@cuppachino/type-space/dist/index-of.d.ts

A collection of type utilities for TypeScript.

import type { Indices } from './indices';
import type { UnknownArray } from './unknown-array';
/**
 * Create a union type from the indices of `T`
 *
 * @see {@link Indices}
 * @example
 * ```
 * IndexOf<[1, 2, 3]> // 0 | 1 | 2
 * ```
 */
export type IndexOf<T extends UnknownArray> = Indices<T> extends infer I extends number[] | readonly number[] ? I[number] : never;