loopback/example/todos/todos/config.json

{
  "module": "model",
  "main": "./todos.js",
  "options": {
    "properties": [
      {
        "name": "title",
        "type": "string"
      },
      {
        "name": "done",
        "type": "boolean"
      },
      {
        "name": "order",
        "type": "number"
      }
    ]
  },
  "dependencies": {
    "data-source": "db"
  }
}