TypeScript Validator

About the tool

TypeScript type and interface definitions are a way to logically represent the data model of hierarchical data structures. This app parses the TypeScript code and uses the extracted constraints to validate the input JSON.

Demo

TypeScript

export type Author = {
  name: string;
  books?: Book[];
};

export type Book = {
  title: string;
  author: Author;
};1
export type Author = {
2
  name: string;
3
  books?: Book[];
4
};
5

6
export type Book = {
7
  title: string;
8
  author: Author;
9
};

JSON instance

{
  "title": "Harry Potter and the Chamber of Secrets",
  "author": {
    "name": "J.K. Rowling"
  }
}1
{
2
  "title": "Harry Potter and the Chamber of Secrets",
3
  "author": {
4
    "name": "J.K. Rowling"
5
  }
6
}

JSON root type

Validation result

No errors

TypeScript Validator

About the tool

Demo

See also