Examine source code of Improvements for Twitter

{
  "manifest_version": 2,
  "name": "Improvements for Twitter",
  "version": "1.8.0",
  "author": "usy",
  "homepage_url": "https://github.com/usyless/twitter-improvements",
  "description": "Various helpful additions and changes for Twitter",
  "icons": {
    "16": "/icons/icon.svg",
    "32": "/icons/icon.svg",
    "48": "/icons/icon.svg",
    "96": "/icons/icon.svg",
    "128": "/icons/icon.svg"
  },
  "browser_action": {
    "default_icon": "/icons/icon.svg",
    "default_title": "Settings"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{49f6525f-921e-4ff0-804d-a85f95ad3233}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "contextMenus",
    "downloads",
    "clipboardWrite",
    "storage",
    "https://x.com/*",
    "https://video.twimg.com/*",
    "https://pbs.twimg.com/*"
  ],
  "background": {
    "scripts": [
      "/common.js",
      "/background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://x.com/*"
      ],
      "js": [
        "/common.js",
        "/twitter_improvements.js",
        "/element_hiding.js"
      ],
      "css": [
        "/twitter_improvements.css"
      ],
      "run_at": "document_idle"
    },
    {
      "matches": [
        "https://x.com/*"
      ],
      "js": [
        "/fetch-intercept-loader.js"
      ],
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "/settings/settings.html",
    "open_in_tab": true
  },
  "web_accessible_resources": [
    "/fetch-intercept.js"
  ]
}