Examine source code of TikTok Pro Tools

{
  "manifest_version": 2,
  "name": "TikTok Pro Tools",
  "version": "1.3.0",
  "description": "TikTok Pro Tools — Playback speed, EQ, Download, Shop unlock, Keyword block",
  "browser_specific_settings": {
    "gecko": {
      "id": "tiktok-pro-tools@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "permissions": [
    "*://www.tiktok.com/*",
    "*://*.tiktok.com/*",
    "https://tikwm.com/*",
    "storage",
    "tabs",
    "downloads",
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.tiktok.com/*",
        "*://*.tiktok.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_end"
    }
  ],
  "web_accessible_resources": [
    "hook.js"
  ]
}