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TypeScript Validator

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

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

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See also

Convert YAML to JSON online.

Convert PLIST files to JSON.

Declaring custom JSX/HTML attributes in TypeScript

How to specify non-standard JSX/HTML attributes in TypeScript?

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Validate JSON against JSON Schema.