Examine source code of PoE Overlay Sync

{
  "name": "PoE Overlay Sync",
  "description": "Sync your Path of Exile session with PoE Overlay",
  "version": "0.0.1.1",
  "manifest_version": 3,
  "background": {
    "service_worker": "/dist/background.js",
    "scripts": [
      "/dist/background.js"
    ]
  },
  "permissions": [
    "cookies"
  ],
  "host_permissions": [
    "https://www.poeoverlay.com/*",
    "https://*.pathofexile.com/*",
    "https://poe.kakaogames.com/*",
    "https://pathofexile.tw/*",
    "https://poe.game.qq.com/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://www.poeoverlay.com/*"
      ],
      "js": [
        "/dist/bridge.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_title": "Sync Session with PoE Overlay"
  },
  "icons": {
    "16": "/resources/icon_16.png",
    "32": "/resources/icon_32.png",
    "48": "/resources/icon_48.png",
    "128": "/resources/icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sync@poeoverlay.com"
    }
  }
}