1 files changed, 105 insertions, 0 deletions
diff --git a/build/build-plugins.mjs b/build/build-plugins.mjs
new file mode 100644
index 0000000..77e6307
--- /dev/null
+++ b/build/build-plugins.mjs
@@ -0,0 +1,105 @@
+#!/usr/bin/env node
+
+/*!
+ * Script to build our plugins to use them separately.
+ * Copyright 2020-2023 The Bootstrap Authors
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+ */
+
+import path from 'node:path'
+import { fileURLToPath } from 'node:url'
+import { babel } from '@rollup/plugin-babel'
+import globby from 'globby'
+import { rollup } from 'rollup'
+import banner from './banner.mjs'
+
+const __filename = fileURLToPath(import.meta.url)
+const __dirname = path.dirname(fileURLToPath(import.meta.url))
+
+const sourcePath = path.resolve(__dirname, '../js/src/').replace(/\\/g, '/')
+const jsFiles = globby.sync(`${sourcePath}/**/*.js`)
+
+// Array which holds the resolved plugins
+const resolvedPlugins = []
+
+// Trims the "js" extension and uppercases => first letter, hyphens, backslashes & slashes
+const filenameToEntity = filename => filename.replace('.js', '')
+  .replace(/(?:^|-|\/|\\)[a-z]/g, str => str.slice(-1).toUpperCase())
+
+for (const file of jsFiles) {
+  resolvedPlugins.push({
+    src: file,
+    dist: file.replace('src', 'dist'),
+    fileName: path.basename(file),
+    className: filenameToEntity(path.basename(file))
+    // safeClassName: filenameToEntity(path.relative(sourcePath, file))
+  })
+}
+
+const build = async plugin => {
+  const globals = {}
+
+  const bundle = await rollup({
+    input: plugin.src,
+    plugins: [
+      babel({
+        // Only transpile our source code
+        exclude: 'node_modules/**',
+        // Include the helpers in each file, at most one copy of each
+        babelHelpers: 'bundled'
+      })
+    ],
+    external(source) {
+      // Pattern to identify local files
+      const pattern = /^(\.{1,2})\//
+
+      // It's not a local file, e.g a Node.js package
+      if (!pattern.test(source)) {
+        globals[source] = source
+        return true
+      }
+
+      const usedPlugin = resolvedPlugins.find(plugin => {
+        return plugin.src.includes(source.replace(pattern, ''))
+      })
+
+      if (!usedPlugin) {
+        throw new Error(`Source ${source} is not mapped!`)
+      }
+
+      // We can change `Index` with `UtilIndex` etc if we use
+      // `safeClassName` instead of `className` everywhere
+      globals[path.normalize(usedPlugin.src)] = usedPlugin.className
+      return true
+    }
+  })
+
+  await bundle.write({
+    banner: banner(plugin.fileName),
+    format: 'umd',
+    name: plugin.className,
+    sourcemap: true,
+    globals,
+    generatedCode: 'es2015',
+    file: plugin.dist
+  })
+
+  console.log(`Built ${plugin.className}`)
+}
+
+(async () => {
+  try {
+    const basename = path.basename(__filename)
+    const timeLabel = `[${basename}] finished`
+
+    console.log('Building individual plugins...')
+    console.time(timeLabel)
+
+    await Promise.all(Object.values(resolvedPlugins).map(plugin => build(plugin)))
+
+    console.timeEnd(timeLabel)
+  } catch (error) {
+    console.error(error)
+    process.exit(1)
+  }
+})()