Examine source code of Abadis Lookup

{
  "manifest_version": 2,
  "name": "Abadis Lookup",
  "version": "1.0",
  "description": "Double-click or select any word to see its Persian definition from Abadis.ir",
  "permissions": [
    "activeTab",
    "*://abadis.ir/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "abadis-lookup@amir7698",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "popup.css"
      ]
    }
  ]
}