Typescript: defining an object for a json

Question

I need to put this json

"id": "x1",
"severity": 100,
"timestamp": 1599230966,
"attr1": "...",
"attr2": "...",
"origin": [{
    "id": "x3",
    "severity": 75,
    "timestamp": 1599230366,
    "attr1": "...",
    "origin": [{
            "id": "x2",
            "severity": 50,
            "timestamp": 1599229766,
            "attr1": "...",
            "attr2": 555,
            "attr3": "...",
            "origin": []
        },
        {
            "id": "x1",
            "severity": 25,
            "timestamp": 1599229166,
            "attr1": "...",
            "origin": []
        }
    ]
}]

into an object, and I just don't know how to define the object that is suitable for this json. I've struggled a lot,so please help me. Thank you in advance

Answer 1

You need to create an interface and assign it to the result.

export interface Origin{
  id?: string;
  severity?: number;
  timestamp?: number;
  attr1?: string;
  attr2?: string;
  orginArray: Origin[];
}

in you controller

private origin: Origin;

and in function of return the result

this.origin = result;

// Second option

//main.ts

export interface IOrigin {
      id?: string;
      severity?: number;
      timestamp?: number;
      attr1?: string;
      attr2?: string;
      origin: IOrigin[];
    }

class Origin implements IOrigin {
      id?: string;
      severity?: number;
      timestamp?: number;
      attr1?: string;
      attr2?: string;
      origin: Origin[];
  constructor(values: IOrigin) {
      this.id = values.id;
      // assign all your attributes
      this.origin = values.origin !== undefined ? toOriginList(values.origin) : undefined;
  }
}


function toOriginList(values: IOrigin[]): Origin[] {
    return values.map(tree => new Origin(tree));
}

Hope useful