Examine source code of Header Editor Lite

{
  "name" : "Header Editor Lite",
  "short_name" : "Header Editor Lite",
  "version" : "5.4.3",
  "description" : "__MSG_description__" ,
  "homepage_url" : "https://he.firefoxcn.net",
  "icons" : {
    "128" : "assets/images/128.png"
  },
  "permissions" : [
    "tabs" ,
    "storage" ,
    "unlimitedStorage" ,
    "webRequest" ,
    "webRequestBlocking" ,
    "declarativeNetRequest" 
  ],
  "default_locale" : "en" ,
  "options_ui" : {
    "page": "options.html" ,
    "open_in_tab": true
  },
  "content_scripts" : [
    {
      "matches" : [
        "https://login.microsoftonline.com/common/oauth2/nativeclient*" ,
        "https://ext.firefoxcn.net/login/callback/*" ,
        "https://oauth.yandex.ru/verification_code*" 
      ],
      "run_at" : "document_start" ,
      "js" : [
        "scripts/content-cloud-drive.js" 
      ]
    }
  ],
  "manifest_version" : 3 ,
  "action" : {
    "default_icon" : {
      "128" : "assets/images/128.png"
    },
    "default_title" : "__MSG_extButtonTitle__" ,
    "default_popup" : "popup.html"
  },
  "background" : {
    "scripts" : [
      "scripts/background.js" 
    ]
  },
  "host_permissions" : [
    "*://*/*" ,
    "ws://*/*",
    "wss://*/*",
    "file:///*" 
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "headereditor-v3-amo@addon.firefoxcn.net",
      "strict_min_version": "113.0"
    },
    "gecko_android": {
      "id": "headereditor-v3-amo@addon.firefoxcn.net",
      "strict_min_version": "113.0",
      "min_version": "120.0"
    }
  }
}