Examine source code of Double-click Dictionary

{
  "manifest_version" : 3 ,
  "name" : "Double-click Dictionary",
  "version" : "0.1.0",
  "description" : "See an English definition when you double-click a word.",
  "icons" : {
    "48" : "icons/dictionary.svg",
    "96" : "icons/dictionary.svg"
  },
  "action" : {
    "default_title" : "Double-click Dictionary",
    "default_icon" : "icons/dictionary.svg",
    "default_popup" : "settings.html",
    "default_area": "navbar"
  },
  "permissions" : [
    "storage" 
  ],
  "background" : {
    "scripts" : [
      "background.js" 
    ],
    "type" : "module" 
  },
  "content_scripts" : [
    {
      "matches" : [
        "<all_urls>" 
      ],
      "js" : [
        "content.js" 
      ],
      "css" : [
        "content.css" 
      ],
      "run_at" : "document_idle" 
    }
  ],
  "host_permissions" : [
    "https://doubleclick-dictionary-data.evilwaveforms.workers.dev/*" 
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "doubleclick-dictionary@evilwaveforms",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}