Examine source code of Click Repeater

{
  "manifest_version": 3,
  "default_locale": "en",
  "name": "Click Repeater",
  "description": "__MSG_extDescription__",
  "version": "1.4.1",
  "background": {
    "service_worker": "app/background/main.js",
    "type": "module",
    "scripts": [
      "app/background/main.js"
    ]
  },
  "action": {
    "default_title": "Click Repeater",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "permissions": [
    "storage",
    "scripting",
    "activeTab",
    "contextMenus"
  ],
  "commands": {
    "clicks-prefix": {
      "description": "__MSG_commandRunDefaultClick__"
    }
  },
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "contact@md2it.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}