring(1))}`);
+    }
+
+    // add `user-content-` prefix to user-generated `a[name]` link targets
+    // TODO: this prefix should be added in backend instead
+    for (const a of markupEl.querySelectorAll('a[name]')) {
+      const name = a.getAttribute('name');
+      if (!name) continue;
+      a.setAttribute('name', addPrefix(a.name));
+    }
+
+    for (const a of markupEl.querySelectorAll('a[href^="#"]')) {
+      a.addEventListener('click', (e) => {
+        scrollToAnchor(e.currentTarget.getAttribute('href')?.substring(1));
+      });
+    }
+  }
+
+  // scroll to anchor unless the browser has already scrolled somewhere during page load
+  if (!document.querySelector(':target')) {
+    scrollToAnchor(window.location.hash?.substring(1));
+  }
+}
diff --git a/web_src/js/markup/asciicast.js b/web_src/js/markup/asciicast.js
new file mode 100644
index 00000000..97b18743
--- /dev/null
+++ b/web_src/js/markup/asciicast.js
@@ -0,0 +1,17 @@
+export async function renderAsciicast() {
+  const els = document.querySelectorAll('.asciinema-player-container');
+  if (!els.length) return;
+
+  const [player] = await Promise.all([
+    import(/* webpackChunkName: "asciinema-player" */'asciinema-player'),
+    import(/* webpackChunkName: "asciinema-player" */'asciinema-player/dist/bundle/asciinema-player.css'),
+  ]);
+
+  for (const el of els) {
+    player.create(el.getAttribute('data-asciinema-player-src'), el, {
+      // poster (a preview frame) to display until the playback is started.
+      // Set it to 1 hour (also means the end if the video is shorter) to make the preview frame show more.
+      poster: 'npt:1:0:0',
+    });
+  }
+}
diff --git a/web_src/js/markup/codecopy.js b/web_src/js/markup/codecopy.js
new file mode 100644
index 00000000..078d7412
--- /dev/null
+++ b/web_src/js/markup/codecopy.js
@@ -0,0 +1,21 @@
+import {svg} from '../svg.js';
+
+export function makeCodeCopyButton() {
+  const button = document.createElement('button');
+  button.classList.add('code-copy', 'ui', 'button');
+  button.innerHTML = svg('octicon-copy');
+  return button;
+}
+
+export function renderCodeCopy() {
+  const els = document.querySelectorAll('.markup .code-block code');
+  if (!els.length) return;
+
+  for (const el of els) {
+    if (!el.textContent) continue;
+    const btn = makeCodeCopyButton();
+    // remove final trailing newline introduced during HTML rendering
+    btn.setAttribute('data-clipboard-text', el.textContent.replace(/\r?\n$/, ''));
+    el.after(btn);
+  }
+}
diff --git a/web_src/js/markup/common.js b/web_src/js/markup/common.js
new file mode 100644
index 00000000..aff4a324
--- /dev/null
+++ b/web_src/js/markup/common.js
@@ -0,0 +1,8 @@
+export function displayError(el, err) {
+  el.classList.remove('is-loading');
+  const errorNode = document.createElement('pre');
+  errorNode.setAttribute('class', 'ui message error markup-block-error');
+  errorNode.textContent = err.str || err.message || String(err);
+  el.before(errorNode);
+  el.setAttribute('data-render-done', 'true');
+}
diff --git a/web_src/js/markup/content.js b/web_src/js/markup/content.js
new file mode 100644
index 00000000..1d29dc07
--- /dev/null
+++ b/web_src/js/markup/content.js
@@ -0,0 +1,18 @@
+import {renderMermaid} from './mermaid.js';
+import {renderMath} from './math.js';
+import {renderCodeCopy} from './codecopy.js';
+import {renderAsciicast} from './asciicast.js';
+import {initMarkupTasklist} from './tasklist.js';
+
+// code that runs for all markup content
+export function initMarkupContent() {
+  renderMermaid();
+  renderMath();
+  renderCodeCopy();
+  renderAsciicast();
+}
+
+// code that only runs for comments
+export function initCommentContent() {
+  initMarkupTasklist();
+}
diff --git a/web_src/js/markup/math.js b/web_src/js/markup/math.js
new file mode 100644
index 00000000..872e50a4
--- /dev/null
+++ b/web_src/js/markup/math.js
@@ -0,0 +1,47 @@
+import {displayError} from './common.js';
+
+function targetElement(el) {
+  // The target element is either the current element if it has the
+  // `is-loading` class or the pre that contains it
+  return el.classList.contains('is-loading') ? el : el.closest('pre');
+}
+
+export async function renderMath() {
+  const els = document.querySelectorAll('.markup code.language-math');
+  if (!els.length) return;
+
+  const [{default: katex}] = await Promise.all([
+    import(/* webpackChunkName: "katex" */'katex'),
+    import(/* webpackChunkName: "katex" */'katex/dist/katex.css'),
+  ]);
+
+  const MAX_CHARS = 1000;
+  const MAX_SIZE = 25;
+  const MAX_EXPAND = 1000;
+
+  for (const el of els) {
+    const target = targetElement(el);
+    if (target.hasAttribute('data-render-done')) continue;
+    const source = el.textContent;
+
+    if (source.length > MAX_CHARS) {
+      displayError(target, new Error(`Math source of ${source.length} characters exceeds the maximum allowed length of ${MAX_CHARS}.`));
+      continue;
+    }
+
+    const displayMode = el.classList.contains('display');
+    const nodeName = displayMode ? 'p' : 'span';
+
+    try {
+      const tempEl = document.createElement(nodeName);
+      katex.render(source, tempEl, {
+        maxSize: MAX_SIZE,
+        maxExpand: MAX_EXPAND,
+        displayMode,
+      });
+      target.replaceWith(tempEl);
+    } catch (error) {
+      displayError(target, error);
+    }
+  }
+}
diff --git a/web_src/js/markup/mermaid.js b/web_src/js/markup/mermaid.js
new file mode 100644
index 00000000..0549fb3e
--- /dev/null
+++ b/web_src/js/markup/mermaid.js
@@ -0,0 +1,74 @@
+import {isDarkTheme} from '../utils.js';
+import {makeCodeCopyButton} from './codecopy.js';
+import {displayError} from './common.js';
+
+const {mermaidMaxSourceCharacters} = window.config;
+
+// margin removal is for https://github.com/mermaid-js/mermaid/issues/4907
+const iframeCss = `:root {color-scheme: normal}
+body {margin: 0; padding: 0; overflow: hidden}
+#mermaid {display: block; margin: 0 auto}
+blockquote, dd, dl, figure, h1, h2, h3, h4, h5, h6, hr, p, pre {margin: 0}`;
+
+export async function renderMermaid() {
+  const els = document.querySelectorAll('.markup code.language-mermaid');
+  if (!els.length) return;
+
+  const {default: mermaid} = await import(/* webpackChunkName: "mermaid" */'mermaid');
+
+  mermaid.initialize({
+    startOnLoad: false,
+    theme: isDarkTheme() ? 'dark' : 'neutral',
+    securityLevel: 'strict',
+  });
+
+  for (const el of els) {
+    const pre = el.closest('pre');
+    if (pre.hasAttribute('data-render-done')) continue;
+
+    const source = el.textContent;
+    if (mermaidMaxSourceCharacters >= 0 && source.length > mermaidMaxSourceCharacters) {
+      displayError(pre, new Error(`Mermaid source of ${source.length} characters exceeds the maximum allowed length of ${mermaidMaxSourceCharacters}.`));
+      continue;
+    }
+
+    try {
+      await mermaid.parse(source);
+    } catch (err) {
+      displayError(pre, err);
+      continue;
+    }
+
+    try {
+      // can't use bindFunctions here because we can't cross the iframe boundary. This
+      // means js-based interactions won't work but they aren't intended to work either
+      const {svg} = await mermaid.render('mermaid', source);
+
+      const iframe = document.createElement('iframe');
+      iframe.classList.add('markup-render', 'tw-invisible');
+      iframe.srcdoc = `<html><head><style>${iframeCss}</style></head><body>${svg}</body></html>`;
+
+      const mermaidBlock = document.createElement('div');
+      mermaidBlock.classList.add('mermaid-block', 'is-loading', 'tw-hidden');
+      mermaidBlock.append(iframe);
+
+      const btn = makeCodeCopyButton();
+      btn.setAttribute('data-clipboard-text', source);
+      mermaidBlock.append(btn);
+
+      iframe.addEventListener('load', () => {
+        pre.replaceWith(mermaidBlock);
+        mermaidBlock.classList.remove('tw-hidden');
+        iframe.style.height = `${iframe.contentWindow.document.body.clientHeight}px`;
+        setTimeout(() => { // avoid flash of iframe background
+          mermaidBlock.classList.remove('is-loading');
+          iframe.classList.remove('tw-invisible');
+        }, 0);
+      });
+
+      document.body.append(mermaidBlock);
+    } catch (err) {
+      displayError(pre, err);
+    }
+  }
+}
diff --git a/web_src/js/markup/tasklist.js b/web_src/js/markup/tasklist.js
new file mode 100644
index 00000000..375810dc
--- /dev/null
+++ b/web_src/js/markup/tasklist.js
@@ -0,0 +1,90 @@
+import {POST} from '../modules/fetch.js';
+import {showErrorToast} from '../modules/toast.js';
+
+const preventListener = (e) => e.preventDefault();
+
+/**
+ * Attaches `input` handlers to markdown rendered tasklist checkboxes in comments.
+ *
+ * When a checkbox value changes, the corresponding [ ] or [x] in the markdown string
+ * is set accordingly and sent to the server. On success it updates the raw-content on
+ * error it resets the checkbox to its original value.
+ */
+export function initMarkupTasklist() {
+  for (const el of document.querySelectorAll(`.markup[data-can-edit=true]`) || []) {
+    const container = el.parentNode;
+    const checkboxes = el.querySelectorAll(`.task-list-item input[type=checkbox]`);
+
+    for (const checkbox of checkboxes) {
+      if (checkbox.hasAttribute('data-editable')) {
+        return;
+      }
+
+      checkbox.setAttribute('data-editable', 'true');
+      checkbox.addEventListener('input', async () => {
+        const checkboxCharacter = checkbox.checked ? 'x' : ' ';
+        const position = parseInt(checkbox.getAttribute('data-source-position')) + 1;
+
+        const rawContent = container.querySelector('.raw-content');
+        const oldContent = rawContent.textContent;
+
+        const encoder = new TextEncoder();
+        const buffer = encoder.encode(oldContent);
+        // Indexes may fall off the ends and return undefined.
+        if (buffer[position - 1] !== '['.codePointAt(0) ||
+          buffer[position] !== ' '.codePointAt(0) && buffer[position] !== 'x'.codePointAt(0) && buffer[position] !== 'X'.codePointAt(0) ||
+          buffer[position + 1] !== ']'.codePointAt(0)) {
+          // Position is probably wrong.  Revert and don't allow change.
+          checkbox.checked = !checkbox.checked;
+          throw new Error(`Expected position to be space, x or X and surrounded by brackets, but it's not: position=${position}`);
+        }
+        buffer.set(encoder.encode(checkboxCharacter), position);
+        const newContent = new TextDecoder().decode(buffer);
+
+        if (newContent === oldContent) {
+          return;
+        }
+
+        // Prevent further inputs until the request is done. This does not use the
+        // `disabled` attribute because it causes the border to flash on click.
+        for (const checkbox of checkboxes) {
+          checkbox.addEventListener('click', preventListener);
+        }
+
+        try {
+          const editContentZone = container.querySelector('.edit-content-zone');
+          const updateUrl = editContentZone.getAttribute('data-update-url');
+          const context = editContentZone.getAttribute('data-context');
+          const contentVersion = editContentZone.getAttribute('data-content-version');
+
+          const requestBody = new FormData();
+          requestBody.append('ignore_attachments', 'true');
+          requestBody.append('content', newContent);
+          requestBody.append('context', context);
+          requestBody.append('content_version', contentVersion);
+          const response = await POST(updateUrl, {data: requestBody});
+          const data = await response.json();
+          if (response.status === 400) {
+            showErrorToast(data.errorMessage);
+            return;
+          }
+          editContentZone.setAttribute('data-content-version', data.contentVersion);
+          rawContent.textContent = newContent;
+        } catch (err) {
+          checkbox.checked = !checkbox.checked;
+          console.error(err);
+        }
+
+        // Enable input on checkboxes again
+        for (const checkbox of checkboxes) {
+          checkbox.removeEventListener('click', preventListener);
+        }
+      });
+    }
+
+    // Enable the checkboxes as they are initially disabled by the markdown renderer
+    for (const checkbox of checkboxes) {
+      checkbox.disabled = false;
+    }
+  }
+}
diff --git a/web_src/js/modules/dirauto.js b/web_src/js/modules/dirauto.js
new file mode 100644
index 00000000..cd90f815
--- /dev/null
+++ b/web_src/js/modules/dirauto.js
@@ -0,0 +1,40 @@
+import {isDocumentFragmentOrElementNode} from '../utils/dom.js';
+
+// for performance considerations, it only uses performant syntax
+function attachDirAuto(el) {
+  if (el.type !== 'hidden' &&
+      el.type !== 'checkbox' &&
+      el.type !== 'radio' &&
+      el.type !== 'range' &&
+      el.type !== 'color') {
+    el.dir = 'auto';
+  }
+}
+
+export function initDirAuto() {
+  const observer = new MutationObserver((mutationList) => {
+    const len = mutationList.length;
+    for (let i = 0; i < len; i++) {
+      const mutation = mutationList[i];
+      const len = mutation.addedNodes.length;
+      for (let i = 0; i < len; i++) {
+        const addedNode = mutation.addedNodes[i];
+        if (!isDocumentFragmentOrElementNode(addedNode)) continue;
+        if (addedNode.nodeName === 'INPUT' || addedNode.nodeName === 'TEXTAREA') attachDirAuto(addedNode);
+        const children = addedNode.querySelectorAll('input, textarea');
+        const len = children.length;
+        for (let childIdx = 0; childIdx < len; childIdx++) {
+          attachDirAuto(children[childIdx]);
+        }
+      }
+    }
+  });
+
+  const docNodes = document.querySelectorAll('input, textarea');
+  const len = docNodes.length;
+  for (let i = 0; i < len; i++) {
+    attachDirAuto(docNodes[i]);
+  }
+
+  observer.observe(document, {subtree: true, childList: true});
+}
diff --git a/web_src/js/modules/fetch.js b/web_src/js/modules/fetch.js
new file mode 100644
index 00000000..2191a8d4
--- /dev/null
+++ b/web_src/js/modules/fetch.js
@@ -0,0 +1,41 @@
+import {isObject} from '../utils.js';
+
+const {csrfToken} = window.config;
+
+// safe HTTP methods that don't need a csrf token
+const safeMethods = new Set(['GET', 'HEAD', 'OPTIONS', 'TRACE']);
+
+// fetch wrapper, use below method name functions and the `data` option to pass in data
+// which will automatically set an appropriate headers. For json content, only object
+// and array types are currently supported.
+export function request(url, {method = 'GET', data, headers = {}, ...other} = {}) {
+  let body, contentType;
+  if (data instanceof FormData || data instanceof URLSearchParams) {
+    body = data;
+  } else if (isObject(data) || Array.isArray(data)) {
+    contentType = 'application/json';
+    body = JSON.stringify(data);
+  }
+
+  const headersMerged = new Headers({
+    ...(!safeMethods.has(method) && {'x-csrf-token': csrfToken}),
+    ...(contentType && {'content-type': contentType}),
+  });
+
+  for (const [name, value] of Object.entries(headers)) {
+    headersMerged.set(name, value);
+  }
+
+  return fetch(url, {
+    method,
+    headers: headersMerged,
+    ...other,
+    ...(body && {body}),
+  });
+}
+
+export const GET = (url, opts) => request(url, {method: 'GET', ...opts});
+export const POST = (url, opts) => request(url, {method: 'POST', ...opts});
+export const PATCH = (url, opts) => request(url, {method: 'PATCH', ...opts});
+export const PUT = (url, opts) => request(url, {method: 'PUT', ...opts});
+export const DELETE = (url, opts) => request(url, {method: 'DELETE', ...opts});
diff --git a/web_src/js/modules/fetch.test.js b/web_src/js/modules/fetch.test.js
new file mode 100644
index 00000000..e4bec3ce
--- /dev/null
+++ b/web_src/js/modules/fetch.test.js
@@ -0,0 +1,10 @@
+import {GET, POST, PATCH, PUT, DELETE} from './fetch.js';
+
+// tests here are only to satisfy the linter for unused functions
+test('exports', () => {
+  expect(GET).toBeTruthy();
+  expect(POST).toBeTruthy();
+  expect(PATCH).toBeTruthy();
+  expect(PUT).toBeTruthy();
+  expect(DELETE).toBeTruthy();
+});
diff --git a/web_src/js/modules/fomantic.js b/web_src/js/modules/fomantic.js
new file mode 100644
index 00000000..c04bc6e8
--- /dev/null
+++ b/web_src/js/modules/fomantic.js
@@ -0,0 +1,34 @@
+import $ from 'jquery';
+import {initFomanticApiPatch} from './fomantic/api.js';
+import {initAriaCheckboxPatch} from './fomantic/checkbox.js';
+import {initAriaFormFieldPatch} from './fomantic/form.js';
+import {initAriaDropdownPatch} from './fomantic/dropdown.js';
+import {initAriaModalPatch} from './fomantic/modal.js';
+import {initFomanticTransition} from './fomantic/transition.js';
+import {svg} from '../svg.js';
+
+export const fomanticMobileScreen = window.matchMedia('only screen and (max-width: 767.98px)');
+
+export function initGiteaFomantic() {
+  // Silence fomantic's error logging when tabs are used without a target content element
+  $.fn.tab.settings.silent = true;
+
+  // By default, use "exact match" for full text search
+  $.fn.dropdown.settings.fullTextSearch = 'exact';
+  // Do not use "cursor: pointer" for dropdown labels
+  $.fn.dropdown.settings.className.label += ' tw-cursor-default';
+  // Always use Gitea's SVG icons
+  $.fn.dropdown.settings.templates.label = function(_value, text, preserveHTML, className) {
+    const escape = $.fn.dropdown.settings.templates.escape;
+    return escape(text, preserveHTML) + svg('octicon-x', 16, `${className.delete} icon`);
+  };
+
+  initFomanticTransition();
+  initFomanticApiPatch();
+
+  // Use the patches to improve accessibility, these patches are designed to be as independent as possible, make it easy to modify or remove in the future.
+  initAriaCheckboxPatch();
+  initAriaFormFieldPatch();
+  initAriaDropdownPatch();
+  initAriaModalPatch();
+}
diff --git a/web_src/js/modules/fomantic/api.js b/web_src/js/modules/fomantic/api.js
new file mode 100644
index 00000000..ca212c9f
--- /dev/null
+++ b/web_src/js/modules/fomantic/api.js
@@ -0,0 +1,40 @@
+import $ from 'jquery';
+
+export function initFomanticApiPatch() {
+  //
+  // Fomantic API module has some very buggy behaviors:
+  //
+  // If encodeParameters=true, it calls `urlEncodedValue` to encode the parameter.
+  // However, `urlEncodedValue` just tries to "guess" whether the parameter is already encoded, by decoding the parameter and encoding it again.
+  //
+  // There are 2 problems:
+  // 1. It may guess wrong, and skip encoding a parameter which looks like encoded.
+  // 2. If the parameter can't be decoded, `decodeURIComponent` will throw an error, and the whole request will fail.
+  //
+  // This patch only fixes the second error behavior at the moment.
+  //
+  const patchKey = '_giteaFomanticApiPatch';
+  const oldApi = $.api;
+  $.api = $.fn.api = function(...args) {
+    const apiCall = oldApi.bind(this);
+    const ret = oldApi.apply(this, args);
+
+    if (typeof args[0] !== 'string') {
+      const internalGet = apiCall('internal', 'get');
+      if (!internalGet.urlEncodedValue[patchKey]) {
+        const oldUrlEncodedValue = internalGet.urlEncodedValue;
+        internalGet.urlEncodedValue = function (value) {
+          try {
+            return oldUrlEncodedValue(value);
+          } catch {
+            // if Fomantic API module's `urlEncodedValue` throws an error, we encode it by ourselves.
+            return encodeURIComponent(value);
+          }
+        };
+        internalGet.urlEncodedValue[patchKey] = true;
+      }
+    }
+    return ret;
+  };
+  $.api.settings = oldApi.settings;
+}
diff --git a/web_src/js/modules/fomantic/aria.md b/web_src/js/modules/fomantic/aria.md
new file mode 100644
index 00000000..5836a345
--- /dev/null
+++ b/web_src/js/modules/fomantic/aria.md
@@ -0,0 +1,117 @@
+# Background
+
+This document is used as aria/accessibility(a11y) reference for future developers.
+
+There are a lot of a11y problems in the Fomantic UI library. Files in 
+`web_src/js/modules/fomantic/` are used as a workaround to make the UI more accessible.
+
+The aria-related code is designed to avoid touching the official Fomantic UI library,
+and to be as independent as possible, so it can be easily modified/removed in the future.
+
+To test the aria/accessibility with screen readers, developers can use the following steps:
+
+* On macOS, you can use VoiceOver.
+  * Press `Command + F5` to turn on VoiceOver.
+  * Try to operate the UI with keyboard-only.
+  * Use Tab/Shift+Tab to switch focus between elements.
+  * Arrow keys (Option+Up/Down) to navigate between menu/combobox items (only aria-active, not really focused).
+  * Press Enter to trigger the aria-active element.
+* On Android, you can use TalkBack.
+  * Go to Settings -> Accessibility -> TalkBack, turn it on.
+  * Long-press or press+swipe to switch the aria-active element (not really focused).
+  * Double-tap means old single-tap on the aria-active element.
+  * Double-finger swipe means old single-finger swipe.
+* TODO: on Windows, on Linux, on iOS
+
+# Known Problems
+
+* Tested with Apple VoiceOver: If a dropdown menu/combobox is opened by mouse click, then arrow keys don't work.
+  But if the dropdown is opened by keyboard Tab, then arrow keys work, and from then on, the keys almost work with mouse click too.
+  The clue: when the dropdown is only opened by mouse click, VoiceOver doesn't send 'keydown' events of arrow keys to the DOM,
+  VoiceOver expects to use arrow keys to navigate between some elements, but it couldn't.
+  Users could use Option+ArrowKeys to navigate between menu/combobox items or selection labels if the menu/combobox is opened by mouse click.
+
+# Checkbox
+
+## Accessibility-friendly Checkbox
+
+The ideal checkboxes should be:
+
+```html
+<label><input type="checkbox"> ... </label>
+```
+
+However, the templates still have the Fomantic-style HTML layout:
+
+```html
+<div class="ui checkbox">
+  <input type="checkbox">
+  <label>...</label>
+</div>
+```
+
+We call `initAriaCheckboxPatch` to link the `input` and `label` which makes clicking the
+label etc. work. There is still a problem: These checkboxes are not friendly to screen readers,
+so we add IDs to all the Fomantic UI checkboxes automatically by JS. If the `label` part is empty,
+then the checkbox needs to get the `aria-label` attribute manually.
+
+# Fomantic Dropdown
+
+Fomantic Dropdown is designed to be used for many purposes:
+
+* Menu (the profile menu in navbar, the language menu in footer)
+* Popup (the branch/tag panel, the review box)
+* Simple `<select>` , used in many forms
+* Searchable option-list with static items (used in many forms)
+* Searchable option-list with dynamic items (ajax)
+* Searchable multiple selection option-list with dynamic items: the repo topic setting
+* More complex usages, like the Issue Label selector
+
+Fomantic Dropdown requires that the focus must be on its primary element.
+If the focus changes, it hides or panics.
+
+At the moment, the aria-related code only tries to partially resolve the a11y problems for dropdowns with items.
+
+There are different solutions:
+
+* combobox + listbox + option:
+  * https://www.w3.org/WAI/ARIA/apg/patterns/combobox/
+  * A combobox is an input widget with an associated popup that enables users to select a value for the combobox from
+    a collection of possible values. In some implementations, the popup presents allowed values, while in other implementations,
+    the popup presents suggested values, and users may either select one of the suggestions or type a value.
+* menu + menuitem:
+  * https://www.w3.org/WAI/ARIA/apg/patterns/menubar/
+  * A menu is a widget that offers a list of choices to the user, such as a set of actions or functions.
+
+The current approach is: detect if the dropdown has an input,
+if yes, it works like a combobox, otherwise it works like a menu.
+Multiple selection dropdown is not well-supported yet, it needs more work.
+
+Some important pages for dropdown testing:
+
+* Home(dashboard) page, the "Create Repo" / "Profile" / "Language" menu.
+* Create New Repo page, a lot of dropdowns as combobox.
+* Collaborators page, the "permission" dropdown (the old behavior was not quite good, it just works).
+
+```html
+<!-- read-only dropdown -->
+<div class="ui dropdown"> <!-- focused here, then it's not perfect to use aria-activedescendant to point to the menu item -->
+  <input type="hidden" ...>
+  <div class="text">Default</div>
+  <div class="menu" tabindex="-1"> <!-- "transition hidden|visible" classes will be added by $.dropdown() and when the dropdown is working -->
+    <div class="item active selected">Default</div>
+    <div class="item">...</div>
+  </div>
+</div>
+
+<!-- search input dropdown -->
+<div class="ui dropdown">
+  <input type="hidden" ...>
+  <input class="search" autocomplete="off" tabindex="0"> <!-- focused here -->
+  <div class="text"></div>
+  <div class="menu" tabindex="-1"> <!-- "transition hidden|visible" classes will be added by $.dropdown() and when the dropdown is working -->
+    <div class="item selected">...</div>
+    <div class="item">...</div>
+  </div>
+</div>
+```
diff --git a/web_src/js/modules/fomantic/base.js b/web_src/js/modules/fomantic/base.js
new file mode 100644
index 00000000..7574fdd2
--- /dev/null
+++ b/web_src/js/modules/fomantic/base.js
@@ -0,0 +1,18 @@
+let ariaIdCounter = 0;
+
+export function generateAriaId() {
+  return `_aria_auto_id_${ariaIdCounter++}`;
+}
+
+export function linkLabelAndInput(label, input) {
+  const labelFor = label.getAttribute('for');
+  const inputId = input.getAttribute('id');
+
+  if (inputId && !labelFor) { // missing "for"
+    label.setAttribute('for', inputId);
+  } else if (!inputId && !labelFor) { // missing both "id" and "for"
+    const id = generateAriaId();
+    input.setAttribute('id', id);
+    label.setAttribute('for', id);
+  }
+}
diff --git a/web_src/js/modules/fomantic/checkbox.js b/web_src/js/modules/fomantic/checkbox.js
new file mode 100644
index 00000000..ed77406c
--- /dev/null
+++ b/web_src/js/modules/fomantic/checkbox.js
@@ -0,0 +1,13 @@
+import {linkLabelAndInput} from './base.js';
+
+export function initAriaCheckboxPatch() {
+  // link the label and the input element so it's clickable and accessible
+  for (const el of document.querySelectorAll('.ui.checkbox')) {
+    if (el.hasAttribute('data-checkbox-patched')) continue;
+    const label = el.querySelector('label');
+    const input = el.querySelector('input');
+    if (!label || !input) continue;
+    linkLabelAndInput(label, input);
+    el.setAttribute('data-checkbox-patched', 'true');
+  }
+}
diff --git a/web_src/js/modules/fomantic/dropdown.js b/web_src/js/modules/fomantic/dropdown.js
new file mode 100644
index 00000000..82e71086
--- /dev/null
+++ b/web_src/js/modules/fomantic/dropdown.js
@@ -0,0 +1,256 @@
+import $ from 'jquery';
+import {generateAriaId} from './base.js';
+
+const ariaPatchKey = '_giteaAriaPatchDropdown';
+const fomanticDropdownFn = $.fn.dropdown;
+
+// use our own `$().dropdown` function to patch Fomantic's dropdown module
+export function initAriaDropdownPatch() {
+  if ($.fn.dropdown === ariaDropdownFn) throw new Error('initAriaDropdownPatch could only be called once');
+  $.fn.dropdown = ariaDropdownFn;
+  ariaDropdownFn.settings = fomanticDropdownFn.settings;
+}
+
+// the patched `$.fn.dropdown` function, it passes the arguments to Fomantic's `$.fn.dropdown` function, and:
+// * it does the one-time attaching on the first call
+// * it delegates the `onLabelCreate` to the patched `onLabelCreate` to add necessary aria attributes
+function ariaDropdownFn(...args) {
+  const ret = fomanticDropdownFn.apply(this, args);
+
+  // if the `$().dropdown()` call is without arguments, or it has non-string (object) argument,
+  // it means that this call will reset the dropdown internal settings, then we need to re-delegate the callbacks.
+  const needDelegate = (!args.length || typeof args[0] !== 'string');
+  for (const el of this) {
+    if (!el[ariaPatchKey]) {
+      attachInit(el);
+    }
+    if (needDelegate) {
+      delegateOne($(el));
+    }
+  }
+  return ret;
+}
+
+// make the item has role=option/menuitem, add an id if there wasn't one yet, make items as non-focusable
+// the elements inside the dropdown menu item should not be focusable, the focus should always be on the dropdown primary element.
+function updateMenuItem(dropdown, item) {
+  if (!item.id) item.id = generateAriaId();
+  item.setAttribute('role', dropdown[ariaPatchKey].listItemRole);
+  item.setAttribute('tabindex', '-1');
+  for (const el of item.querySelectorAll('a, input, button')) el.setAttribute('tabindex', '-1');
+}
+/**
+ * make the label item and its "delete icon" have correct aria attributes
+ * @param {HTMLElement} label
+ */
+function updateSelectionLabel(label) {
+  // the "label" is like this: "<a|div class="ui label" data-value="1">the-label-name <i|svg class="delete icon"/></a>"
+  if (!label.id) {
+    label.id = generateAriaId();
+  }
+  label.tabIndex = -1;
+
+  const deleteIcon = label.querySelector('.delete.icon');
+  if (deleteIcon) {
+    deleteIcon.setAttribute('aria-hidden', 'false');
+    deleteIcon.setAttribute('aria-label', window.config.i18n.remove_label_str.replace('%s', label.getAttribute('data-value')));
+    deleteIcon.setAttribute('role', 'button');
+  }
+}
+
+// delegate the dropdown's template functions and callback functions to add aria attributes.
+function delegateOne($dropdown) {
+  const dropdownCall = fomanticDropdownFn.bind($dropdown);
+
+  // If there is a "search input" in the "menu", Fomantic will only "focus the input" but not "toggle the menu" when the "dropdown icon" is clicked.
+  // Actually, Fomantic UI doesn't support such layout/usage. It needs to patch the "focusSearch" / "blurSearch" functions to make sure it toggles the menu.
+  const oldFocusSearch = dropdownCall('internal', 'focusSearch');
+  const oldBlurSearch = dropdownCall('internal', 'blurSearch');
+  // * If the "dropdown icon" is clicked, Fomantic calls "focusSearch", so show the menu
+  dropdownCall('internal', 'focusSearch', function () { dropdownCall('show'); oldFocusSearch.call(this) });
+  // * If the "dropdown icon" is clicked again when the menu is visible, Fomantic calls "blurSearch", so hide the menu
+  dropdownCall('internal', 'blurSearch', function () { oldBlurSearch.call(this); dropdownCall('hide') });
+
+  // the "template" functions are used for dynamic creation (eg: AJAX)
+  const dropdownTemplates = {...dropdownCall('setting', 'templates'), t: performance.now()};
+  const dropdownTemplatesMenuOld = dropdownTemplates.menu;
+  dropdownTemplates.menu = function(response, fields, preserveHTML, className) {
+    // when the dropdown menu items are loaded from AJAX requests, the items are created dynamically
+    const menuItems = dropdownTemplatesMenuOld(response, fields, preserveHTML, className);
+    const div = document.createElement('div');
+    div.innerHTML = menuItems;
+    const $wrapper = $(div);
+    const $items = $wrapper.find('> .item');
+    $items.each((_, item) => updateMenuItem($dropdown[0], item));
+    $dropdown[0][ariaPatchKey].deferredRefreshAriaActiveItem();
+    return $wrapper.html();
+  };
+  dropdownCall('setting', 'templates', dropdownTemplates);
+
+  // the `onLabelCreate` is used to add necessary aria attributes for dynamically created selection labels
+  const dropdownOnLabelCreateOld = dropdownCall('setting', 'onLabelCreate');
+  dropdownCall('setting', 'onLabelCreate', function(value, text) {
+    const $label = dropdownOnLabelCreateOld.call(this, value, text);
+    updateSelectionLabel($label[0]);
+    return $label;
+  });
+}
+
+// for static dropdown elements (generated by server-side template), prepare them with necessary aria attributes
+function attachStaticElements(dropdown, focusable, menu) {
+  // prepare static dropdown menu list popup
+  if (!menu.id) {
+    menu.id = generateAriaId();
+  }
+
+  $(menu).find('> .item').each((_, item) => updateMenuItem(dropdown, item));
+
+  // this role could only be changed after its content is ready, otherwise some browsers+readers (like Chrome+AppleVoice) crash
+  menu.setAttribute('role', dropdown[ariaPatchKey].listPopupRole);
+
+  // prepare selection label items
+  for (const label of dropdown.querySelectorAll('.ui.label')) {
+    updateSelectionLabel(label);
+  }
+
+  // make the primary element (focusable) aria-friendly
+  focusable.setAttribute('role', focusable.getAttribute('role') ?? dropdown[ariaPatchKey].focusableRole);
+  focusable.setAttribute('aria-haspopup', dropdown[ariaPatchKey].listPopupRole);
+  focusable.setAttribute('aria-controls', menu.id);
+  focusable.setAttribute('aria-expanded', 'false');
+
+  // use tooltip's content as aria-label if there is no aria-label
+  const tooltipContent = dropdown.getAttribute('data-tooltip-content');
+  if (tooltipContent && !dropdown.getAttribute('aria-label')) {
+    dropdown.setAttribute('aria-label', tooltipContent);
+  }
+}
+
+function attachInit(dropdown) {
+  dropdown[ariaPatchKey] = {};
+  if (dropdown.classList.contains('custom')) return;
+
+  // Dropdown has 2 different focusing behaviors
+  // * with search input: the input is focused, and it works with aria-activedescendant pointing another sibling element.
+  // * without search input (but the readonly text), the dropdown itself is focused. then the aria-activedescendant points to the element inside dropdown
+  // Some desktop screen readers may change the focus, but dropdown requires that the focus must be on its primary element, then they don't work well.
+
+  // Expected user interactions for dropdown with aria support:
+  // * user can use Tab to focus in the dropdown, then the dropdown menu (list) will be shown
+  // * user presses Tab on the focused dropdown to move focus to next sibling focusable element (but not the menu item)
+  // * user can use arrow key Up/Down to navigate between menu items
+  // * when user presses Enter:
+  //    - if the menu item is clickable (eg: <a>), then trigger the click event
+  //    - otherwise, the dropdown control (low-level code) handles the Enter event, hides the dropdown menu
+
+  // TODO: multiple selection is only partially supported. Check and test them one by one in the future.
+
+  const textSearch = dropdown.querySelector('input.search');
+  const focusable = textSearch || dropdown; // the primary element for focus, see comment above
+  if (!focusable) return;
+
+  // as a combobox, the input should not have autocomplete by default
+  if (textSearch && !textSearch.getAttribute('autocomplete')) {
+    textSearch.setAttribute('autocomplete', 'off');
+  }
+
+  let menu = $(dropdown).find('> .menu')[0];
+  if (!menu) {
+    // some "multiple selection" dropdowns don't have a static menu element in HTML, we need to pre-create it to make it have correct aria attributes
+    menu = document.createElement('div');
+    menu.classList.add('menu');
+    dropdown.append(menu);
+  }
+
+  // There are 2 possible solutions about the role: combobox or menu.
+  // The idea is that if there is an input, then it's a combobox, otherwise it's a menu.
+  // Since #19861 we have prepared the "combobox" solution, but didn't get enough time to put it into practice and test before.
+  const isComboBox = dropdown.querySelectorAll('input').length > 0;
+
+  dropdown[ariaPatchKey].focusableRole = isComboBox ? 'combobox' : 'menu';
+  dropdown[ariaPatchKey].listPopupRole = isComboBox ? 'listbox' : '';
+  dropdown[ariaPatchKey].listItemRole = isComboBox ? 'option' : 'menuitem';
+
+  attachDomEvents(dropdown, focusable, menu);
+  attachStaticElements(dropdown, focusable, menu);
+}
+
+function attachDomEvents(dropdown, focusable, menu) {
+  // when showing, it has class: ".animating.in"
+  // when hiding, it has class: ".visible.animating.out"
+  const isMenuVisible = () => (menu.classList.contains('visible') && !menu.classList.contains('out')) || menu.classList.contains('in');
+
+  // update aria attributes according to current active/selected item
+  const refreshAriaActiveItem = () => {
+    const menuVisible = isMenuVisible();
+    focusable.setAttribute('aria-expanded', menuVisible ? 'true' : 'false');
+
+    // if there is an active item, use it (the user is navigating between items)
+    // otherwise use the "selected" for combobox (for the last selected item)
+    const active = $(menu).find('> .item.active, > .item.selected')[0];
+    if (!active) return;
+    // if the popup is visible and has an active/selected item, use its id as aria-activedescendant
+    if (menuVisible) {
+      focusable.setAttribute('aria-activedescendant', active.id);
+    } else if (dropdown[ariaPatchKey].listPopupRole === 'menu') {
+      // for menu, when the popup is hidden, no need to keep the aria-activedescendant, and clear the active/selected item
+      focusable.removeAttribute('aria-activedescendant');
+      active.classList.remove('active', 'selected');
+    }
+  };
+
+  dropdown.addEventListener('keydown', (e) => {
+    // here it must use keydown event before dropdown's keyup handler, otherwise there is no Enter event in our keyup handler
+    if (e.key === 'Enter') {
+      const dropdownCall = fomanticDropdownFn.bind($(dropdown));
+      let $item = dropdownCall('get item', dropdownCall('get value'));
+      if (!$item) $item = $(menu).find('> .item.selected'); // when dropdown filters items by input, there is no "value", so query the "selected" item
+      // if the selected item is clickable, then trigger the click event.
+      // we can not click any item without check, because Fomantic code might also handle the Enter event. that would result in double click.
+      if ($item?.[0]?.matches('a, .js-aria-clickable')) $item[0].click();
+    }
+  });
+
+  // use setTimeout to run the refreshAria in next tick (to make sure the Fomantic UI code has finished its work)
+  // do not return any value, jQuery has return-value related behaviors.
+  // when the popup is hiding, it's better to have a small "delay", because there is a Fomantic UI animation
+  // without the delay for hiding, the UI will be somewhat laggy and sometimes may get stuck in the animation.
+  const deferredRefreshAriaActiveItem = (delay = 0) => { setTimeout(refreshAriaActiveItem, delay) };
+  dropdown[ariaPatchKey].deferredRefreshAriaActiveItem = deferredRefreshAriaActiveItem;
+  dropdown.addEventListener('keyup', (e) => { if (e.key.startsWith('Arrow')) deferredRefreshAriaActiveItem(); });
+
+  // if the dropdown has been opened by focus, do not trigger the next click event again.
+  // otherwise the dropdown will be closed immediately, especially on Android with TalkBack
+  // * desktop event sequence: mousedown -> focus -> mouseup -> click
+  // * mobile event sequence: focus -> mousedown -> mouseup -> click
+  // Fomantic may stop propagation of blur event, use capture to make sure we can still get the event
+  let ignoreClickPreEvents = 0, ignoreClickPreVisible = 0;
+  dropdown.addEventListener('mousedown', () => {
+    ignoreClickPreVisible += isMenuVisible() ? 1 : 0;
+    ignoreClickPreEvents++;
+  }, true);
+  dropdown.addEventListener('focus', () => {
+    ignoreClickPreVisible += isMenuVisible() ? 1 : 0;
+    ignoreClickPreEvents++;
+    deferredRefreshAriaActiveItem();
+  }, true);
+  dropdown.addEventListener('blur', () => {
+    ignoreClickPreVisible = ignoreClickPreEvents = 0;
+    deferredRefreshAriaActiveItem(100);
+  }, true);
+  dropdown.addEventListener('mouseup', () => {
+    setTimeout(() => {
+      ignoreClickPreVisible = ignoreClickPreEvents = 0;
+      deferredRefreshAriaActiveItem(100);
+    }, 0);
+  }, true);
+  dropdown.addEventListener('click', (e) => {
+    if (isMenuVisible() &&
+      ignoreClickPreVisible !== 2 && // dropdown is switch from invisible to visible
+      ignoreClickPreEvents === 2 // the click event is related to mousedown+focus
+    ) {
+      e.stopPropagation(); // if the dropdown menu has been opened by focus, do not trigger the next click event again
+    }
+    ignoreClickPreEvents = ignoreClickPreVisible = 0;
+  }, true);
+}
diff --git a/web_src/js/modules/fomantic/form.js b/web_src/js/modules/fomantic/form.js
new file mode 100644
index 00000000..3bb00589
--- /dev/null
+++ b/web_src/js/modules/fomantic/form.js
@@ -0,0 +1,13 @@
+import {linkLabelAndInput} from './base.js';
+
+export function initAriaFormFieldPatch() {
+  // link the label and the input element so it's clickable and accessible
+  for (const el of document.querySelectorAll('.ui.form .field')) {
+    if (el.hasAttribute('data-field-patched')) continue;
+    const label = el.querySelector(':scope > label');
+    const input = el.querySelector(':scope > input');
+    if (!label || !input) continue;
+    linkLabelAndInput(label, input);
+    el.setAttribute('data-field-patched', 'true');
+  }
+}
diff --git a/web_src/js/modules/fomantic/modal.js b/web_src/js/modules/fomantic/modal.js
new file mode 100644
index 00000000..8b455cf4
--- /dev/null
+++ b/web_src/js/modules/fomantic/modal.js
@@ -0,0 +1,28 @@
+import $ from 'jquery';
+
+const fomanticModalFn = $.fn.modal;
+
+// use our own `$.fn.modal` to patch Fomantic's modal module
+export function initAriaModalPatch() {
+  if ($.fn.modal === ariaModalFn) throw new Error('initAriaModalPatch could only be called once');
+  $.fn.modal = ariaModalFn;
+  ariaModalFn.settings = fomanticModalFn.settings;
+}
+
+// the patched `$.fn.modal` modal function
+// * it does the one-time attaching on the first call
+function ariaModalFn(...args) {
+  const ret = fomanticModalFn.apply(this, args);
+  if (args[0] === 'show' || args[0]?.autoShow) {
+    for (const el of this) {
+      // If there is a form in the modal, there might be a "cancel" button before "ok" button (all buttons are "type=submit" by default).
+      // In such case, the "Enter" key will trigger the "cancel" button instead of "ok" button, then the dialog will be closed.
+      // It breaks the user experience - the "Enter" key should confirm the dialog and submit the form.
+      // So, all "cancel" buttons without "[type]" must be marked as "type=button".
+      for (const button of el.querySelectorAll('form button.cancel:not([type])')) {
+        button.setAttribute('type', 'button');
+      }
+    }
+  }
+  return ret;
+}
diff --git a/web_src/js/modules/fomantic/transition.js b/web_src/js/modules/fomantic/transition.js
new file mode 100644
index 00000000..78aa0538
--- /dev/null
+++ b/web_src/js/modules/fomantic/transition.js
@@ -0,0 +1,54 @@
+import $ from 'jquery';
+
+export function initFomanticTransition() {
+  const transitionNopBehaviors = new Set([
+    'clear queue', 'stop', 'stop all', 'destroy',
+    'force repaint', 'repaint', 'reset',
+    'looping', 'remove looping', 'disable', 'enable',
+    'set duration', 'save conditions', 'restore conditions',
+  ]);
+  // stand-in for removed transition module
+  $.fn.transition = function (arg0, arg1, arg2) {
+    if (arg0 === 'is supported') return true;
+    if (arg0 === 'is animating') return false;
+    if (arg0 === 'is inward') return false;
+    if (arg0 === 'is outward') return false;
+
+    let argObj;
+    if (typeof arg0 === 'string') {
+      // many behaviors are no-op now. https://fomantic-ui.com/modules/transition.html#/usage
+      if (transitionNopBehaviors.has(arg0)) return this;
+      // now, the arg0 is an animation name, the syntax: (animation, duration, complete)
+      argObj = {animation: arg0, ...(arg1 && {duration: arg1}), ...(arg2 && {onComplete: arg2})};
+    } else if (typeof arg0 === 'object') {
+      argObj = arg0;
+    } else {
+      throw new Error(`invalid argument: ${arg0}`);
+    }
+
+    const isAnimationIn = argObj.animation?.startsWith('show') || argObj.animation?.endsWith(' in');
+    const isAnimationOut = argObj.animation?.startsWith('hide') || argObj.animation?.endsWith(' out');
+    this.each((_, el) => {
+      let toShow = isAnimationIn;
+      if (!isAnimationIn && !isAnimationOut) {
+        // If the animation is not in/out, then it must be a toggle animation.
+        // Fomantic uses computed styles to check "visibility", but to avoid unnecessary arguments, here it only checks the class.
+        toShow = this.hasClass('hidden'); // maybe it could also check "!this.hasClass('visible')", leave it to the future until there is a real problem.
+      }
+      argObj.onStart?.call(el);
+      if (toShow) {
+        el.classList.remove('hidden');
+        el.classList.add('visible', 'transition');
+        if (argObj.displayType) el.style.setProperty('display', argObj.displayType, 'important');
+        argObj.onShow?.call(el);
+      } else {
+        el.classList.add('hidden');
+        el.classList.remove('visible'); // don't remove the transition class because the Fomantic animation style is `.hidden.transition`.
+        el.style.removeProperty('display');
+        argObj.onHidden?.call(el);
+      }
+      argObj.onComplete?.call(el);
+    });
+    return this;
+  };
+}
diff --git a/web_src/js/modules/sortable.js b/web_src/js/modules/sortable.js
new file mode 100644
index 00000000..1c9adb6d
--- /dev/null
+++ b/web_src/js/modules/sortable.js
@@ -0,0 +1,19 @@
+export async function createSortable(el, opts = {}) {
+  const {Sortable} = await import(/* webpackChunkName: "sortablejs" */'sortablejs');
+
+  return new Sortable(el, {
+    animation: 150,
+    ghostClass: 'card-ghost',
+    onChoose: (e) => {
+      const handle = opts.handle ? e.item.querySelector(opts.handle) : e.item;
+      handle.classList.add('tw-cursor-grabbing');
+      opts.onChoose?.(e);
+    },
+    onUnchoose: (e) => {
+      const handle = opts.handle ? e.item.querySelector(opts.handle) : e.item;
+      handle.classList.remove('tw-cursor-grabbing');
+      opts.onUnchoose?.(e);
+    },
+    ...opts,
+  });
+}
diff --git a/web_src/js/modules/stores.js b/web_src/js/modules/stores.js
new file mode 100644
index 00000000..1a0ed7ed
--- /dev/null
+++ b/web_src/js/modules/stores.js
@@ -0,0 +1,10 @@
+import {reactive} from 'vue';
+
+let diffTreeStoreReactive;
+export function diffTreeStore() {
+  if (!diffTreeStoreReactive) {
+    diffTreeStoreReactive = reactive(window.config.pageData.diffFileInfo);
+    window.config.pageData.diffFileInfo = diffTreeStoreReactive;
+  }
+  return diffTreeStoreReactive;
+}
diff --git a/web_src/js/modules/tippy.js b/web_src/js/modules/tippy.js
new file mode 100644
index 00000000..83b28e57
--- /dev/null
+++ b/web_src/js/modules/tippy.js
@@ -0,0 +1,195 @@
+import tippy, {followCursor} from 'tippy.js';
+import {isDocumentFragmentOrElementNode} from '../utils/dom.js';
+import {formatDatetime} from '../utils/time.js';
+
+const visibleInstances = new Set();
+const arrowSvg = `<svg width="16" height="7"><path d="m0 7 8-7 8 7Z" class="tippy-svg-arrow-outer"/><path d="m0 8 8-7 8 7Z" class="tippy-svg-arrow-inner"/></svg>`;
+
+export function createTippy(target, opts = {}) {
+  // the callback functions should be destructured from opts,
+  // because we should use our own wrapper functions to handle them, do not let the user override them
+  const {onHide, onShow, onDestroy, role, theme, arrow, ...other} = opts;
+
+  const instance = tippy(target, {
+    appendTo: document.body,
+    animation: false,
+    allowHTML: false,
+    hideOnClick: false,
+    interactiveBorder: 20,
+    ignoreAttributes: true,
+    maxWidth: 500, // increase over default 350px
+    onHide: (instance) => {
+      visibleInstances.delete(instance);
+      return onHide?.(instance);
+    },
+    onDestroy: (instance) => {
+      visibleInstances.delete(instance);
+      return onDestroy?.(instance);
+    },
+    onShow: (instance) => {
+      // hide other tooltip instances so only one tooltip shows at a time
+      for (const visibleInstance of visibleInstances) {
+        if (visibleInstance.props.role === 'tooltip') {
+          visibleInstance.hide();
+        }
+      }
+      visibleInstances.add(instance);
+      return onShow?.(instance);
+    },
+    arrow: arrow || (theme === 'bare' ? false : arrowSvg),
+    role: role || 'menu', // HTML role attribute
+    theme: theme || role || 'menu', // CSS theme, either "tooltip", "menu", "box-with-header" or "bare"
+    plugins: [followCursor],
+    ...other,
+  });
+
+  if (role === 'menu') {
+    target.setAttribute('aria-haspopup', 'true');
+  }
+
+  return instance;
+}
+
+/**
+ * Attach a tooltip tippy to the given target element.
+ * If the target element already has a tooltip tippy attached, the tooltip will be updated with the new content.
+ * If the target element has no content, then no tooltip will be attached, and it returns null.
+ *
+ * Note: "tooltip" doesn't equal to "tippy". "tooltip" means a auto-popup content, it just uses tippy as the implementation.
+ *
+ * @param target {HTMLElement}
+ * @param content {null|string}
+ * @returns {null|tippy}
+ */
+function attachTooltip(target, content = null) {
+  switchTitleToTooltip(target);
+
+  content = content ?? target.getAttribute('data-tooltip-content');
+  if (!content) return null;
+
+  // when element has a clipboard target, we update the tooltip after copy
+  // in which case it is undesirable to automatically hide it on click as
+  // it would momentarily flash the tooltip out and in.
+  const hasClipboardTarget = target.hasAttribute('data-clipboard-target');
+  const hideOnClick = !hasClipboardTarget;
+
+  const props = {
+    content,
+    delay: 100,
+    role: 'tooltip',
+    theme: 'tooltip',
+    hideOnClick,
+    placement: target.getAttribute('data-tooltip-placement') || 'top-start',
+    followCursor: target.getAttribute('data-tooltip-follow-cursor') || false,
+    ...(target.getAttribute('data-tooltip-interactive') === 'true' ? {interactive: true, aria: {content: 'describedby', expanded: false}} : {}),
+  };
+
+  if (!target._tippy) {
+    createTippy(target, props);
+  } else {
+    target._tippy.setProps(props);
+  }
+  return target._tippy;
+}
+
+function switchTitleToTooltip(target) {
+  let title = target.getAttribute('title');
+  if (title) {
+    // apply custom formatting to relative-time's tooltips
+    if (target.tagName.toLowerCase() === 'relative-time') {
+      const datetime = target.getAttribute('datetime');
+      if (datetime) {
+        title = formatDatetime(new Date(datetime));
+      }
+    }
+    target.setAttribute('data-tooltip-content', title);
+    target.setAttribute('aria-label', title);
+    // keep the attribute, in case there are some other "[title]" selectors
+    // and to prevent infinite loop with <relative-time> which will re-add
+    // title if it is absent
+    target.setAttribute('title', '');
+  }
+}
+
+/**
+ * Creating tooltip tippy instance is expensive, so we only create it when the user hovers over the element
+ * According to https://www.w3.org/TR/DOM-Level-3-Events/#events-mouseevent-event-order , mouseover event is fired before mouseenter event
+ * Some browsers like PaleMoon don't support "addEventListener('mouseenter', capture)"
+ * The tippy by default uses "mouseenter" event to show, so we use "mouseover" event to switch to tippy
+ * @param e {Event}
+ */
+function lazyTooltipOnMouseHover(e) {
+  e.target.removeEventListener('mouseover', lazyTooltipOnMouseHover, true);
+  attachTooltip(this);
+}
+
+// Activate the tooltip for current element.
+// If the element has no aria-label, use the tooltip content as aria-label.
+function attachLazyTooltip(el) {
+  el.addEventListener('mouseover', lazyTooltipOnMouseHover, {capture: true});
+
+  // meanwhile, if the element has no aria-label, use the tooltip content as aria-label
+  if (!el.hasAttribute('aria-label')) {
+    const content = el.getAttribute('data-tooltip-content');
+    if (content) {
+      el.setAttribute('aria-label', content);
+    }
+  }
+}
+
+// Activate the tooltip for all children elements.
+function attachChildrenLazyTooltip(target) {
+  for (const el of target.querySelectorAll('[data-tooltip-content]')) {
+    attachLazyTooltip(el);
+  }
+}
+
+export function initGlobalTooltips() {
+  // use MutationObserver to detect new "data-tooltip-content" elements added to the DOM, or attributes changed
+  const observerConnect = (observer) => observer.observe(document, {
+    subtree: true,
+    childList: true,
+    attributeFilter: ['data-tooltip-content', 'title'],
+  });
+  const observer = new MutationObserver((mutationList, observer) => {
+    const pending = observer.takeRecords();
+    observer.disconnect();
+    for (const mutation of [...mutationList, ...pending]) {
+      if (mutation.type === 'childList') {
+        // mainly for Vue components and AJAX rendered elements
+        for (const el of mutation.addedNodes) {
+          if (!isDocumentFragmentOrElementNode(el)) continue;
+          attachChildrenLazyTooltip(el);
+          if (el.hasAttribute('data-tooltip-content')) {
+            attachLazyTooltip(el);
+          }
+        }
+      } else if (mutation.type === 'attributes') {
+        attachTooltip(mutation.target);
+      }
+    }
+    observerConnect(observer);
+  });
+  observerConnect(observer);
+
+  attachChildrenLazyTooltip(document.documentElement);
+}
+
+export function showTemporaryTooltip(target, content) {
+  // if the target is inside a dropdown, don't show the tooltip because when the dropdown
+  // closes, the tippy would be pushed unsightly to the top-left of the screen like seen
+  // on the issue comment menu.
+  if (target.closest('.ui.dropdown > .menu')) return;
+
+  const tippy = target._tippy ?? attachTooltip(target, content);
+  tippy.setContent(content);
+  if (!tippy.state.isShown) tippy.show();
+  tippy.setProps({
+    onHidden: (tippy) => {
+      // reset the default tooltip content, if no default, then this temporary tooltip could be destroyed
+      if (!attachTooltip(target)) {
+        tippy.destroy();
+      }
+    },
+  });
+}
diff --git a/web_src/js/modules/toast.js b/web_src/js/modules/toast.js
new file mode 100644
index 00000000..d12d2037
--- /dev/null
+++ b/web_src/js/modules/toast.js
@@ -0,0 +1,55 @@
+import {htmlEscape} from 'escape-goat';
+import {svg} from '../svg.js';
+import Toastify from 'toastify-js'; // don't use "async import", because when network error occurs, the "async import" also fails and nothing is shown
+
+const levels = {
+  info: {
+    icon: 'octicon-check',
+    background: 'var(--color-green)',
+    duration: 2500,
+  },
+  warning: {
+    icon: 'gitea-exclamation',
+    background: 'var(--color-orange)',
+    duration: -1, // requires dismissal to hide
+  },
+  error: {
+    icon: 'gitea-exclamation',
+    background: 'var(--color-red)',
+    duration: -1, // requires dismissal to hide
+  },
+};
+
+// See https://github.com/apvarun/toastify-js#api for options
+function showToast(message, level, {gravity, position, duration, useHtmlBody, ...other} = {}) {
+  const {icon, background, duration: levelDuration} = levels[level ?? 'info'];
+  const toast = Toastify({
+    text: `
+      <div class='toast-icon'>${svg(icon)}</div>
+      <div class='toast-body'>${useHtmlBody ? message : htmlEscape(message)}</div>
+      <button class='toast-close'>${svg('octicon-x')}</button>
+    `,
+    escapeMarkup: false,
+    gravity: gravity ?? 'top',
+    position: position ?? 'center',
+    duration: duration ?? levelDuration,
+    style: {background},
+    ...other,
+  });
+
+  toast.showToast();
+  toast.toastElement.querySelector('.toast-close').addEventListener('click', () => toast.hideToast());
+  return toast;
+}
+
+export function showInfoToast(message, opts) {
+  return showToast(message, 'info', opts);
+}
+
+export function showWarningToast(message, opts) {
+  return showToast(message, 'warning', opts);
+}
+
+export function showErrorToast(message, opts) {
+  return showToast(message, 'error', opts);
+}
diff --git a/web_src/js/modules/toast.test.js b/web_src/js/modules/toast.test.js
new file mode 100644
index 00000000..357f18db
--- /dev/null
+++ b/web_src/js/modules/toast.test.js
@@ -0,0 +1,16 @@
+import {showInfoToast, showErrorToast, showWarningToast} from './toast.js';
+
+test('showInfoToast', async () => {
+  showInfoToast('success 😀', {duration: -1});
+  expect(document.querySelector('.toastify')).toBeTruthy();
+});
+
+test('showWarningToast', async () => {
+  showWarningToast('warning 😐', {duration: -1});
+  expect(document.querySelector('.toastify')).toBeTruthy();
+});
+
+test('showErrorToast', async () => {
+  showErrorToast('error 🙁', {duration: -1});
+  expect(document.querySelector('.toastify')).toBeTruthy();
+});
diff --git a/web_src/js/render/ansi.js b/web_src/js/render/ansi.js
new file mode 100644
index 00000000..bb622dd1
--- /dev/null
+++ b/web_src/js/render/ansi.js
@@ -0,0 +1,45 @@
+import {AnsiUp} from 'ansi_up';
+
+const replacements = [
+  [/\x1b\[\d+[A-H]/g, ''], // Move cursor, treat them as no-op
+  [/\x1b\[\d?[JK]/g, '\r'], // Erase display/line, treat them as a Carriage Return
+];
+
+// render ANSI to HTML
+export function renderAnsi(line) {
+  // create a fresh ansi_up instance because otherwise previous renders can influence
+  // the output of future renders, because ansi_up is stateful and remembers things like
+  // unclosed opening tags for colors.
+  const ansi_up = new AnsiUp();
+  ansi_up.use_classes = true;
+
+  if (line.endsWith('\r\n')) {
+    line = line.substring(0, line.length - 2);
+  } else if (line.endsWith('\n')) {
+    line = line.substring(0, line.length - 1);
+  }
+
+  if (line.includes('\x1b')) {
+    for (const [regex, replacement] of replacements) {
+      line = line.replace(regex, replacement);
+    }
+  }
+
+  if (!line.includes('\r')) {
+    return ansi_up.ansi_to_html(line);
+  }
+
+  // handle "\rReading...1%\rReading...5%\rReading...100%",
+  // convert it into a multiple-line string: "Reading...1%\nReading...5%\nReading...100%"
+  const lines = [];
+  for (const part of line.split('\r')) {
+    if (part === '') continue;
+    const partHtml = ansi_up.ansi_to_html(part);
+    if (partHtml !== '') {
+      lines.push(partHtml);
+    }
+  }
+
+  // the log message element is with "white-space: break-spaces;", so use "\n" to break lines
+  return lines.join('\n');
+}
diff --git a/web_src/js/render/ansi.test.js b/web_src/js/render/ansi.test.js
new file mode 100644
index 00000000..5afff71c
--- /dev/null
+++ b/web_src/js/render/ansi.test.js
@@ -0,0 +1,20 @@
+import {renderAnsi} from './ansi.js';
+
+test('renderAnsi', () => {
+  expect(renderAnsi('abc')).toEqual('abc');
+  expect(renderAnsi('abc\n')).toEqual('abc');
+  expect(renderAnsi('abc\r\n')).toEqual('abc');
+  expect(renderAnsi('\r')).toEqual('');
+  expect(renderAnsi('\rx\rabc')).toEqual('x\nabc');
+  expect(renderAnsi('\rabc\rx\r')).toEqual('abc\nx');
+  expect(renderAnsi('\x1b[30mblack\x1b[37mwhite')).toEqual('<span class="ansi-black-fg">black</span><span class="ansi-white-fg">white</span>'); // unclosed
+  expect(renderAnsi('<script>')).toEqual('&lt;script&gt;');
+  expect(renderAnsi('\x1b[1A\x1b[2Ktest\x1b[1B\x1b[1A\x1b[2K')).toEqual('test');
+  expect(renderAnsi('\x1b[1A\x1b[2K\rtest\r\x1b[1B\x1b[1A\x1b[2K')).toEqual('test');
+  expect(renderAnsi('\x1b[1A\x1b[2Ktest\x1b[1B\x1b[1A\x1b[2K')).toEqual('test');
+  expect(renderAnsi('\x1b[1A\x1b[2K\rtest\r\x1b[1B\x1b[1A\x1b[2K')).toEqual('test');
+
+  // treat "\033[0K" and "\033[0J" (Erase display/line) as "\r", then it will be covered to "\n" finally.
+  expect(renderAnsi('a\x1b[Kb\x1b[2Jc')).toEqual('a\nb\nc');
+  expect(renderAnsi('\x1b[48;5;88ma\x1b[38;208;48;5;159mb\x1b[m')).toEqual(`<span style="background-color:rgb(135,0,0)">a</span><span style="background-color:rgb(175,255,255)">b</span>`);
+});
diff --git a/web_src/js/render/pdf.js b/web_src/js/render/pdf.js
new file mode 100644
index 00000000..f31f161e
--- /dev/null
+++ b/web_src/js/render/pdf.js
@@ -0,0 +1,19 @@
+import {htmlEscape} from 'escape-goat';
+
+export async function initPdfViewer() {
+  const els = document.querySelectorAll('.pdf-content');
+  if (!els.length) return;
+
+  const pdfobject = await import(/* webpackChunkName: "pdfobject" */'pdfobject');
+
+  for (const el of els) {
+    const src = el.getAttribute('data-src');
+    const fallbackText = el.getAttribute('data-fallback-button-text');
+    pdfobject.embed(src, el, {
+      fallbackLink: htmlEscape`
+        <a role="button" class="ui basic button pdf-fallback-button" href="[url]">${fallbackText}</a>
+      `,
+    });
+    el.classList.remove('is-loading');
+  }
+}
diff --git a/web_src/js/standalone/devtest.js b/web_src/js/standalone/devtest.js
new file mode 100644
index 00000000..d0ca511c
--- /dev/null
+++ b/web_src/js/standalone/devtest.js
@@ -0,0 +1,11 @@
+import {showInfoToast, showWarningToast, showErrorToast} from '../modules/toast.js';
+
+document.getElementById('info-toast').addEventListener('click', () => {
+  showInfoToast('success 😀');
+});
+document.getElementById('warning-toast').addEventListener('click', () => {
+  showWarningToast('warning 😐');
+});
+document.getElementById('error-toast').addEventListener('click', () => {
+  showErrorToast('error 🙁');
+});
diff --git a/web_src/js/standalone/forgejo-swagger.js b/web_src/js/standalone/forgejo-swagger.js
new file mode 100644
index 00000000..896a1364
--- /dev/null
+++ b/web_src/js/standalone/forgejo-swagger.js
@@ -0,0 +1,22 @@
+import SwaggerUI from 'swagger-ui-dist/swagger-ui-es-bundle.js';
+import 'swagger-ui-dist/swagger-ui.css';
+
+window.addEventListener('load', async () => {
+  const url = document.getElementById('swagger-ui').getAttribute('data-source');
+
+  const ui = SwaggerUI({
+    url,
+    dom_id: '#swagger-ui',
+    deepLinking: true,
+    docExpansion: 'none',
+    defaultModelRendering: 'model', // don't show examples by default, because they may be incomplete
+    presets: [
+      SwaggerUI.presets.apis,
+    ],
+    plugins: [
+      SwaggerUI.plugins.DownloadUrl,
+    ],
+  });
+
+  window.ui = ui;
+});
diff --git a/web_src/js/standalone/swagger.js b/web_src/js/standalone/swagger.js
new file mode 100644
index 00000000..00854ef5
--- /dev/null
+++ b/web_src/js/standalone/swagger.js
@@ -0,0 +1,32 @@
+import SwaggerUI from 'swagger-ui-dist/swagger-ui-es-bundle.js';
+import 'swagger-ui-dist/swagger-ui.css';
+
+window.addEventListener('load', async () => {
+  const url = document.getElementById('swagger-ui').getAttribute('data-source');
+  const res = await fetch(url);
+  const spec = await res.json();
+
+  // Make the page's protocol be at the top of the schemes list
+  const proto = window.location.protocol.slice(0, -1);
+  spec.schemes.sort((a, b) => {
+    if (a === proto) return -1;
+    if (b === proto) return 1;
+    return 0;
+  });
+
+  const ui = SwaggerUI({
+    spec,
+    dom_id: '#swagger-ui',
+    deepLinking: true,
+    docExpansion: 'none',
+    defaultModelRendering: 'model', // don't show examples by default, because they may be incomplete
+    presets: [
+      SwaggerUI.presets.apis,
+    ],
+    plugins: [
+      SwaggerUI.plugins.DownloadUrl,
+    ],
+  });
+
+  window.ui = ui;
+});
diff --git a/web_src/js/svg.js b/web_src/js/svg.js
new file mode 100644
index 00000000..913d2677
--- /dev/null
+++ b/web_src/js/svg.js
@@ -0,0 +1,226 @@
+import {h} from 'vue';
+import {parseDom, serializeXml} from './utils.js';
+import giteaDoubleChevronLeft from '../../public/assets/img/svg/gitea-double-chevron-left.svg';
+import giteaDoubleChevronRight from '../../public/assets/img/svg/gitea-double-chevron-right.svg';
+import giteaEmptyCheckbox from '../../public/assets/img/svg/gitea-empty-checkbox.svg';
+import giteaExclamation from '../../public/assets/img/svg/gitea-exclamation.svg';
+import octiconArchive from '../../public/assets/img/svg/octicon-archive.svg';
+import octiconArrowSwitch from '../../public/assets/img/svg/octicon-arrow-switch.svg';
+import octiconBlocked from '../../public/assets/img/svg/octicon-blocked.svg';
+import octiconBold from '../../public/assets/img/svg/octicon-bold.svg';
+import octiconCheck from '../../public/assets/img/svg/octicon-check.svg';
+import octiconCheckbox from '../../public/assets/img/svg/octicon-checkbox.svg';
+import octiconCheckCircleFill from '../../public/assets/img/svg/octicon-check-circle-fill.svg';
+import octiconChevronDown from '../../public/assets/img/svg/octicon-chevron-down.svg';
+import octiconChevronLeft from '../../public/assets/img/svg/octicon-chevron-left.svg';
+import octiconChevronRight from '../../public/assets/img/svg/octicon-chevron-right.svg';
+import octiconClock from '../../public/assets/img/svg/octicon-clock.svg';
+import octiconCode from '../../public/assets/img/svg/octicon-code.svg';
+import octiconColumns from '../../public/assets/img/svg/octicon-columns.svg';
+import octiconCopy from '../../public/assets/img/svg/octicon-copy.svg';
+import octiconDiffAdded from '../../public/assets/img/svg/octicon-diff-added.svg';
+import octiconDiffModified from '../../public/assets/img/svg/octicon-diff-modified.svg';
+import octiconDiffRemoved from '../../public/assets/img/svg/octicon-diff-removed.svg';
+import octiconDiffRenamed from '../../public/assets/img/svg/octicon-diff-renamed.svg';
+import octiconDotFill from '../../public/assets/img/svg/octicon-dot-fill.svg';
+import octiconDownload from '../../public/assets/img/svg/octicon-download.svg';
+import octiconEye from '../../public/assets/img/svg/octicon-eye.svg';
+import octiconFile from '../../public/assets/img/svg/octicon-file.svg';
+import octiconFileDirectoryFill from '../../public/assets/img/svg/octicon-file-directory-fill.svg';
+import octiconFilter from '../../public/assets/img/svg/octicon-filter.svg';
+import octiconGear from '../../public/assets/img/svg/octicon-gear.svg';
+import octiconGitBranch from '../../public/assets/img/svg/octicon-git-branch.svg';
+import octiconGitCommit from '../../public/assets/img/svg/octicon-git-commit.svg';
+import octiconGitMerge from '../../public/assets/img/svg/octicon-git-merge.svg';
+import octiconGitPullRequest from '../../public/assets/img/svg/octicon-git-pull-request.svg';
+import octiconGitPullRequestDraft from '../../public/assets/img/svg/octicon-git-pull-request-draft.svg';
+import octiconHeading from '../../public/assets/img/svg/octicon-heading.svg';
+import octiconHorizontalRule from '../../public/assets/img/svg/octicon-horizontal-rule.svg';
+import octiconImage from '../../public/assets/img/svg/octicon-image.svg';
+import octiconIssueClosed from '../../public/assets/img/svg/octicon-issue-closed.svg';
+import octiconIssueOpened from '../../public/assets/img/svg/octicon-issue-opened.svg';
+import octiconItalic from '../../public/assets/img/svg/octicon-italic.svg';
+import octiconKebabHorizontal from '../../public/assets/img/svg/octicon-kebab-horizontal.svg';
+import octiconLink from '../../public/assets/img/svg/octicon-link.svg';
+import octiconListOrdered from '../../public/assets/img/svg/octicon-list-ordered.svg';
+import octiconListUnordered from '../../public/assets/img/svg/octicon-list-unordered.svg';
+import octiconLock from '../../public/assets/img/svg/octicon-lock.svg';
+import octiconMeter from '../../public/assets/img/svg/octicon-meter.svg';
+import octiconMilestone from '../../public/assets/img/svg/octicon-milestone.svg';
+import octiconMirror from '../../public/assets/img/svg/octicon-mirror.svg';
+import octiconOrganization from '../../public/assets/img/svg/octicon-organization.svg';
+import octiconPlay from '../../public/assets/img/svg/octicon-play.svg';
+import octiconPlus from '../../public/assets/img/svg/octicon-plus.svg';
+import octiconProject from '../../public/assets/img/svg/octicon-project.svg';
+import octiconQuote from '../../public/assets/img/svg/octicon-quote.svg';
+import octiconRepo from '../../public/assets/img/svg/octicon-repo.svg';
+import octiconRepoForked from '../../public/assets/img/svg/octicon-repo-forked.svg';
+import octiconRepoTemplate from '../../public/assets/img/svg/octicon-repo-template.svg';
+import octiconRss from '../../public/assets/img/svg/octicon-rss.svg';
+import octiconScreenFull from '../../public/assets/img/svg/octicon-screen-full.svg';
+import octiconSearch from '../../public/assets/img/svg/octicon-search.svg';
+import octiconSidebarCollapse from '../../public/assets/img/svg/octicon-sidebar-collapse.svg';
+import octiconSidebarExpand from '../../public/assets/img/svg/octicon-sidebar-expand.svg';
+import octiconSkip from '../../public/assets/img/svg/octicon-skip.svg';
+import octiconStar from '../../public/assets/img/svg/octicon-star.svg';
+import octiconStrikethrough from '../../public/assets/img/svg/octicon-strikethrough.svg';
+import octiconSync from '../../public/assets/img/svg/octicon-sync.svg';
+import octiconTable from '../../public/assets/img/svg/octicon-table.svg';
+import octiconTag from '../../public/assets/img/svg/octicon-tag.svg';
+import octiconTrash from '../../public/assets/img/svg/octicon-trash.svg';
+import octiconTriangleDown from '../../public/assets/img/svg/octicon-triangle-down.svg';
+import octiconX from '../../public/assets/img/svg/octicon-x.svg';
+import octiconXCircleFill from '../../public/assets/img/svg/octicon-x-circle-fill.svg';
+
+const svgs = {
+  'gitea-double-chevron-left': giteaDoubleChevronLeft,
+  'gitea-double-chevron-right': giteaDoubleChevronRight,
+  'gitea-empty-checkbox': giteaEmptyCheckbox,
+  'gitea-exclamation': giteaExclamation,
+  'octicon-archive': octiconArchive,
+  'octicon-arrow-switch': octiconArrowSwitch,
+  'octicon-blocked': octiconBlocked,
+  'octicon-bold': octiconBold,
+  'octicon-check': octiconCheck,
+  'octicon-check-circle-fill': octiconCheckCircleFill,
+  'octicon-checkbox': octiconCheckbox,
+  'octicon-chevron-down': octiconChevronDown,
+  'octicon-chevron-left': octiconChevronLeft,
+  'octicon-chevron-right': octiconChevronRight,
+  'octicon-clock': octiconClock,
+  'octicon-code': octiconCode,
+  'octicon-columns': octiconColumns,
+  'octicon-copy': octiconCopy,
+  'octicon-diff-added': octiconDiffAdded,
+  'octicon-diff-modified': octiconDiffModified,
+  'octicon-diff-removed': octiconDiffRemoved,
+  'octicon-diff-renamed': octiconDiffRenamed,
+  'octicon-dot-fill': octiconDotFill,
+  'octicon-download': octiconDownload,
+  'octicon-eye': octiconEye,
+  'octicon-file': octiconFile,
+  'octicon-file-directory-fill': octiconFileDirectoryFill,
+  'octicon-filter': octiconFilter,
+  'octicon-gear': octiconGear,
+  'octicon-git-branch': octiconGitBranch,
+  'octicon-git-commit': octiconGitCommit,
+  'octicon-git-merge': octiconGitMerge,
+  'octicon-git-pull-request': octiconGitPullRequest,
+  'octicon-git-pull-request-draft': octiconGitPullRequestDraft,
+  'octicon-heading': octiconHeading,
+  'octicon-horizontal-rule': octiconHorizontalRule,
+  'octicon-image': octiconImage,
+  'octicon-issue-closed': octiconIssueClosed,
+  'octicon-issue-opened': octiconIssueOpened,
+  'octicon-italic': octiconItalic,
+  'octicon-kebab-horizontal': octiconKebabHorizontal,
+  'octicon-link': octiconLink,
+  'octicon-list-ordered': octiconListOrdered,
+  'octicon-list-unordered': octiconListUnordered,
+  'octicon-lock': octiconLock,
+  'octicon-meter': octiconMeter,
+  'octicon-milestone': octiconMilestone,
+  'octicon-mirror': octiconMirror,
+  'octicon-organization': octiconOrganization,
+  'octicon-play': octiconPlay,
+  'octicon-plus': octiconPlus,
+  'octicon-project': octiconProject,
+  'octicon-quote': octiconQuote,
+  'octicon-repo': octiconRepo,
+  'octicon-repo-forked': octiconRepoForked,
+  'octicon-repo-template': octiconRepoTemplate,
+  'octicon-rss': octiconRss,
+  'octicon-screen-full': octiconScreenFull,
+  'octicon-search': octiconSearch,
+  'octicon-sidebar-collapse': octiconSidebarCollapse,
+  'octicon-sidebar-expand': octiconSidebarExpand,
+  'octicon-skip': octiconSkip,
+  'octicon-star': octiconStar,
+  'octicon-strikethrough': octiconStrikethrough,
+  'octicon-sync': octiconSync,
+  'octicon-table': octiconTable,
+  'octicon-tag': octiconTag,
+  'octicon-trash': octiconTrash,
+  'octicon-triangle-down': octiconTriangleDown,
+  'octicon-x': octiconX,
+  'octicon-x-circle-fill': octiconXCircleFill,
+};
+
+// TODO: use a more general approach to access SVG icons.
+//  At the moment, developers must check, pick and fill the names manually,
+//  most of the SVG icons in assets couldn't be used directly.
+
+// retrieve an HTML string for given SVG icon name, size and additional classes
+export function svg(name, size = 16, className = '') {
+  if (!(name in svgs)) throw new Error(`Unknown SVG icon: ${name}`);
+  if (size === 16 && !className) return svgs[name];
+
+  const document = parseDom(svgs[name], 'image/svg+xml');
+  const svgNode = document.firstChild;
+  if (size !== 16) {
+    svgNode.setAttribute('width', String(size));
+    svgNode.setAttribute('height', String(size));
+  }
+  if (className) svgNode.classList.add(...className.split(/\s+/).filter(Boolean));
+  return serializeXml(svgNode);
+}
+
+export function svgParseOuterInner(name) {
+  const svgStr = svgs[name];
+  if (!svgStr) throw new Error(`Unknown SVG icon: ${name}`);
+
+  // parse the SVG string to 2 parts
+  // * svgInnerHtml: the inner part of the SVG, will be used as the content of the <svg> VNode
+  // * svgOuter: the outer part of the SVG, including attributes
+  // the builtin SVG contents are clean, so it's safe to use `indexOf` to split the content:
+  // eg: <svg outer-attributes>${svgInnerHtml}</svg>
+  const p1 = svgStr.indexOf('>'), p2 = svgStr.lastIndexOf('<');
+  if (p1 === -1 || p2 === -1) throw new Error(`Invalid SVG icon: ${name}`);
+  const svgInnerHtml = svgStr.slice(p1 + 1, p2);
+  const svgOuterHtml = svgStr.slice(0, p1 + 1) + svgStr.slice(p2);
+  const svgDoc = parseDom(svgOuterHtml, 'image/svg+xml');
+  const svgOuter = svgDoc.firstChild;
+  return {svgOuter, svgInnerHtml};
+}
+
+export const SvgIcon = {
+  name: 'SvgIcon',
+  props: {
+    name: {type: String, required: true},
+    size: {type: Number, default: 16},
+    className: {type: String, default: ''},
+    symbolId: {type: String},
+  },
+  render() {
+    let {svgOuter, svgInnerHtml} = svgParseOuterInner(this.name);
+    // https://vuejs.org/guide/extras/render-function.html#creating-vnodes
+    // the `^` is used for attr, set SVG attributes like 'width', `aria-hidden`, `viewBox`, etc
+    const attrs = {};
+    for (const attr of svgOuter.attributes) {
+      if (attr.name === 'class') continue;
+      attrs[`^${attr.name}`] = attr.value;
+    }
+    attrs[`^width`] = this.size;
+    attrs[`^height`] = this.size;
+
+    // make the <SvgIcon class="foo" class-name="bar"> classes work together
+    const classes = [];
+    for (const cls of svgOuter.classList) {
+      classes.push(cls);
+    }
+    // TODO: drop the `className/class-name` prop in the future, only use "class" prop
+    if (this.className) {
+      classes.push(...this.className.split(/\s+/).filter(Boolean));
+    }
+    if (this.symbolId) {
+      classes.push('tw-hidden', 'svg-symbol-container');
+      svgInnerHtml = `<symbol id="${this.symbolId}" viewBox="${attrs['^viewBox']}">${svgInnerHtml}</symbol>`;
+    }
+    // create VNode
+    return h('svg', {
+      ...attrs,
+      class: classes,
+      innerHTML: svgInnerHtml,
+    });
+  },
+};
diff --git a/web_src/js/svg.test.js b/web_src/js/svg.test.js
new file mode 100644
index 00000000..06b320c8
--- /dev/null
+++ b/web_src/js/svg.test.js
@@ -0,0 +1,27 @@
+import {svg, SvgIcon, svgParseOuterInner} from './svg.js';
+import {createApp, h} from 'vue';
+
+test('svg', () => {
+  expect(svg('octicon-repo')).toMatch(/^<svg/);
+  expect(svg('octicon-repo', 16)).toContain('width="16"');
+  expect(svg('octicon-repo', 32)).toContain('width="32"');
+});
+
+test('svgParseOuterInner', () => {
+  const {svgOuter, svgInnerHtml} = svgParseOuterInner('octicon-repo');
+  expect(svgOuter.nodeName).toMatch('svg');
+  expect(svgOuter.classList.contains('octicon-repo')).toBeTruthy();
+  expect(svgInnerHtml).toContain('<path');
+});
+
+test('SvgIcon', () => {
+  const root = document.createElement('div');
+  createApp({render: () => h(SvgIcon, {name: 'octicon-link', size: 24, class: 'base', className: 'extra'})}).mount(root);
+  const node = root.firstChild;
+  expect(node.nodeName).toEqual('svg');
+  expect(node.getAttribute('width')).toEqual('24');
+  expect(node.getAttribute('height')).toEqual('24');
+  expect(node.classList.contains('octicon-link')).toBeTruthy();
+  expect(node.classList.contains('base')).toBeTruthy();
+  expect(node.classList.contains('extra')).toBeTruthy();
+});
diff --git a/web_src/js/utils.js b/web_src/js/utils.js
new file mode 100644
index 00000000..ce0fb663
--- /dev/null
+++ b/web_src/js/utils.js
@@ -0,0 +1,144 @@
+import {encode, decode} from 'uint8-to-base64';
+
+// transform /path/to/file.ext to file.ext
+export function basename(path = '') {
+  const lastSlashIndex = path.lastIndexOf('/');
+  return lastSlashIndex < 0 ? path : path.substring(lastSlashIndex + 1);
+}
+
+// transform /path/to/file.ext to .ext
+export function extname(path = '') {
+  const lastPointIndex = path.lastIndexOf('.');
+  return lastPointIndex < 0 ? '' : path.substring(lastPointIndex);
+}
+
+// test whether a variable is an object
+export function isObject(obj) {
+  return Object.prototype.toString.call(obj) === '[object Object]';
+}
+
+// returns whether a dark theme is enabled
+export function isDarkTheme() {
+  const style = window.getComputedStyle(document.documentElement);
+  return style.getPropertyValue('--is-dark-theme').trim().toLowerCase() === 'true';
+}
+
+// strip <tags> from a string
+export function stripTags(text) {
+  return text.replace(/<[^>]*>?/g, '');
+}
+
+export function parseIssueHref(href) {
+  const path = (href || '').replace(/[#?].*$/, '');
+  const [_, owner, repo, type, index] = /([^/]+)\/([^/]+)\/(issues|pulls)\/([0-9]+)/.exec(path) || [];
+  return {owner, repo, type, index};
+}
+
+// parse a URL, either relative '/path' or absolute 'https://localhost/path'
+export function parseUrl(str) {
+  return new URL(str, str.startsWith('http') ? undefined : window.location.origin);
+}
+
+// return current locale chosen by user
+export function getCurrentLocale() {
+  return document.documentElement.lang;
+}
+
+// given a month (0-11), returns it in the documents language
+export function translateMonth(month) {
+  return new Date(Date.UTC(2022, month, 12)).toLocaleString(getCurrentLocale(), {month: 'short', timeZone: 'UTC'});
+}
+
+// given a weekday (0-6, Sunday to Saturday), returns it in the documents language
+export function translateDay(day) {
+  return new Date(Date.UTC(2022, 7, day)).toLocaleString(getCurrentLocale(), {weekday: 'short', timeZone: 'UTC'});
+}
+
+// convert a Blob to a DataURI
+export function blobToDataURI(blob) {
+  return new Promise((resolve, reject) => {
+    try {
+      const reader = new FileReader();
+      reader.addEventListener('load', (e) => {
+        resolve(e.target.result);
+      });
+      reader.addEventListener('error', () => {
+        reject(new Error('FileReader failed'));
+      });
+      reader.readAsDataURL(blob);
+    } catch (err) {
+      reject(err);
+    }
+  });
+}
+
+// convert image Blob to another mime-type format.
+export function convertImage(blob, mime) {
+  return new Promise(async (resolve, reject) => {
+    try {
+      const img = new Image();
+      const canvas = document.createElement('canvas');
+      img.addEventListener('load', () => {
+        try {
+          canvas.width = img.naturalWidth;
+          canvas.height = img.naturalHeight;
+          const context = canvas.getContext('2d');
+          context.drawImage(img, 0, 0);
+          canvas.toBlob((blob) => {
+            if (!(blob instanceof Blob)) return reject(new Error('imageBlobToPng failed'));
+            resolve(blob);
+          }, mime);
+        } catch (err) {
+          reject(err);
+        }
+      });
+      img.addEventListener('error', () => {
+        reject(new Error('imageBlobToPng failed'));
+      });
+      img.src = await blobToDataURI(blob);
+    } catch (err) {
+      reject(err);
+    }
+  });
+}
+
+export function toAbsoluteUrl(url) {
+  if (url.startsWith('http://') || url.startsWith('https://')) {
+    return url;
+  }
+  if (url.startsWith('//')) {
+    return `${window.location.protocol}${url}`; // it's also a somewhat absolute URL (with the current scheme)
+  }
+  if (url && !url.startsWith('/')) {
+    throw new Error('unsupported url, it should either start with / or http(s)://');
+  }
+  return `${window.location.origin}${url}`;
+}
+
+// Encode an ArrayBuffer into a URLEncoded base64 string.
+export function encodeURLEncodedBase64(arrayBuffer) {
+  return encode(arrayBuffer)
+    .replace(/\+/g, '-')
+    .replace(/\//g, '_')
+    .replace(/=/g, '');
+}
+
+// Decode a URLEncoded base64 to an ArrayBuffer string.
+export function decodeURLEncodedBase64(base64url) {
+  return decode(base64url
+    .replace(/_/g, '/')
+    .replace(/-/g, '+'));
+}
+
+const domParser = new DOMParser();
+const xmlSerializer = new XMLSerializer();
+
+export function parseDom(text, contentType) {
+  return domParser.parseFromString(text, contentType);
+}
+
+export function serializeXml(node) {
+  return xmlSerializer.serializeToString(node);
+}
+
+export const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
diff --git a/web_src/js/utils.test.js b/web_src/js/utils.test.js
new file mode 100644
index 00000000..c49bb2a1
--- /dev/null
+++ b/web_src/js/utils.test.js
@@ -0,0 +1,189 @@
+import {
+  basename, extname, isObject, stripTags, parseIssueHref,
+  parseUrl, translateMonth, translateDay, blobToDataURI,
+  toAbsoluteUrl, encodeURLEncodedBase64, decodeURLEncodedBase64,
+  isDarkTheme, getCurrentLocale, parseDom, serializeXml, sleep,
+} from './utils.js';
+
+afterEach(() => {
+  // Reset head and body sections of the document
+  document.documentElement.innerHTML = '<head></head><body></body>';
+
+  // Remove 'lang' and 'style' attributes of html tag
+  document.documentElement.removeAttribute('lang');
+  document.documentElement.removeAttribute('style');
+});
+
+test('basename', () => {
+  expect(basename('/path/to/file.js')).toEqual('file.js');
+  expect(basename('/path/to/file')).toEqual('file');
+  expect(basename('file.js')).toEqual('file.js');
+});
+
+test('extname', () => {
+  expect(extname('/path/to/file.js')).toEqual('.js');
+  expect(extname('/path/')).toEqual('');
+  expect(extname('/path')).toEqual('');
+  expect(extname('file.js')).toEqual('.js');
+});
+
+test('isObject', () => {
+  expect(isObject({})).toBeTruthy();
+  expect(isObject([])).toBeFalsy();
+});
+
+test('should return true if dark theme is enabled', () => {
+  // When --is-dark-theme var is defined with value true
+  document.documentElement.style.setProperty('--is-dark-theme', 'true');
+  expect(isDarkTheme()).toBeTruthy();
+
+  // when --is-dark-theme var is defined with value TRUE
+  document.documentElement.style.setProperty('--is-dark-theme', 'TRUE');
+  expect(isDarkTheme()).toBeTruthy();
+});
+
+test('should return false if dark theme is disabled', () => {
+  // when --is-dark-theme var is defined with value false
+  document.documentElement.style.setProperty('--is-dark-theme', 'false');
+  expect(isDarkTheme()).toBeFalsy();
+
+  // when --is-dark-theme var is defined with value FALSE
+  document.documentElement.style.setProperty('--is-dark-theme', 'FALSE');
+  expect(isDarkTheme()).toBeFalsy();
+});
+
+test('should return false if dark theme is not defined', () => {
+  // when --is-dark-theme var is not exist
+  expect(isDarkTheme()).toBeFalsy();
+});
+
+test('stripTags', () => {
+  expect(stripTags('<a>test</a>')).toEqual('test');
+});
+
+test('parseIssueHref', () => {
+  expect(parseIssueHref('/owner/repo/issues/1')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('/owner/repo/pulls/1?query')).toEqual({owner: 'owner', repo: 'repo', type: 'pulls', index: '1'});
+  expect(parseIssueHref('/owner/repo/issues/1#hash')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('/sub/owner/repo/issues/1')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('/sub/sub2/owner/repo/pulls/1')).toEqual({owner: 'owner', repo: 'repo', type: 'pulls', index: '1'});
+  expect(parseIssueHref('/sub/sub2/owner/repo/issues/1?query')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('/sub/sub2/owner/repo/issues/1#hash')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('https://example.com/owner/repo/issues/1')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('https://example.com/owner/repo/pulls/1?query')).toEqual({owner: 'owner', repo: 'repo', type: 'pulls', index: '1'});
+  expect(parseIssueHref('https://example.com/owner/repo/issues/1#hash')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('https://example.com/sub/owner/repo/issues/1')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('https://example.com/sub/sub2/owner/repo/pulls/1')).toEqual({owner: 'owner', repo: 'repo', type: 'pulls', index: '1'});
+  expect(parseIssueHref('https://example.com/sub/sub2/owner/repo/issues/1?query')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('https://example.com/sub/sub2/owner/repo/issues/1#hash')).toEqual({owner: 'owner', repo: 'repo', type: 'issues', index: '1'});
+  expect(parseIssueHref('')).toEqual({owner: undefined, repo: undefined, type: undefined, index: undefined});
+});
+
+test('parseUrl', () => {
+  expect(parseUrl('').pathname).toEqual('/');
+  expect(parseUrl('/path').pathname).toEqual('/path');
+  expect(parseUrl('/path?search').pathname).toEqual('/path');
+  expect(parseUrl('/path?search').search).toEqual('?search');
+  expect(parseUrl('/path?search#hash').hash).toEqual('#hash');
+  expect(parseUrl('https://localhost/path').pathname).toEqual('/path');
+  expect(parseUrl('https://localhost/path?search').pathname).toEqual('/path');
+  expect(parseUrl('https://localhost/path?search').search).toEqual('?search');
+  expect(parseUrl('https://localhost/path?search#hash').hash).toEqual('#hash');
+});
+
+test('getCurrentLocale', () => {
+  // HTML document without explicit lang
+  expect(getCurrentLocale()).toEqual('');
+
+  // HTML document with explicit lang
+  document.documentElement.setAttribute('lang', 'en-US');
+  expect(getCurrentLocale()).toEqual('en-US');
+});
+
+test('translateMonth', () => {
+  const originalLang = document.documentElement.lang;
+  document.documentElement.lang = 'en-US';
+  expect(translateMonth(0)).toEqual('Jan');
+  expect(translateMonth(4)).toEqual('May');
+  document.documentElement.lang = 'es-ES';
+  expect(translateMonth(5)).toEqual('jun');
+  expect(translateMonth(6)).toEqual('jul');
+  document.documentElement.lang = originalLang;
+});
+
+test('translateDay', () => {
+  const originalLang = document.documentElement.lang;
+  document.documentElement.lang = 'fr-FR';
+  expect(translateDay(1)).toEqual('lun.');
+  expect(translateDay(5)).toEqual('ven.');
+  document.documentElement.lang = 'pl-PL';
+  expect(translateDay(1)).toEqual('pon.');
+  expect(translateDay(5)).toEqual('pt.');
+  document.documentElement.lang = originalLang;
+});
+
+test('blobToDataURI', async () => {
+  const blob = new Blob([JSON.stringify({test: true})], {type: 'application/json'});
+  expect(await blobToDataURI(blob)).toEqual('data:application/json;base64,eyJ0ZXN0Ijp0cnVlfQ==');
+});
+
+test('toAbsoluteUrl', () => {
+  expect(toAbsoluteUrl('//host/dir')).toEqual('http://host/dir');
+  expect(toAbsoluteUrl('https://host/dir')).toEqual('https://host/dir');
+  expect(toAbsoluteUrl('http://host/dir')).toEqual('http://host/dir');
+  expect(toAbsoluteUrl('')).toEqual('http://localhost:3000');
+  expect(toAbsoluteUrl('/user/repo')).toEqual('http://localhost:3000/user/repo');
+  expect(() => toAbsoluteUrl('path')).toThrowError('unsupported');
+});
+
+test('encodeURLEncodedBase64, decodeURLEncodedBase64', () => {
+  // TextEncoder is Node.js API while Uint8Array is jsdom API and their outputs are not
+  // structurally comparable, so we convert to array to compare. The conversion can be
+  // removed once https://github.com/jsdom/jsdom/issues/2524 is resolved.
+  const encoder = new TextEncoder();
+  const uint8array = encoder.encode.bind(encoder);
+
+  expect(encodeURLEncodedBase64(uint8array('AA?'))).toEqual('QUE_'); // standard base64: "QUE/"
+  expect(encodeURLEncodedBase64(uint8array('AA~'))).toEqual('QUF-'); // standard base64: "QUF+"
+
+  expect(Array.from(decodeURLEncodedBase64('QUE/'))).toEqual(Array.from(uint8array('AA?')));
+  expect(Array.from(decodeURLEncodedBase64('QUF+'))).toEqual(Array.from(uint8array('AA~')));
+  expect(Array.from(decodeURLEncodedBase64('QUE_'))).toEqual(Array.from(uint8array('AA?')));
+  expect(Array.from(decodeURLEncodedBase64('QUF-'))).toEqual(Array.from(uint8array('AA~')));
+
+  expect(encodeURLEncodedBase64(uint8array('a'))).toEqual('YQ'); // standard base64: "YQ=="
+  expect(Array.from(decodeURLEncodedBase64('YQ'))).toEqual(Array.from(uint8array('a')));
+  expect(Array.from(decodeURLEncodedBase64('YQ=='))).toEqual(Array.from(uint8array('a')));
+});
+
+test('parseDom', () => {
+  const paragraphStr = 'This is sample paragraph';
+  const paragraphTagStr = `<p>${paragraphStr}</p>`;
+  const content = parseDom(paragraphTagStr, 'text/html');
+  expect(content.body.innerHTML).toEqual(paragraphTagStr);
+
+  // Content should have only one paragraph
+  const paragraphs = content.getElementsByTagName('p');
+  expect(paragraphs.length).toEqual(1);
+  expect(paragraphs[0].textContent).toEqual(paragraphStr);
+});
+
+test('serializeXml', () => {
+  const textStr = 'This is a sample text';
+  const tagName = 'item';
+  const node = document.createElement(tagName);
+  node.textContent = textStr;
+  expect(serializeXml(node)).toEqual(`<${tagName}>${textStr}</${tagName}>`);
+});
+
+test('sleep', async () => {
+  await testSleep(2000);
+});
+
+async function testSleep(ms) {
+  const startTime = Date.now();  // Record the start time
+  await sleep(ms);
+  const endTime = Date.now();    // Record the end time
+  const actualSleepTime = endTime - startTime;
+  expect(actualSleepTime >= ms).toBeTruthy();
+}
diff --git a/web_src/js/utils/color.js b/web_src/js/utils/color.js
new file mode 100644
index 00000000..198f97c4
--- /dev/null
+++ b/web_src/js/utils/color.js
@@ -0,0 +1,33 @@
+import tinycolor from 'tinycolor2';
+
+// Returns relative luminance for a SRGB color - https://en.wikipedia.org/wiki/Relative_luminance
+// Keep this in sync with modules/util/color.go
+function getRelativeLuminance(color) {
+  const {r, g, b} = tinycolor(color).toRgb();
+  return (0.2126729 * r + 0.7151522 * g + 0.072175 * b) / 255;
+}
+
+function useLightText(backgroundColor) {
+  return getRelativeLuminance(backgroundColor) < 0.453;
+}
+
+// Given a background color, returns a black or white foreground color that the highest
+// contrast ratio. In the future, the APCA contrast function, or CSS `contrast-color` will be better.
+// https://github.com/color-js/color.js/blob/eb7b53f7a13bb716ec8b28c7a56f052cd599acd9/src/contrast/APCA.js#L42
+export function contrastColor(backgroundColor) {
+  return useLightText(backgroundColor) ? '#fff' : '#000';
+}
+
+function resolveColors(obj) {
+  const styles = window.getComputedStyle(document.documentElement);
+  const getColor = (name) => styles.getPropertyValue(name).trim();
+  return Object.fromEntries(Object.entries(obj).map(([key, value]) => [key, getColor(value)]));
+}
+
+export const chartJsColors = resolveColors({
+  text: '--color-text',
+  border: '--color-secondary-alpha-60',
+  commits: '--color-primary-alpha-60',
+  additions: '--color-green',
+  deletions: '--color-red',
+});
diff --git a/web_src/js/utils/color.test.js b/web_src/js/utils/color.test.js
new file mode 100644
index 00000000..fee9afc7
--- /dev/null
+++ b/web_src/js/utils/color.test.js
@@ -0,0 +1,22 @@
+import {contrastColor} from './color.js';
+
+test('contrastColor', () => {
+  expect(contrastColor('#d73a4a')).toBe('#fff');
+  expect(contrastColor('#0075ca')).toBe('#fff');
+  expect(contrastColor('#cfd3d7')).toBe('#000');
+  expect(contrastColor('#a2eeef')).toBe('#000');
+  expect(contrastColor('#7057ff')).toBe('#fff');
+  expect(contrastColor('#008672')).toBe('#fff');
+  expect(contrastColor('#e4e669')).toBe('#000');
+  expect(contrastColor('#d876e3')).toBe('#000');
+  expect(contrastColor('#ffffff')).toBe('#000');
+  expect(contrastColor('#2b8684')).toBe('#fff');
+  expect(contrastColor('#2b8786')).toBe('#fff');
+  expect(contrastColor('#2c8786')).toBe('#000');
+  expect(contrastColor('#3bb6b3')).toBe('#000');
+  expect(contrastColor('#7c7268')).toBe('#fff');
+  expect(contrastColor('#7e716c')).toBe('#fff');
+  expect(contrastColor('#81706d')).toBe('#fff');
+  expect(contrastColor('#807070')).toBe('#fff');
+  expect(contrastColor('#84b6eb')).toBe('#000');
+});
diff --git a/web_src/js/utils/dom.js b/web_src/js/utils/dom.js
new file mode 100644
index 00000000..a2a79e91
--- /dev/null
+++ b/web_src/js/utils/dom.js
@@ -0,0 +1,298 @@
+import {debounce} from 'throttle-debounce';
+
+function elementsCall(el, func, ...args) {
+  if (typeof el === 'string' || el instanceof String) {
+    el = document.querySelectorAll(el);
+  }
+  if (el instanceof Node) {
+    func(el, ...args);
+  } else if (el.length !== undefined) {
+    // this works for: NodeList, HTMLCollection, Array, jQuery
+    for (const e of el) {
+      func(e, ...args);
+    }
+  } else {
+    throw new Error('invalid argument to be shown/hidden');
+  }
+}
+
+/**
+ * @param el string (selector), Node, NodeList, HTMLCollection, Array or jQuery
+ * @param force force=true to show or force=false to hide, undefined to toggle
+ */
+function toggleShown(el, force) {
+  if (force === true) {
+    el.classList.remove('tw-hidden');
+  } else if (force === false) {
+    el.classList.add('tw-hidden');
+  } else if (force === undefined) {
+    el.classList.toggle('tw-hidden');
+  } else {
+    throw new Error('invalid force argument');
+  }
+}
+
+export function showElem(el) {
+  elementsCall(el, toggleShown, true);
+}
+
+export function hideElem(el) {
+  elementsCall(el, toggleShown, false);
+}
+
+export function toggleElem(el, force) {
+  elementsCall(el, toggleShown, force);
+}
+
+export function isElemHidden(el) {
+  const res = [];
+  elementsCall(el, (e) => res.push(e.classList.contains('tw-hidden')));
+  if (res.length > 1) throw new Error(`isElemHidden doesn't work for multiple elements`);
+  return res[0];
+}
+
+function applyElemsCallback(elems, fn) {
+  if (fn) {
+    for (const el of elems) {
+      fn(el);
+    }
+  }
+  return elems;
+}
+
+export function queryElemSiblings(el, selector = '*', fn) {
+  return applyElemsCallback(Array.from(el.parentNode.children).filter((child) => child !== el && child.matches(selector)), fn);
+}
+
+// it works like jQuery.children: only the direct children are selected
+export function queryElemChildren(parent, selector = '*', fn) {
+  return applyElemsCallback(parent.querySelectorAll(`:scope > ${selector}`), fn);
+}
+
+export function queryElems(selector, fn) {
+  return applyElemsCallback(document.querySelectorAll(selector), fn);
+}
+
+export function onDomReady(cb) {
+  if (document.readyState === 'loading') {
+    document.addEventListener('DOMContentLoaded', cb);
+  } else {
+    cb();
+  }
+}
+
+// checks whether an element is owned by the current document, and whether it is a document fragment or element node
+// if it is, it means it is a "normal" element managed by us, which can be modified safely.
+export function isDocumentFragmentOrElementNode(el) {
+  try {
+    return el.ownerDocument === document && el.nodeType === Node.ELEMENT_NODE || el.nodeType === Node.DOCUMENT_FRAGMENT_NODE;
+  } catch {
+    // in case the el is not in the same origin, then the access to nodeType would fail
+    return false;
+  }
+}
+
+// autosize a textarea to fit content. Based on
+// https://github.com/github/textarea-autosize
+// ---------------------------------------------------------------------
+// Copyright (c) 2018 GitHub, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be
+// included in all copies or substantial portions of the Software.
+// ---------------------------------------------------------------------
+export function autosize(textarea, {viewportMarginBottom = 0} = {}) {
+  let isUserResized = false;
+  // lastStyleHeight and initialStyleHeight are CSS values like '100px'
+  let lastMouseX, lastMouseY, lastStyleHeight, initialStyleHeight;
+
+  function onUserResize(event) {
+    if (isUserResized) return;
+    if (lastMouseX !== event.clientX || lastMouseY !== event.clientY) {
+      const newStyleHeight = textarea.style.height;
+      if (lastStyleHeight && lastStyleHeight !== newStyleHeight) {
+        isUserResized = true;
+      }
+      lastStyleHeight = newStyleHeight;
+    }
+
+    lastMouseX = event.clientX;
+    lastMouseY = event.clientY;
+  }
+
+  function overflowOffset() {
+    let offsetTop = 0;
+    let el = textarea;
+
+    while (el !== document.body && el !== null) {
+      offsetTop += el.offsetTop || 0;
+      el = el.offsetParent;
+    }
+
+    const top = offsetTop - document.defaultView.scrollY;
+    const bottom = document.documentElement.clientHeight - (top + textarea.offsetHeight);
+    return {top, bottom};
+  }
+
+  function resizeToFit() {
+    if (isUserResized) return;
+    if (textarea.offsetWidth <= 0 && textarea.offsetHeight <= 0) return;
+
+    try {
+      const {top, bottom} = overflowOffset();
+      const isOutOfViewport = top < 0 || bottom < 0;
+
+      const computedStyle = getComputedStyle(textarea);
+      const topBorderWidth = parseFloat(computedStyle.borderTopWidth);
+      const bottomBorderWidth = parseFloat(computedStyle.borderBottomWidth);
+      const isBorderBox = computedStyle.boxSizing === 'border-box';
+      const borderAddOn = isBorderBox ? topBorderWidth + bottomBorderWidth : 0;
+
+      const adjustedViewportMarginBottom = bottom < viewportMarginBottom ? bottom : viewportMarginBottom;
+      const curHeight = parseFloat(computedStyle.height);
+      const maxHeight = curHeight + bottom - adjustedViewportMarginBottom;
+
+      textarea.style.height = 'auto';
+      let newHeight = textarea.scrollHeight + borderAddOn;
+
+      if (isOutOfViewport) {
+        // it is already out of the viewport:
+        // * if the textarea is expanding: do not resize it
+        if (newHeight > curHeight) {
+          newHeight = curHeight;
+        }
+        // * if the textarea is shrinking, shrink line by line (just use the
+        //   scrollHeight). do not apply max-height limit, otherwise the page
+        //   flickers and the textarea jumps
+      } else {
+        // * if it is in the viewport, apply the max-height limit
+        newHeight = Math.min(maxHeight, newHeight);
+      }
+
+      textarea.style.height = `${newHeight}px`;
+      lastStyleHeight = textarea.style.height;
+    } finally {
+      // ensure that the textarea is fully scrolled to the end, when the cursor
+      // is at the end during an input event
+      if (textarea.selectionStart === textarea.selectionEnd &&
+          textarea.selectionStart === textarea.value.length) {
+        textarea.scrollTop = textarea.scrollHeight;
+      }
+    }
+  }
+
+  function onFormReset() {
+    isUserResized = false;
+    if (initialStyleHeight !== undefined) {
+      textarea.style.height = initialStyleHeight;
+    } else {
+      textarea.style.removeProperty('height');
+    }
+  }
+
+  textarea.addEventListener('mousemove', onUserResize);
+  textarea.addEventListener('input', resizeToFit);
+  textarea.form?.addEventListener('reset', onFormReset);
+  initialStyleHeight = textarea.style.height ?? undefined;
+  if (textarea.value) resizeToFit();
+
+  return {
+    resizeToFit,
+    destroy() {
+      textarea.removeEventListener('mousemove', onUserResize);
+      textarea.removeEventListener('input', resizeToFit);
+      textarea.form?.removeEventListener('reset', onFormReset);
+    },
+  };
+}
+
+export function onInputDebounce(fn) {
+  return debounce(300, fn);
+}
+
+// Set the `src` attribute on an element and returns a promise that resolves once the element
+// has loaded or errored. Suitable for all elements mention in:
+// https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/load_event
+export function loadElem(el, src) {
+  return new Promise((resolve) => {
+    el.addEventListener('load', () => resolve(true), {once: true});
+    el.addEventListener('error', () => resolve(false), {once: true});
+    el.src = src;
+  });
+}
+
+// some browsers like PaleMoon don't have "SubmitEvent" support, so polyfill it by a tricky method: use the last clicked button as submitter
+// it can't use other transparent polyfill patches because PaleMoon also doesn't support "addEventListener(capture)"
+const needSubmitEventPolyfill = typeof SubmitEvent === 'undefined';
+
+export function submitEventSubmitter(e) {
+  return needSubmitEventPolyfill ? (e.target._submitter || null) : e.submitter;
+}
+
+function submitEventPolyfillListener(e) {
+  const form = e.target.closest('form');
+  if (!form) return;
+  form._submitter = e.target.closest('button:not([type]), button[type="submit"], input[type="submit"]');
+}
+
+export function initSubmitEventPolyfill() {
+  if (!needSubmitEventPolyfill) return;
+  console.warn(`This browser doesn't have "SubmitEvent" support, use a tricky method to polyfill`);
+  document.body.addEventListener('click', submitEventPolyfillListener);
+  document.body.addEventListener('focus', submitEventPolyfillListener);
+}
+
+/**
+ * Check if an element is visible, equivalent to jQuery's `:visible` pseudo.
+ * Note: This function doesn't account for all possible visibility scenarios.
+ * @param {HTMLElement} element The element to check.
+ * @returns {boolean} True if the element is visible.
+ */
+export function isElemVisible(element) {
+  if (!element) return false;
+
+  return Boolean(element.offsetWidth || element.offsetHeight || element.getClientRects().length);
+}
+
+// extract text and images from "paste" event
+export function getPastedContent(e) {
+  const images = [];
+  for (const item of e.clipboardData?.items ?? []) {
+    if (item.type?.startsWith('image/')) {
+      images.push(item.getAsFile());
+    }
+  }
+  const text = e.clipboardData?.getData?.('text') ?? '';
+  return {text, images};
+}
+
+// replace selected text in a textarea while preserving editor history, e.g. CTRL-Z works after this
+export function replaceTextareaSelection(textarea, text) {
+  const before = textarea.value.slice(0, textarea.selectionStart ?? undefined);
+  const after = textarea.value.slice(textarea.selectionEnd ?? undefined);
+  let success = true;
+
+  textarea.contentEditable = 'true';
+  try {
+    success = document.execCommand('insertText', false, text);
+  } catch {
+    success = false;
+  }
+  textarea.contentEditable = 'false';
+
+  if (success && !textarea.value.slice(0, textarea.selectionStart ?? undefined).endsWith(text)) {
+    success = false;
+  }
+
+  if (!success) {
+    textarea.value = `${before}${text}${after}`;
+    textarea.dispatchEvent(new CustomEvent('change', {bubbles: true, cancelable: true}));
+  }
+}
diff --git a/web_src/js/utils/image.js b/web_src/js/utils/image.js
new file mode 100644
index 00000000..ed5d98e3
--- /dev/null
+++ b/web_src/js/utils/image.js
@@ -0,0 +1,47 @@
+export async function pngChunks(blob) {
+  const uint8arr = new Uint8Array(await blob.arrayBuffer());
+  const chunks = [];
+  if (uint8arr.length < 12) return chunks;
+  const view = new DataView(uint8arr.buffer);
+  if (view.getBigUint64(0) !== 9894494448401390090n) return chunks;
+
+  const decoder = new TextDecoder();
+  let index = 8;
+  while (index < uint8arr.length) {
+    const len = view.getUint32(index);
+    chunks.push({
+      name: decoder.decode(uint8arr.slice(index + 4, index + 8)),
+      data: uint8arr.slice(index + 8, index + 8 + len),
+    });
+    index += len + 12;
+  }
+
+  return chunks;
+}
+
+// decode a image and try to obtain width and dppx. If will never throw but instead
+// return default values.
+export async function imageInfo(blob) {
+  let width = 0; // 0 means no width could be determined
+  let dppx = 1; // 1 dot per pixel for non-HiDPI screens
+
+  if (blob.type === 'image/png') { // only png is supported currently
+    try {
+      for (const {name, data} of await pngChunks(blob)) {
+        const view = new DataView(data.buffer);
+        if (name === 'IHDR' && data?.length) {
+          // extract width from mandatory IHDR chunk
+          width = view.getUint32(0);
+        } else if (name === 'pHYs' && data?.length) {
+          // extract dppx from optional pHYs chunk, assuming pixels are square
+          const unit = view.getUint8(8);
+          if (unit === 1) {
+            dppx = Math.round(view.getUint32(0) / 39.3701) / 72; // meter to inch to dppx
+          }
+        }
+      }
+    } catch {}
+  }
+
+  return {width, dppx};
+}
diff --git a/web_src/js/utils/image.test.js b/web_src/js/utils/image.test.js
new file mode 100644
index 00000000..ba475825
--- /dev/null
+++ b/web_src/js/utils/image.test.js
@@ -0,0 +1,29 @@
+import {pngChunks, imageInfo} from './image.js';
+
+const pngNoPhys = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAAAAAA6fptVAAAADUlEQVQIHQECAP3/AAAAAgABzePRKwAAAABJRU5ErkJggg==';
+const pngPhys = 'data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAIAAAD91JpzAAAACXBIWXMAABYlAAAWJQFJUiTwAAAAEElEQVQI12OQNZcAIgYIBQAL8gGxdzzM0A==';
+const pngEmpty = 'data:image/png;base64,';
+
+async function dataUriToBlob(datauri) {
+  return await (await globalThis.fetch(datauri)).blob();
+}
+
+test('pngChunks', async () => {
+  expect(await pngChunks(await dataUriToBlob(pngNoPhys))).toEqual([
+    {name: 'IHDR', data: new Uint8Array([0, 0, 0, 1, 0, 0, 0, 1, 8, 0, 0, 0, 0])},
+    {name: 'IDAT', data: new Uint8Array([8, 29, 1, 2, 0, 253, 255, 0, 0, 0, 2, 0, 1])},
+    {name: 'IEND', data: new Uint8Array([])},
+  ]);
+  expect(await pngChunks(await dataUriToBlob(pngPhys))).toEqual([
+    {name: 'IHDR', data: new Uint8Array([0, 0, 0, 2, 0, 0, 0, 2, 8, 2, 0, 0, 0])},
+    {name: 'pHYs', data: new Uint8Array([0, 0, 22, 37, 0, 0, 22, 37, 1])},
+    {name: 'IDAT', data: new Uint8Array([8, 215, 99, 144, 53, 151, 0, 34, 6, 8, 5, 0, 11, 242, 1, 177])},
+  ]);
+  expect(await pngChunks(await dataUriToBlob(pngEmpty))).toEqual([]);
+});
+
+test('imageInfo', async () => {
+  expect(await imageInfo(await dataUriToBlob(pngNoPhys))).toEqual({width: 1, dppx: 1});
+  expect(await imageInfo(await dataUriToBlob(pngPhys))).toEqual({width: 2, dppx: 2});
+  expect(await imageInfo(await dataUriToBlob(pngEmpty))).toEqual({width: 0, dppx: 1});
+});
diff --git a/web_src/js/utils/match.js b/web_src/js/utils/match.js
new file mode 100644
index 00000000..17fdfed1
--- /dev/null
+++ b/web_src/js/utils/match.js
@@ -0,0 +1,43 @@
+import emojis from '../../../assets/emoji.json';
+
+const maxMatches = 6;
+
+function sortAndReduce(map) {
+  const sortedMap = new Map(Array.from(map.entries()).sort((a, b) => a[1] - b[1]));
+  return Array.from(sortedMap.keys()).slice(0, maxMatches);
+}
+
+export function matchEmoji(queryText) {
+  const query = queryText.toLowerCase().replaceAll('_', ' ');
+  if (!query) return emojis.slice(0, maxMatches).map((e) => e.aliases[0]);
+
+  // results is a map of weights, lower is better
+  const results = new Map();
+  for (const {aliases} of emojis) {
+    const mainAlias = aliases[0];
+    for (const [aliasIndex, alias] of aliases.entries()) {
+      const index = alias.replaceAll('_', ' ').indexOf(query);
+      if (index === -1) continue;
+      const existing = results.get(mainAlias);
+      const rankedIndex = index + aliasIndex;
+      results.set(mainAlias, existing ? existing - rankedIndex : rankedIndex);
+    }
+  }
+
+  return sortAndReduce(results);
+}
+
+export function matchMention(queryText) {
+  const query = queryText.toLowerCase();
+
+  // results is a map of weights, lower is better
+  const results = new Map();
+  for (const obj of window.config.mentionValues ?? []) {
+    const index = obj.key.toLowerCase().indexOf(query);
+    if (index === -1) continue;
+    const existing = results.get(obj);
+    results.set(obj, existing ? existing - index : index);
+  }
+
+  return sortAndReduce(results);
+}
diff --git a/web_src/js/utils/match.test.js b/web_src/js/utils/match.test.js
new file mode 100644
index 00000000..1e30b451
--- /dev/null
+++ b/web_src/js/utils/match.test.js
@@ -0,0 +1,50 @@
+import {matchEmoji, matchMention} from './match.js';
+
+test('matchEmoji', () => {
+  expect(matchEmoji('')).toEqual([
+    '+1',
+    '-1',
+    '100',
+    '1234',
+    '1st_place_medal',
+    '2nd_place_medal',
+  ]);
+
+  expect(matchEmoji('hea')).toEqual([
+    'headphones',
+    'headstone',
+    'health_worker',
+    'hear_no_evil',
+    'heard_mcdonald_islands',
+    'heart',
+  ]);
+
+  expect(matchEmoji('hear')).toEqual([
+    'hear_no_evil',
+    'heard_mcdonald_islands',
+    'heart',
+    'heart_decoration',
+    'heart_eyes',
+    'heart_eyes_cat',
+  ]);
+
+  expect(matchEmoji('poo')).toEqual([
+    'poodle',
+    'hankey',
+    'spoon',
+    'bowl_with_spoon',
+  ]);
+
+  expect(matchEmoji('1st_')).toEqual([
+    '1st_place_medal',
+  ]);
+
+  expect(matchEmoji('jellyfis')).toEqual([
+    'jellyfish',
+  ]);
+});
+
+test('matchMention', () => {
+  expect(matchMention('')).toEqual(window.config.mentionValues.slice(0, 6));
+  expect(matchMention('user4')).toEqual([window.config.mentionValues[3]]);
+});
diff --git a/web_src/js/utils/time.js b/web_src/js/utils/time.js
new file mode 100644
index 00000000..7c7eabd1
--- /dev/null
+++ b/web_src/js/utils/time.js
@@ -0,0 +1,72 @@
+import dayjs from 'dayjs';
+import utc from 'dayjs/plugin/utc.js';
+import {getCurrentLocale} from '../utils.js';
+
+dayjs.extend(utc);
+
+/**
+ * Returns an array of millisecond-timestamps of start-of-week days (Sundays)
+ *
+ * @param startConfig The start date. Can take any type that `Date` accepts.
+ * @param endConfig The end date. Can take any type that `Date` accepts.
+ */
+export function startDaysBetween(startDate, endDate) {
+  const start = dayjs.utc(startDate);
+  const end = dayjs.utc(endDate);
+
+  let current = start;
+
+  // Ensure the start date is a Sunday
+  while (current.day() !== 0) {
+    current = current.add(1, 'day');
+  }
+
+  const startDays = [];
+  while (current.isBefore(end)) {
+    startDays.push(current.valueOf());
+    current = current.add(1, 'week');
+  }
+
+  return startDays;
+}
+
+export function firstStartDateAfterDate(inputDate) {
+  if (!(inputDate instanceof Date)) {
+    throw new Error('Invalid date');
+  }
+  const dayOfWeek = inputDate.getUTCDay();
+  const daysUntilSunday = 7 - dayOfWeek;
+  const resultDate = new Date(inputDate.getTime());
+  resultDate.setUTCDate(resultDate.getUTCDate() + daysUntilSunday);
+  return resultDate.valueOf();
+}
+
+export function fillEmptyStartDaysWithZeroes(startDays, data) {
+  const result = {};
+
+  for (const startDay of startDays) {
+    result[startDay] = data[startDay] || {'week': startDay, 'additions': 0, 'deletions': 0, 'commits': 0};
+  }
+
+  return Object.values(result);
+}
+
+let dateFormat;
+
+// format a Date object to document's locale, but with 24h format from user's current locale because this
+// option is a personal preference of the user, not something that the document's locale should dictate.
+export function formatDatetime(date) {
+  if (!dateFormat) {
+    // TODO: replace `hour12` with `Intl.Locale.prototype.getHourCycles` once there is broad browser support
+    dateFormat = new Intl.DateTimeFormat(getCurrentLocale(), {
+      day: 'numeric',
+      month: 'short',
+      year: 'numeric',
+      hour: 'numeric',
+      hour12: !Number.isInteger(Number(new Intl.DateTimeFormat([], {hour: 'numeric'}).format())),
+      minute: '2-digit',
+      timeZoneName: 'short',
+    });
+  }
+  return dateFormat.format(date);
+}
diff --git a/web_src/js/utils/time.test.js b/web_src/js/utils/time.test.js
new file mode 100644
index 00000000..dbe5d7d0
--- /dev/null
+++ b/web_src/js/utils/time.test.js
@@ -0,0 +1,40 @@
+import {firstStartDateAfterDate, startDaysBetween, fillEmptyStartDaysWithZeroes} from './time.js';
+
+test('startDaysBetween', () => {
+  expect(startDaysBetween(new Date('2024-02-15'), new Date('2024-04-18'))).toEqual([
+    1708214400000,
+    1708819200000,
+    1709424000000,
+    1710028800000,
+    1710633600000,
+    1711238400000,
+    1711843200000,
+    1712448000000,
+    1713052800000,
+  ]);
+});
+
+test('firstStartDateAfterDate', () => {
+  const expectedDate = new Date('2024-02-18').getTime();
+  expect(firstStartDateAfterDate(new Date('2024-02-15'))).toEqual(expectedDate);
+
+  expect(() => firstStartDateAfterDate('2024-02-15')).toThrowError('Invalid date');
+});
+test('fillEmptyStartDaysWithZeroes with data', () => {
+  expect(fillEmptyStartDaysWithZeroes([1708214400000, 1708819200000, 1708819300000], {
+    1708214400000: {'week': 1708214400000, 'additions': 1, 'deletions': 2, 'commits': 3},
+    1708819200000: {'week': 1708819200000, 'additions': 4, 'deletions': 5, 'commits': 6},
+  })).toEqual([
+    {'week': 1708214400000, 'additions': 1, 'deletions': 2, 'commits': 3},
+    {'week': 1708819200000, 'additions': 4, 'deletions': 5, 'commits': 6},
+    {
+      'additions': 0,
+      'commits': 0,
+      'deletions': 0,
+      'week': 1708819300000,
+    }]);
+});
+
+test('fillEmptyStartDaysWithZeroes with empty array', () => {
+  expect(fillEmptyStartDaysWithZeroes([], {})).toEqual([]);
+});
diff --git a/web_src/js/utils/url.js b/web_src/js/utils/url.js
new file mode 100644
index 00000000..470ece31
--- /dev/null
+++ b/web_src/js/utils/url.js
@@ -0,0 +1,15 @@
+export function pathEscapeSegments(s) {
+  return s.split('/').map(encodeURIComponent).join('/');
+}
+
+function stripSlash(url) {
+  return url.endsWith('/') ? url.slice(0, -1) : url;
+}
+
+export function isUrl(url) {
+  try {
+    return stripSlash((new URL(url).href)).trim() === stripSlash(url).trim();
+  } catch {
+    return false;
+  }
+}
diff --git a/web_src/js/utils/url.test.js b/web_src/js/utils/url.test.js
new file mode 100644
index 00000000..08c6373f
--- /dev/null
+++ b/web_src/js/utils/url.test.js
@@ -0,0 +1,13 @@
+import {pathEscapeSegments, isUrl} from './url.js';
+
+test('pathEscapeSegments', () => {
+  expect(pathEscapeSegments('a/b/c')).toEqual('a/b/c');
+  expect(pathEscapeSegments('a/b/ c')).toEqual('a/b/%20c');
+});
+
+test('isUrl', () => {
+  expect(isUrl('https://example.com')).toEqual(true);
+  expect(isUrl('https://example.com/')).toEqual(true);
+  expect(isUrl('https://example.com/index.html')).toEqual(true);
+  expect(isUrl('/index.html')).toEqual(false);
+});
diff --git a/web_src/js/vendor/jquery.are-you-sure.js b/web_src/js/vendor/jquery.are-you-sure.js
new file mode 100644
index 00000000..e06da39f
--- /dev/null
+++ b/web_src/js/vendor/jquery.are-you-sure.js
@@ -0,0 +1,195 @@
+// Fork of the upstream module. The only changes are the addition of `const` on
+// lines 93 and 161 to make it strict mode compatible.
+
+/*!
+ * jQuery Plugin: Are-You-Sure (Dirty Form Detection)
+ * https://github.com/codedance/jquery.AreYouSure/
+ *
+ * Copyright (c) 2012-2014, Chris Dance and PaperCut Software http://www.papercut.com/
+ * Dual licensed under the MIT or GPL Version 2 licenses.
+ * http://jquery.org/license
+ *
+ * Author:  chris.dance@papercut.com
+ * Version: 1.9.0
+ * Date:    13th August 2014
+ */
+(function($) {
+
+  $.fn.areYouSure = function(options) {
+
+    var settings = $.extend(
+      {
+        'message' : 'You have unsaved changes!',
+        'dirtyClass' : 'dirty',
+        'change' : null,
+        'silent' : false,
+        'addRemoveFieldsMarksDirty' : false,
+        'fieldEvents' : 'change keyup propertychange input',
+        'fieldSelector': ":input:not(input[type=submit]):not(input[type=button])"
+      }, options);
+
+    var getValue = function($field) {
+      if ($field.hasClass('ays-ignore')
+          || $field.hasClass('aysIgnore')
+          || $field.attr('data-ays-ignore')
+          || $field.attr('name') === undefined) {
+        return null;
+      }
+
+      if ($field.is(':disabled')) {
+        return 'ays-disabled';
+      }
+
+      var val;
+      var type = $field.attr('type');
+      if ($field.is('select')) {
+        type = 'select';
+      }
+
+      switch (type) {
+        case 'checkbox':
+        case 'radio':
+          val = $field.is(':checked');
+          break;
+        case 'select':
+          val = '';
+          $field.find('option').each(function(o) {
+            var $option = $(this);
+            if ($option.is(':selected')) {
+              val += $option.val();
+            }
+          });
+          break;
+        default:
+          val = $field.val();
+      }
+
+      return val;
+    };
+
+    var storeOrigValue = function($field) {
+      $field.data('ays-orig', getValue($field));
+    };
+
+    var checkForm = function(evt) {
+
+      var isFieldDirty = function($field) {
+        var origValue = $field.data('ays-orig');
+        if (undefined === origValue) {
+          return false;
+        }
+        return (getValue($field) != origValue);
+      };
+
+      var $form = ($(this).is('form'))
+                    ? $(this)
+                    : $(this).parents('form');
+
+      // Test on the target first as it's the most likely to be dirty
+      if (isFieldDirty($(evt.target))) {
+        setDirtyStatus($form, true);
+        return;
+      }
+
+      const $fields = $form.find(settings.fieldSelector);
+
+      if (settings.addRemoveFieldsMarksDirty) {
+        // Check if field count has changed
+        var origCount = $form.data("ays-orig-field-count");
+        if (origCount != $fields.length) {
+          setDirtyStatus($form, true);
+          return;
+        }
+      }
+
+      // Brute force - check each field
+      var isDirty = false;
+      $fields.each(function() {
+        var $field = $(this);
+        if (isFieldDirty($field)) {
+          isDirty = true;
+          return false; // break
+        }
+      });
+
+      setDirtyStatus($form, isDirty);
+    };
+
+    var initForm = function($form) {
+      var fields = $form.find(settings.fieldSelector);
+      $(fields).each(function() { storeOrigValue($(this)); });
+      $(fields).unbind(settings.fieldEvents, checkForm);
+      $(fields).bind(settings.fieldEvents, checkForm);
+      $form.data("ays-orig-field-count", $(fields).length);
+      setDirtyStatus($form, false);
+    };
+
+    var setDirtyStatus = function($form, isDirty) {
+      var changed = isDirty != $form.hasClass(settings.dirtyClass);
+      $form.toggleClass(settings.dirtyClass, isDirty);
+
+      // Fire change event if required
+      if (changed) {
+        if (settings.change) settings.change.call($form, $form);
+
+        if (isDirty) $form.trigger('dirty.areYouSure', [$form]);
+        if (!isDirty) $form.trigger('clean.areYouSure', [$form]);
+        $form.trigger('change.areYouSure', [$form]);
+      }
+    };
+
+    var rescan = function() {
+      var $form = $(this);
+      var fields = $form.find(settings.fieldSelector);
+      $(fields).each(function() {
+        var $field = $(this);
+        if (!$field.data('ays-orig')) {
+          storeOrigValue($field);
+          $field.bind(settings.fieldEvents, checkForm);
+        }
+      });
+      // Check for changes while we're here
+      $form.trigger('checkform.areYouSure');
+    };
+
+    var reinitialize = function() {
+      initForm($(this));
+    }
+
+    if (!settings.silent && !window.aysUnloadSet) {
+      window.aysUnloadSet = true;
+      $(window).bind('beforeunload', function() {
+        const $dirtyForms = $("form").filter('.' + settings.dirtyClass);
+        if ($dirtyForms.length == 0) {
+          return;
+        }
+        // Prevent multiple prompts - seen on Chrome and IE
+        if (navigator.userAgent.toLowerCase().match(/msie|chrome/)) {
+          if (window.aysHasPrompted) {
+            return;
+          }
+          window.aysHasPrompted = true;
+          window.setTimeout(function() {window.aysHasPrompted = false;}, 900);
+        }
+        return settings.message;
+      });
+    }
+
+    return this.each(function(elem) {
+      if (!$(this).is('form')) {
+        return;
+      }
+      var $form = $(this);
+
+      $form.submit(function() {
+        $form.removeClass(settings.dirtyClass);
+      });
+      $form.bind('reset', function() { setDirtyStatus($form, false); });
+      // Add a custom events
+      $form.bind('rescan.areYouSure', rescan);
+      $form.bind('reinitialize.areYouSure', reinitialize);
+      $form.bind('checkform.areYouSure', checkForm);
+      initForm($form);
+    });
+  };
+})(jQuery);
diff --git a/web_src/js/vitest.setup.js b/web_src/js/vitest.setup.js
new file mode 100644
index 00000000..5366958f
--- /dev/null
+++ b/web_src/js/vitest.setup.js
@@ -0,0 +1,18 @@
+window.__webpack_public_path__ = '';
+
+window.config = {
+  csrfToken: 'test-csrf-token-123456',
+  pageData: {},
+  i18n: {},
+  customEmojis: {},
+  appSubUrl: '',
+  mentionValues: [
+    {key: 'user1 User 1', value: 'user1', name: 'user1', fullname: 'User 1', avatar: 'https://avatar1.com'},
+    {key: 'user2 User 2', value: 'user2', name: 'user2', fullname: 'User 2', avatar: 'https://avatar2.com'},
+    {key: 'org3 User 3', value: 'org3', name: 'org3', fullname: 'User 3', avatar: 'https://avatar3.com'},
+    {key: 'user4 User 4', value: 'user4', name: 'user4', fullname: 'User 4', avatar: 'https://avatar4.com'},
+    {key: 'user5 User 5', value: 'user5', name: 'user5', fullname: 'User 5', avatar: 'https://avatar5.com'},
+    {key: 'org6 User 6', value: 'org6', name: 'org6', fullname: 'User 6', avatar: 'https://avatar6.com'},
+    {key: 'org7 User 7', value: 'org7', name: 'org7', fullname: 'User 7', avatar: 'https://avatar7.com'},
+  ],
+};
diff --git a/web_src/js/webcomponents/README.md b/web_src/js/webcomponents/README.md
new file mode 100644
index 00000000..45af58e1
--- /dev/null
+++ b/web_src/js/webcomponents/README.md
@@ -0,0 +1,11 @@
+# Web Components
+
+This `webcomponents` directory contains the source code for the web components used in the Gitea Web UI.
+
+https://developer.mozilla.org/en-US/docs/Web/Web_Components
+
+# Guidelines
+
+* These components are loaded in `<head>` (before DOM body) in a separate entry point, they need to be lightweight to not affect the page loading time too much.
+* Do not import `svg.js` into a web component because that file is currently not tree-shakeable, import svg files individually insteat.
+* All our components must be added to `webpack.config.js` so they work correctly in Vue.
diff --git a/web_src/js/webcomponents/absolute-date.js b/web_src/js/webcomponents/absolute-date.js
new file mode 100644
index 00000000..d2be4553
--- /dev/null
+++ b/web_src/js/webcomponents/absolute-date.js
@@ -0,0 +1,40 @@
+import {Temporal} from 'temporal-polyfill';
+
+export function toAbsoluteLocaleDate(dateStr, lang, opts) {
+  return Temporal.PlainDate.from(dateStr).toLocaleString(lang ?? [], opts);
+}
+
+window.customElements.define('absolute-date', class extends HTMLElement {
+  static observedAttributes = ['date', 'year', 'month', 'weekday', 'day'];
+
+  update = () => {
+    const year = this.getAttribute('year') ?? '';
+    const month = this.getAttribute('month') ?? '';
+    const weekday = this.getAttribute('weekday') ?? '';
+    const day = this.getAttribute('day') ?? '';
+    const lang = this.closest('[lang]')?.getAttribute('lang') ||
+      this.ownerDocument.documentElement.getAttribute('lang') || '';
+
+    // only use the first 10 characters, e.g. the `yyyy-mm-dd` part
+    const dateStr = this.getAttribute('date').substring(0, 10);
+
+    if (!this.shadowRoot) this.attachShadow({mode: 'open'});
+    this.shadowRoot.textContent = toAbsoluteLocaleDate(dateStr, lang, {
+      ...(year && {year}),
+      ...(month && {month}),
+      ...(weekday && {weekday}),
+      ...(day && {day}),
+    });
+  };
+
+  attributeChangedCallback(_name, oldValue, newValue) {
+    if (!this.initialized || oldValue === newValue) return;
+    this.update();
+  }
+
+  connectedCallback() {
+    this.initialized = false;
+    this.update();
+    this.initialized = true;
+  }
+});
diff --git a/web_src/js/webcomponents/absolute-date.test.js b/web_src/js/webcomponents/absolute-date.test.js
new file mode 100644
index 00000000..ba04451b
--- /dev/null
+++ b/web_src/js/webcomponents/absolute-date.test.js
@@ -0,0 +1,15 @@
+import {toAbsoluteLocaleDate} from './absolute-date.js';
+
+test('toAbsoluteLocaleDate', () => {
+  expect(toAbsoluteLocaleDate('2024-03-15', 'en-US', {
+    year: 'numeric',
+    month: 'long',
+    day: 'numeric',
+  })).toEqual('March 15, 2024');
+
+  expect(toAbsoluteLocaleDate('2024-03-15', 'de-DE', {
+    year: 'numeric',
+    month: 'long',
+    day: 'numeric',
+  })).toEqual('15. März 2024');
+});
diff --git a/web_src/js/webcomponents/index.js b/web_src/js/webcomponents/index.js
new file mode 100644
index 00000000..7cec9da7
--- /dev/null
+++ b/web_src/js/webcomponents/index.js
@@ -0,0 +1,5 @@
+import './polyfills.js';
+import '@github/relative-time-element';
+import './origin-url.js';
+import './overflow-menu.js';
+import './absolute-date.js';
diff --git a/web_src/js/webcomponents/origin-url.js b/web_src/js/webcomponents/origin-url.js
new file mode 100644
index 00000000..09aa77f2
--- /dev/null
+++ b/web_src/js/webcomponents/origin-url.js
@@ -0,0 +1,22 @@
+// Convert an absolute or relative URL to an absolute URL with the current origin. It only
+// processes absolute HTTP/HTTPS URLs or relative URLs like '/xxx' or '//host/xxx'.
+// NOTE: Keep this function in sync with clone_script.tmpl
+export function toOriginUrl(urlStr) {
+  try {
+    if (urlStr.startsWith('http://') || urlStr.startsWith('https://') || urlStr.startsWith('/')) {
+      const {origin, protocol, hostname, port} = window.location;
+      const url = new URL(urlStr, origin);
+      url.protocol = protocol;
+      url.hostname = hostname;
+      url.port = port || (protocol === 'https:' ? '443' : '80');
+      return url.toString();
+    }
+  } catch {}
+  return urlStr;
+}
+
+window.customElements.define('origin-url', class extends HTMLElement {
+  connectedCallback() {
+    this.textContent = toOriginUrl(this.getAttribute('data-url'));
+  }
+});
diff --git a/web_src/js/webcomponents/origin-url.test.js b/web_src/js/webcomponents/origin-url.test.js
new file mode 100644
index 00000000..3b2ab89f
--- /dev/null
+++ b/web_src/js/webcomponents/origin-url.test.js
@@ -0,0 +1,17 @@
+import {toOriginUrl} from './origin-url.js';
+
+test('toOriginUrl', () => {
+  const oldLocation = window.location;
+  for (const origin of ['https://example.com', 'https://example.com:3000']) {
+    window.location = new URL(`${origin}/`);
+    expect(toOriginUrl('/')).toEqual(`${origin}/`);
+    expect(toOriginUrl('/org/repo.git')).toEqual(`${origin}/org/repo.git`);
+    expect(toOriginUrl('https://another.com')).toEqual(`${origin}/`);
+    expect(toOriginUrl('https://another.com/')).toEqual(`${origin}/`);
+    expect(toOriginUrl('https://another.com/org/repo.git')).toEqual(`${origin}/org/repo.git`);
+    expect(toOriginUrl('https://another.com:4000')).toEqual(`${origin}/`);
+    expect(toOriginUrl('https://another.com:4000/')).toEqual(`${origin}/`);
+    expect(toOriginUrl('https://another.com:4000/org/repo.git')).toEqual(`${origin}/org/repo.git`);
+  }
+  window.location = oldLocation;
+});
diff --git a/web_src/js/webcomponents/overflow-menu.js b/web_src/js/webcomponents/overflow-menu.js
new file mode 100644
index 00000000..a69ce168
--- /dev/null
+++ b/web_src/js/webcomponents/overflow-menu.js
@@ -0,0 +1,220 @@
+import {throttle} from 'throttle-debounce';
+import {createTippy} from '../modules/tippy.js';
+import {isDocumentFragmentOrElementNode} from '../utils/dom.js';
+import octiconKebabHorizontal from '../../../public/assets/img/svg/octicon-kebab-horizontal.svg';
+
+window.customElements.define('overflow-menu', class extends HTMLElement {
+  updateItems = throttle(100, () => {
+    if (!this.tippyContent) {
+      const div = document.createElement('div');
+      div.classList.add('tippy-target');
+      div.tabIndex = '-1'; // for initial focus, programmatic focus only
+      div.addEventListener('keydown', (e) => {
+        if (e.key === 'Tab') {
+          const items = this.tippyContent.querySelectorAll('[role="menuitem"]');
+          if (e.shiftKey) {
+            if (document.activeElement === items[0]) {
+              e.preventDefault();
+              items[items.length - 1].focus();
+            }
+          } else {
+            if (document.activeElement === items[items.length - 1]) {
+              e.preventDefault();
+              items[0].focus();
+            }
+          }
+        } else if (e.key === 'Escape') {
+          e.preventDefault();
+          e.stopPropagation();
+          this.button._tippy.hide();
+          this.button.focus();
+        } else if (e.key === ' ' || e.code === 'Enter') {
+          if (document.activeElement?.matches('[role="menuitem"]')) {
+            e.preventDefault();
+            e.stopPropagation();
+            document.activeElement.click();
+          }
+        } else if (e.key === 'ArrowDown') {
+          if (document.activeElement?.matches('.tippy-target')) {
+            e.preventDefault();
+            e.stopPropagation();
+            document.activeElement.querySelector('[role="menuitem"]:first-of-type').focus();
+          } else if (document.activeElement?.matches('[role="menuitem"]')) {
+            e.preventDefault();
+            e.stopPropagation();
+            document.activeElement.nextElementSibling?.focus();
+          }
+        } else if (e.key === 'ArrowUp') {
+          if (document.activeElement?.matches('.tippy-target')) {
+            e.preventDefault();
+            e.stopPropagation();
+            document.activeElement.querySelector('[role="menuitem"]:last-of-type').focus();
+          } else if (document.activeElement?.matches('[role="menuitem"]')) {
+            e.preventDefault();
+            e.stopPropagation();
+            document.activeElement.previousElementSibling?.focus();
+          }
+        }
+      });
+      this.append(div);
+      this.tippyContent = div;
+    }
+
+    // move items in tippy back into the menu items for subsequent measurement
+    for (const item of this.tippyItems || []) {
+      this.menuItemsEl.append(item);
+    }
+
+    // measure which items are partially outside the element and move them into the button menu
+    this.tippyItems = [];
+    const menuRight = this.offsetLeft + this.offsetWidth;
+    const menuItems = this.menuItemsEl.querySelectorAll('.item');
+    const settingItem = this.menuItemsEl.querySelector('#settings-btn');
+    for (const item of menuItems) {
+      const itemRight = item.offsetLeft + item.offsetWidth;
+      // Width of the settings button plus a small value to get the next item to the left if there is directly one
+      // If no setting button is in the menu the default threshold is 38 - roughly the width of .overflow-menu-button
+      const overflowBtnThreshold = 38;
+      const threshold = settingItem?.offsetWidth ?? overflowBtnThreshold;
+      // If we have a settings item on the right-hand side, we must also check if the first,
+      // possibly overflowing item would still fit on the left-hand side of the overflow menu
+      // If not, it must be added to the array (twice). The duplicate is removed with the shift.
+      if (settingItem && !this.tippyItems?.length && item !== settingItem && menuRight - itemRight < overflowBtnThreshold) {
+        this.tippyItems.push(settingItem);
+      }
+      if (menuRight - itemRight < threshold) {
+        this.tippyItems.push(item);
+      }
+    }
+
+    // Special handling for settings button on right. Only done if a setting item is present
+    if (settingItem) {
+      // If less than 2 items overflow, remove all items (only settings "overflowed" - because it's on the right side)
+      if (this.tippyItems?.length < 2) {
+        this.tippyItems = [];
+      } else {
+        // Remove the first item of the list, because we have always one item more in the array due to the big threshold above
+        this.tippyItems.shift();
+      }
+    }
+
+    // if there are no overflown items, remove any previously created button
+    if (!this.tippyItems?.length) {
+      const btn = this.querySelector('.overflow-menu-button');
+      btn?._tippy?.destroy();
+      btn?.remove();
+      return;
+    }
+
+    // remove aria role from items that moved from tippy to menu
+    for (const item of menuItems) {
+      if (!this.tippyItems.includes(item)) {
+        item.removeAttribute('role');
+      }
+    }
+
+    // move all items that overflow into tippy
+    for (const item of this.tippyItems) {
+      item.setAttribute('role', 'menuitem');
+      this.tippyContent.append(item);
+    }
+
+    // update existing tippy
+    if (this.button?._tippy) {
+      this.button._tippy.setContent(this.tippyContent);
+      return;
+    }
+
+    // create button initially
+    const btn = document.createElement('button');
+    btn.classList.add('overflow-menu-button', 'btn', 'tw-px-2', 'hover:tw-text-text-dark');
+    btn.setAttribute('aria-label', window.config.i18n.more_items);
+    btn.innerHTML = octiconKebabHorizontal;
+    this.append(btn);
+    this.button = btn;
+
+    createTippy(btn, {
+      trigger: 'click',
+      hideOnClick: true,
+      interactive: true,
+      placement: 'bottom-end',
+      role: 'menu',
+      content: this.tippyContent,
+      onShow: () => { // FIXME: onShown doesn't work (never be called)
+        setTimeout(() => {
+          this.tippyContent.focus();
+        }, 0);
+      },
+    });
+  });
+
+  init() {
+    // for horizontal menus where fomantic boldens active items, prevent this bold text from
+    // enlarging the menu's active item replacing the text node with a div that renders a
+    // invisible pseudo-element that enlarges the box.
+    if (this.matches('.ui.secondary.pointing.menu, .ui.tabular.menu')) {
+      for (const item of this.querySelectorAll('.item')) {
+        for (const child of item.childNodes) {
+          if (child.nodeType === Node.TEXT_NODE) {
+            const text = child.textContent.trim(); // whitespace is insignificant inside flexbox
+            if (!text) continue;
+            const span = document.createElement('span');
+            span.classList.add('resize-for-semibold');
+            span.setAttribute('data-text', text);
+            span.textContent = text;
+            child.replaceWith(span);
+          }
+        }
+      }
+    }
+
+    // ResizeObserver triggers on initial render, so we don't manually call `updateItems` here which
+    // also avoids a full-page FOUC in Firefox that happens when `updateItems` is called too soon.
+    this.resizeObserver = new ResizeObserver((entries) => {
+      for (const entry of entries) {
+        const newWidth = entry.contentBoxSize[0].inlineSize;
+        if (newWidth !== this.lastWidth) {
+          requestAnimationFrame(() => {
+            this.updateItems();
+          });
+          this.lastWidth = newWidth;
+        }
+      }
+    });
+    this.resizeObserver.observe(this);
+  }
+
+  connectedCallback() {
+    this.setAttribute('role', 'navigation');
+
+    // check whether the mandatory `.overflow-menu-items` element is present initially which happens
+    // with Vue which renders differently than browsers. If it's not there, like in the case of browser
+    // template rendering, wait for its addition.
+    // The eslint rule is not sophisticated enough or aware of this problem, see
+    // https://github.com/43081j/eslint-plugin-wc/pull/130
+    const menuItemsEl = this.querySelector('.overflow-menu-items'); // eslint-disable-line wc/no-child-traversal-in-connectedcallback
+    if (menuItemsEl) {
+      this.menuItemsEl = menuItemsEl;
+      this.init();
+    } else {
+      this.mutationObserver = new MutationObserver((mutations) => {
+        for (const mutation of mutations) {
+          for (const node of mutation.addedNodes) {
+            if (!isDocumentFragmentOrElementNode(node)) continue;
+            if (node.classList.contains('overflow-menu-items')) {
+              this.menuItemsEl = node;
+              this.mutationObserver?.disconnect();
+              this.init();
+            }
+          }
+        }
+      });
+      this.mutationObserver.observe(this, {childList: true});
+    }
+  }
+
+  disconnectedCallback() {
+    this.mutationObserver?.disconnect();
+    this.resizeObserver?.disconnect();
+  }
+});
diff --git a/web_src/js/webcomponents/polyfills.js b/web_src/js/webcomponents/polyfills.js
new file mode 100644
index 00000000..38f50fa0
--- /dev/null
+++ b/web_src/js/webcomponents/polyfills.js
@@ -0,0 +1,17 @@
+try {
+  // some browsers like PaleMoon don't have full support for Intl.NumberFormat, so do the minimum polyfill to support "relative-time-element"
+  // https://repo.palemoon.org/MoonchildProductions/UXP/issues/2289
+  new Intl.NumberFormat('en', {style: 'unit', unit: 'minute'}).format(1);
+} catch {
+  const intlNumberFormat = Intl.NumberFormat;
+  Intl.NumberFormat = function(locales, options) {
+    if (options.style === 'unit') {
+      return {
+        format(value) {
+          return ` ${value} ${options.unit}`;
+        },
+      };
+    }
+    return intlNumberFormat(locales, options);
+  };
+}