Initial commit: Developer Tools MVP with visual editor

- Complete React app with 7 developer tools
- JSON Tool with visual structured editor
- Serialize Tool with visual structured editor
- URL, Base64, CSV/JSON, Beautifier, Diff tools
- Responsive navigation with dropdown menu
- Dark/light mode toggle
- Mobile-responsive design with sticky header
- All tools working with copy/paste functionality

node_modules/workbox-precaching/utils/removeIgnoredSearchParams.js

@@ -0,0 +1,30 @@
+/*
+  Copyright 2018 Google LLC
+
+  Use of this source code is governed by an MIT-style
+  license that can be found in the LICENSE file or at
+  https://opensource.org/licenses/MIT.
+*/
+import '../_version.js';
+/**
+ * Removes any URL search parameters that should be ignored.
+ *
+ * @param {URL} urlObject The original URL.
+ * @param {Array<RegExp>} ignoreURLParametersMatching RegExps to test against
+ * each search parameter name. Matches mean that the search parameter should be
+ * ignored.
+ * @return {URL} The URL with any ignored search parameters removed.
+ *
+ * @private
+ * @memberof workbox-precaching
+ */
+export function removeIgnoredSearchParams(urlObject, ignoreURLParametersMatching = []) {
+    // Convert the iterable into an array at the start of the loop to make sure
+    // deletion doesn't mess up iteration.
+    for (const paramName of [...urlObject.searchParams.keys()]) {
+        if (ignoreURLParametersMatching.some((regExp) => regExp.test(paramName))) {
+            urlObject.searchParams.delete(paramName);
+        }
+    }
+    return urlObject;
+}