Examine source code of WHAT

{
  "manifest_version": 3,
  "name": "WHAT",
  "version": "1.0.0",
  "description": "Highlight words and learn their definitions instantly.",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://api.dictionaryapi.dev/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "what-extension@yahyamansoub.dev",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "styles.css"
      ]
    }
  ],
  "action": {
    "default_title": "WHAT",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/what-16.png",
      "32": "icons/what-32.png",
      "48": "icons/what-48.png",
      "128": "icons/what-128.png"
    }
  },
  "icons": {
    "16": "icons/what-16.png",
    "32": "icons/what-32.png",
    "48": "icons/what-48.png",
    "128": "icons/what-128.png"
  }
}