feat: add Youtube Share Link Sanitizer

README.md

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+# sup-browser-utils
+Browser utility scripts by sup39
+
+## Scripts
+- [Youtube Share Link Sanitizer](./src/youtube-share-link-sanitizer.js): remove tracking parameters from youtube share links

jsconfig.json

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+{
+  "compilerOptions": {
+    "checkJs": true,
+    "strict": true,
+    "target": "es6"
+  }
+}

src/youtube-share-link-sanitizer.js

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+// ==UserScript==
+// @name         Youtube Share Link Sanitizer
+// @namespace    https://forgejo.sup39.dev/sup39/sup-browser-utils/
+// @version      2024-01-30
+// @description  Sanitize Youtube share links
+// @author       sup39
+// @match        https://www.youtube.com/*
+// @grant        none
+// ==/UserScript==
+
+(() => {
+  'use strict';
+  /**
+   * @param {string} selector
+   * @param {Element} root
+   */
+  // https://stackoverflow.com/a/61511955
+  const untilElementLoaded = (selector, root=document.body) => new Promise(resolve => {
+    // resolve immediately if element already exists
+    const elm = root.querySelector(selector);
+    if (elm != null) return resolve(elm);
+    // observe root until element presents
+    const observer = new MutationObserver(() => {
+      const elm = root.querySelector(selector);
+      if (elm != null) {
+        observer.disconnect();
+        resolve(elm);
+      }
+    });
+    observer.observe(root, {
+      childList: true,
+      subtree: true
+    });
+  });
+  /** @param {string} rawUrl */
+  function sanitizeUrl(rawUrl) {
+    const url = new URL(rawUrl);
+    url.search = '';
+    return url.toString();
+  }
+  untilElementLoaded('ytd-popup-container')
+    .then(root => untilElementLoaded('#share-url', root))
+    .then(elm => {
+      elm.value = sanitizeUrl(elm.value);
+      // https://stackoverflow.com/a/72223895
+      const {get, set} = Object.getOwnPropertyDescriptor(HTMLInputElement.prototype, 'value') ?? {};
+      if (get && set) {
+        Object.defineProperty(elm, 'value', {
+          get,
+          set: function(rawUrl) {
+            set.call(this, sanitizeUrl(rawUrl));
+          },
+        });
+      } else {
+        throw new Error('Unexpected error: Cannot get getter and setter of #share-url.value');
+      }
+    });
+})();
+
+/**
+ * This is free and unencumbered software released into the public domain.
+ *
+ * Anyone is free to copy, modify, publish, use, compile, sell, or
+ * distribute this software, either in source code form or as a compiled
+ * binary, for any purpose, commercial or non-commercial, and by any
+ * means.
+ *
+ * In jurisdictions that recognize copyright laws, the author or authors
+ * of this software dedicate any and all copyright interest in the
+ * software to the public domain. We make this dedication for the benefit
+ * of the public at large and to the detriment of our heirs and
+ * successors. We intend this dedication to be an overt act of
+ * relinquishment in perpetuity of all present and future rights to this
+ * software under copyright law.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * For more information, please refer to <https://unlicense.org>
+ */