Types · hard

40. Recursive Types

Types that refer to themselves.

Define a `JSONValue` type (primitive | array | object).

Required in your answer: JSONValue[]{ [key: string]: JSONValue }

Transpiled, then run in a sandbox

type JSONValue = string | number | boolean | null | JSONValue[] | { [key: string]: JSONValue };
const data: JSONValue = { a: [1] };

Output appears here.