Messenger™ in Extension

manifest.json

{
  "update_url": "https://clients2.google.com/service/update2/crx",
  "name": "Messenger™ in Extension",
  "version": "1",
  "manifest_version": 3,
  "description": "An easy to use app for messenger",
  "icons": {
    "16": "icons/16.png",
    "32": "icons/32.png",
    "48": "icons/48.png",
    "64": "icons/64.png",
    "128": "icons/128.png"
  },
  "action": {
    "default_title": "Messenger™ in Extension"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "panel/icons/*"
      ],
      "matches": [
        "*://*.messenger.com/*"
      ]
    }
  ],
  "background": {
    "service_worker": "background.js"
  },
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "all_frames": true,
      "css": [
        "style.css"
      ],
      "js": [
        "index.js"
      ],
      "matches": [
        "*://*.messenger.com/*"
      ],
      "run_at": "document_start"
    }
  ]
}