Examine source code of gPopDict

{
  "manifest_version": 3,
  "name": "gPopDict",
  "version": "1.0.0",
  "author": "Yasin Amirany",
  "description": "Double-click any word to see its definition from Google. Lightweight popup dictionary with text-to-speech.",
  "browser_specific_settings": {
    "gecko": {
      "id": "gPopDict@amirany.ir",
      "strict_min_version": "145.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ]
  },
  "host_permissions": [
    "https://www.google.com/*"
  ],
  "icons": {
    "48": "icons/icon-48.png",
    "96": "icons/icon-96.png",
    "128": "icons/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "src/popup.js"
      ],
      "css": [
        "src/popup.css"
      ]
    }
  ],
  "options_ui": {
    "page": "src/options.html",
    "open_in_tab": false
  }
}