Examine source code of net-identity

{
  "manifest_version" : 3 ,
  "name" : "__MSG_extensionName__" ,
  "version" : "1.2.1",
  "description" : "__MSG_extensionDescription__" ,
  "browser_specific_settings": {
    "gecko": {
      "id": "net-identity@jacek4yang.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "locationInfo",
          "authenticationInfo"
        ],
        "optional": [
          "personallyIdentifyingInfo"
        ]
      }
    }
  },
  "icons" : {
    "16" : "icons/icon-16.png",
    "32" : "icons/icon-32.png",
    "48" : "icons/icon-48.png",
    "64" : "icons/icon-64.png",
    "96" : "icons/icon-96.png",
    "128" : "icons/icon-128.png"
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "type" : "module" 
  },
  "action" : {
    "default_title" : "__MSG_extensionName__" ,
    "default_popup" : "popup/popup.html",
    "default_icon" : {
      "16" : "icons/icon-16.png",
      "32" : "icons/icon-32.png"
    }
  },
  "options_ui" : {
    "page": "options/options.html" ,
    "open_in_tab": true
  },
  "permissions" : [
    "proxy" ,
    "storage" ,
    "privacy" ,
    "webRequest" ,
    "webRequestBlocking" 
  ],
  "host_permissions" : [
    "<all_urls>" 
  ],
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "content/bridge.js" 
      ],
      "run_at" : "document_start" ,
      "all_frames" : true ,
      "match_about_blank" : true 
    },
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "content/page-shim.js" 
      ],
      "run_at" : "document_start" ,
      "world" : "MAIN" ,
      "all_frames" : true ,
      "match_about_blank" : true 
    }
  ],
  "homepage_url" : "https://github.com/jacek4yang/net-identity",
  "content_security_policy" : {
    "extension_pages": "default-src 'self'; script-src 'self'; worker-src 'self'; object-src 'none'; connect-src 'self' https://ipwho.is https://tiles.openfreemap.org; img-src 'self' data: blob:; style-src 'self'"
  },
  "default_locale" : "en" 
}