JSON → TypeScript

Infer TypeScript interfaces from a JSON sample. Arrays merge element shapes; missing keys become optional.

Root interface name

JSON

TypeScript

export interface RootAddress {
  city: string;
  zip: null;
}

export interface RootScoresItem {
  subject: string;
  score: number;
}

export interface Root {
  id: number;
  name: string;
  active: boolean;
  tags: string[];
  address: RootAddress;
  scores: RootScoresItem[];
}