graphql/subscription/mapAsyncIterator.d.ts

A Query Language and Runtime which can target any service.

import { PromiseOrValue } from '../jsutils/PromiseOrValue';

/**
 * Given an AsyncIterable and a callback function, return an AsyncIterator
 * which produces values mapped via calling the callback function.
 */
export default function mapAsyncIterator<T, U>(
  iterable: AsyncIterable<T>,
  callback: (arg: T) => PromiseOrValue<U>,
  rejectCallback?: (arg: any) => PromiseOrValue<U>,
): any; // TS_SPECIFIC: es2018.asyncgenerator requires typescript@3.6