Examine source code of TikTok Live Comment Fix

{
  "manifest_version": 2,
  "name": "TikTok Live Comment Fix",
  "version": "1.0",
  "description": "Fixes the comment input in TikTok live streams for Firefox",
  "permissions": [
    "storage",
    "*://*.tiktok.com/*"
  ],
  "applications": {
    "gecko": {
      "id": "tiktok-comment-fix@firefox.addon"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icons/icon48.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.tiktok.com/*"
      ],
      "js": [
        "browser-polyfill.js",
        "content.js"
      ]
    }
  ],
  "icons": {
    "48": "icons/icon48.png"
  }
}