Examine source code of Free IRC App MOD

{
  "name": "Free IRC App MOD",
  "version": "1.1",
  "app": {
    "launch": {
      "url": "http://localhost:8080"
    },
    "origins": [
      "http://localhost:8080"
    ]
  },
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "id": "{665f1305-aeed-464c-8c9a-3d4ad6fcb8f6}"
    }
  }
}