Examine source code of Copy Fixed Twitter URL

{
  "manifest_version": 2,
  "name": "copy-fixed-twitter-url",
  "description": "Twitter Extensions for adding a new item to share button",
  "version": "0.3.0",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://twitter.com/*",
        "https://x.com/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{04a01f73-b16f-4058-9fc8-223a5633b31a}"
    }
  }
}