Examine source code of Language Switcher for Microsoft Learn

{
  "manifest_version" : 3 ,
  "name" : "Language Switcher for Microsoft Learn",
  "description" : "A browser extension that rewrites the language code in the URL to navigate between localized Microsoft Learn pages instantly.",
  "version" : "1.8",
  "icons" : {
    "16" : "images/icon16.png",
    "48" : "images/icon48.png",
    "128" : "images/icon128.png"
  },
  "permissions" : [
    "tabs" ,
    "contextMenus" ,
    "storage" 
  ],
  "action" : {
    "default_icon" : {
      "16" : "images/icon16.png",
      "48" : "images/icon48.png",
      "128" : "images/icon128.png"
    },
    "default_title" : "Language Switcher for Microsoft Learn"
  },
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  },
  "options_ui" : {
    "page": "options.html" ,
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{D4640540-6855-11EF-8AEE-44C1A434574D}",
      "strict_min_version": "113.0"
    }
  }
}