Examine source code of Send to Telegram

{
  "name": "Send to Telegram",
  "version": "1.2.0",
  "description": "A browser extension to send selected contents on web pages to Telegram via Telegram Bot API.",
  "permissions": [
    "contextMenus",
    "storage",
    "activeTab"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "./background.js",
    "type": "module"
  },
  "icons": {
    "16": "./assets/logo/16.png",
    "32": "./assets/logo/32.png",
    "48": "./assets/logo/48.png",
    "128": "./assets/logo/128.png"
  },
  "action": {
    "default_icon": {
      "16": "./assets/logo/16.png",
      "32": "./assets/logo/32.png"
    },
    "default_title": "Send to Telegram",
    "default_popup": "./pages/home.html"
  },
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "send-to-telegram@md-bz"
    }
  }
}