| import type { PromiseOrValue } from '../jsutils/PromiseOrValue'; |
| /** |
| * Given an AsyncIterable and a callback function, return an AsyncIterator |
| * which produces values mapped via calling the callback function. |
| */ |
| export declare function mapAsyncIterator<T, U, R = undefined>( |
| iterable: AsyncGenerator<T, R, void> | AsyncIterable<T>, |
| callback: (value: T) => PromiseOrValue<U>, |
| ): AsyncGenerator<U, R, void>; |