Examine source code of GameHelper - Tentlan

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "version": "0.1.8resigned1",
  "default_locale": "en",
  "description": "__MSG_appDesc__",
  "author": "tentlan@gamehelper.net",
  "permissions": [
    "webRequest",
    "http://tentlan.gamehelper.net/",
    "https://gamehelper.net/",
    "tabs"
  ],
  "icons": {
    "16": "gh_16.png",
    "32": "gh_32.png",
    "48": "gh_48.png",
    "128": "gh_128.png"
  },
  "background": {
    "persistent": false,
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.tentlan.com/*"
      ],
      "css": [
        "chromlan.css"
      ],
      "js": [
        "jquery-3.3.1.min.js",
        "parser.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "@gamehelper"
    }
  }
}