import { ReadableStreamsChunks } from '@johngw/stream-common/Stream';
/**
 * Combines the source Observable with other Observables to create an Observable
 * whose values are calculated from the latest values of each, only when the source emits.
 *
 * @group Transformers
 * @example
 * ```
 * --a-----b-------c---d---e--
 *
 * withLatestFrom(
 * -----1----2-3-4------------
 * )
 *
 * --------b1------c4--d4--e4-
 * ```
 */
export declare function withLatestFrom<T, RSs extends ReadableStream<unknown>[]>(...inputs: RSs): ReadableWritablePair<[T, ...ReadableStreamsChunks<RSs>], T>;