Examine source code of Zipwhip Extension

{
  "name": "Zipwhip Extension",
  "short_name": "Zipwhip",
  "description": "Text from any CRM or web app without disrupting your workflow",
  "version": "1.1.0",
  "permissions": [
    "contextMenus",
    "activeTab",
    "storage",
    "notifications"
  ],
  "background": {
    "persistent": true,
    "scripts": [
      "lib/jquery-3.4.1.min.js",
      "config.js",
      "background.js"
    ]
  },
  "browser_action": {
    "default_title": "Zipwhip",
    "default_icon": "icons/icon128-unauth.png"
  },
  "content_scripts": [
    {
      "all_frames": true,
      "matches": [
        "*://*/*"
      ],
      "js": [
        "lib/jquery-3.4.1.min.js",
        "lib/rotate.js",
        "lib/libphonenumber-js.min.js",
        "config.js",
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    },
    {
      "all_frames": true,
      "matches": [
        "*://*/*"
      ],
      "js": [
        "config.js",
        "self-script.js"
      ],
      "run_at": "document_start"
    }
  ],
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "web_accessible_resources": [
    "*.png",
    "*.css",
    "*.js",
    "*.html"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "browser-extension@zipwhip.com",
      "strict_min_version": "42.0"
    }
  },
  "manifest_version": 2
}