打字稿：如何为嵌套（嵌套）对象定义接口？

Question

See below my current JSON payload:

{
  "state_1": {
    "date": [
     {
          1000: {
            "size": 3,
            "count": 0
          }
        }
      {
          1001: {
            "size": 3,
            "count": 1

          }
        }
      }
    ]
}

How would I set up the definition of the Example interface to model a type state that has a date which has a list of id (here 1000 and 1001 ) which are a dictionary holding strings size and count .

Answer 1

You can use an index signature to handle unknown key definitions.

interface State {
    date: {
        [id: number]: {
            size: string;
            count: string;
        }
    }[];
}