Examine source code of CustomHits Surf Extension

{
  "name": "CustomHits Surf Extension",
  "version": "1.0.4",
  "manifest_version": 3,
  "description": "Official CustomHits.net Surf Extension - The easiest way to earn Traffic Minutes.",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "author": "contact@customhits.net",
  "permissions": [
    "storage",
    "alarms"
  ],
  "background": {
    "scripts": [
      "lib/browser-polyfill.js",
      "lib/storage.js",
      "lib/background.js"
    ]
  },
  "action": {
    "default_popup": "popup/popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "https://customhits.net/?page=earn&connect"
      ],
      "js": [
        "lib/browser-polyfill.js",
        "lib/connection.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "com.customhits.surfextension@customhits.net",
      "strict_min_version": "109.0"
    }
  }
}