Examine source code of FunPay Phrase Pal

{
  "manifest_version": 2,
  "name": "FunPay Phrase Pal",
  "version": "2.0",
  "description": "Quick phrases with cloud auto-save, price calculator and RU→EN lot auto-translation for FunPay",
  "author": "accept",
  "permissions": [
    "tabs",
    "storage",
    "alarms",
    "notifications",
    "*://funpay.com/*",
    "https://translate.googleapis.com/*",
    "https://funpaypal.site/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://funpay.com/*"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "funpay-phrase-pal@local-addon.com",
      "data_collection_permissions": {
        "required": [
          "personallyIdentifyingInfo",
          "personalCommunications"
        ]
      }
    }
  }
}