1 files changed, 75 insertions, 0 deletions
diff --git a/devtools/client/debugger/src/utils/url.js b/devtools/client/debugger/src/utils/url.js
new file mode 100644
index 0000000000..2aabc31258
--- /dev/null
+++ b/devtools/client/debugger/src/utils/url.js
@@ -0,0 +1,75 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */
+
+const defaultUrl = {
+  hash: "",
+  host: "",
+  hostname: "",
+  href: "",
+  origin: "null",
+  password: "",
+  path: "",
+  pathname: "",
+  port: "",
+  protocol: "",
+  search: "",
+  // This should be a "URLSearchParams" object
+  searchParams: {},
+  username: "",
+};
+
+const parseCache = new Map();
+export function parse(url) {
+  if (parseCache.has(url)) {
+    return parseCache.get(url);
+  }
+
+  let urlObj;
+  try {
+    urlObj = new URL(url);
+  } catch (err) {
+    urlObj = { ...defaultUrl };
+    // If we're given simply a filename...
+    if (url) {
+      const hashStart = url.indexOf("#");
+      if (hashStart >= 0) {
+        urlObj.hash = url.slice(hashStart);
+        url = url.slice(0, hashStart);
+
+        if (urlObj.hash === "#") {
+          // The standard URL parser does not include the ? unless there are
+          // parameters included in the search value.
+          urlObj.hash = "";
+        }
+      }
+
+      const queryStart = url.indexOf("?");
+      if (queryStart >= 0) {
+        urlObj.search = url.slice(queryStart);
+        url = url.slice(0, queryStart);
+
+        if (urlObj.search === "?") {
+          // The standard URL parser does not include the ? unless there are
+          // parameters included in the search value.
+          urlObj.search = "";
+        }
+      }
+
+      urlObj.pathname = url;
+    }
+  }
+  // When provided a special URL like "webpack:///webpack/foo",
+  // prevents passing the three slashes in the path, and pass only onea.
+  // This will prevent displaying modules in empty-name sub folders.
+  urlObj.pathname = urlObj.pathname.replace(/\/+/, "/");
+  urlObj.path = urlObj.pathname + urlObj.search;
+
+  // Cache the result
+  parseCache.set(url, urlObj);
+  return urlObj;
+}
+
+export function sameOrigin(firstUrl, secondUrl) {
+  return parse(firstUrl).origin == parse(secondUrl).origin;
+}