Examine source code of Level Maze Game

{
  "name": "Level Maze",
  "short_name": "level-maze",
  "version": "1",
  "description": "A level up maze game that plays in a popup.",
  "icons": {
    "16": "images/logo.png",
    "48": "images/logo.png",
    "128": "images/logo.png"
  },
  "action": {
    "default_icon": "images/logo.png",
    "default_popup": "index.html"
  },
  "permissions": [
    "storage"
  ],
  "manifest_version": 3,
  "browser_specific_settings": {
    "gecko": {
      "id": "{88b9804b-1a7e-4adc-a255-c5f187b83905}"
    }
  }
}