Examine source code of ShopBestie

{
  "manifest_version": 2,
  "name": "__MSG_appName__",
  "default_locale": "en",
  "description": "__MSG_appDesc__",
  "version": "0.3.3resigned1",
  "short_name": "ShopBestie",
  "browser_action": {
    "default_icon": "src/resources/images/logo-16x16.png",
    "default_popup": "src/popup.html"
  },
  "icons": {
    "16": "./src/resources/images/logo-16x16.png",
    "48": "./src/resources/images/logo-48.png",
    "64": "./src/resources/images/Icon-64.png",
    "128": "./src/resources/images/logo-128x128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*/*"
      ],
      "css": [
        "src/vendor/google-font-lato.css",
        "src/css/content/contentScript.css"
      ],
      "js": [
        "src/js/initExtension.js",
        "src/vendor/jquery-3.3.1.js",
        "src/js/env.js",
        "src/js/utsException.js",
        "src/js/shared/services/interSer.js",
        "src/js/shared/services/utilitySer.js",
        "src/js/shared/services/utsAjaxSer.js",
        "src/js/shared/services/merchantSer.js",
        "src/js/shared/services/localStorageSer.js",
        "src/js/content/contentScript.js"
      ]
    }
  ],
  "background": {
    "scripts": [
      "src/vendor/jquery-3.3.1.js",
      "src/js/initExtension.js",
      "src/js/eventMsg/ustEventMessages.js",
      "src/js/eventMsg/ustMsgRes.js",
      "src/js/utsException.js",
      "src/js/env.js",
      "src/js/shared/services/interSer.js",
      "src/js/shared/services/utilitySer.js",
      "src/js/shared/models/utsIcon.js",
      "src/js/shared/services/utsAjaxSer.js",
      "src/js/shared/services/merchantSer.js",
      "src/js/background/background.js"
    ]
  },
  "web_accessible_resources": [
    "src/resources/images/ustoshop-banner.png",
    "src/resources/images/logo-white.svg",
    "src/autoPopup.html"
  ],
  "permissions": [
    "storage",
    "tabs",
    "activeTab",
    "identity",
    "webRequest",
    "*://*/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{026a18a4-3ccb-4f66-96c8-874214e5466e}"
    }
  }
}