Examine source code of 7TV

{
  "manifest_version": 2,
  "name": "7TV",
  "description": "Improve your viewing experience with 7TV on Twitch & Kick with new features, emotes, vanity and performance.",
  "version": "1.2.0",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "128": "icons/128.png"
  },
  "web_accessible_resources": [
    "site.js",
    "worker.js",
    "paint-transparency-worker.js",
    "assets/site.css"
  ],
  "permissions": [
    "storage",
    "*://*.twitch.tv/*",
    "*://*.kick.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "seventv-next@7tv.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "7TV",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.kick.com/*",
        "*://*.twitch.tv/*"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "css": [
        "content-scripts/content.css"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}