Examine source code of ownDictionary

{
  "manifest_version": 3,
  "name": "ownDictionary",
  "version": "1.1.1",
  "description": "Get word definitions and examples on double-click.",
  "permissions": [
    "activeTab",
    "storage",
    "scripting",
    "contextMenus"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_popup": "index.html"
  },
  "background": {
    "scripts": [
      "service-worker-loader.js"
    ],
    "type": "module"
  },
  "content_scripts": [
    {
      "js": [
        "assets/content.js-loader-BMSvaX3v.js"
      ],
      "matches": [
        "<all_urls>"
      ],
      "css": [
        "assets/WordCard-CEDOYZQd.css"
      ]
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "ownDictionary@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "web_accessible_resources": [
    {
      "matches": [
        "<all_urls>"
      ],
      "resources": [
        "assets/WordCard-Cin4DGda.js",
        "assets/helpers-Ui9U7jS5.js",
        "assets/content.js-Dd7VArDE.js"
      ]
    }
  ]
}