Examine source code of Context Web Search

{
  "manifest_version" : 2 ,
  "name" : "__MSG_extensionName__" ,
  "version" : "3",
  "description" : "__MSG_extensionDescription__" ,
  "author": "Guido Berhoerster",
  "homepage_url" : "https://code.guido-berhoerster.org/addons/firefox-addons/context-web-search/",
  "default_locale" : "en" ,
  "applications": {
    "gecko": {
      "id": "context-web-search@code.guido-berhoerster.org",
      "strict_min_version": "63.0"
    }
  },
  "icons" : {
    "48" : "icons/context-web-search-48.png",
    "96" : "icons/context-web-search-96.png"
  },
  "permissions" : [
    "menus" ,
    "search" ,
    "cookies" 
  ],
  "background" : {
    "scripts" : [
      "background.js" 
    ]
  }
}