import { type KeepInitialValueOperator, type Observable } from '../types/index.mjs';
/**
 * Buffers values from the source observable and emits them along with the parent value
 * when the parent emits. The buffer is cleared after each emission.
 *
 * @template A - The type of values from the parent observable
 * @template B - The type of values from the source observable
 * @param observable - The observable whose values will be buffered
 * @returns An operator that emits tuples of [parentValue, bufferedValues]
 *
 * @example
 * ```ts
 * //  Timeline:
 * //
 * //  data$       d1    d2    d3    d4    d5    d6    d7    d8
 * //  trigger$                T1                T2                T3
 * //  result$                 [T1,[d1,d2,d3]]   [T2,[d4,d5,d6]]   [T3,[d7,d8]]
 * //
 * //  Explanation:
 * //  - withBufferedFrom collects values from the source observable
 * //  - When the trigger emits, it emits a tuple of [triggerValue, bufferedValues]
 * //  - Buffer is cleared after each emission
 * //  - Useful for batching data collection triggered by events
 *
 * const data$ = source<string>();
 *
 * const trigger$ = source<number>();
 *
 * const result$ = trigger$.pipe(withBufferedFrom(data$));
 *
 * const valueHistory: (readonly [number, readonly string[]])[] = [];
 *
 * result$.subscribe(([triggerValue, bufferedData]) => {
 *   valueHistory.push([triggerValue, bufferedData]);
 * });
 *
 * data$.next('A');
 *
 * data$.next('B');
 *
 * trigger$.next(1);
 *
 * assert.deepStrictEqual(valueHistory, [[1, ['A', 'B']]]);
 *
 * data$.next('C');
 *
 * trigger$.next(2);
 *
 * assert.deepStrictEqual(valueHistory, [
 *   [1, ['A', 'B']],
 *   [2, ['C']],
 * ]);
 * ```
 */
export declare const withBufferedFrom: <A, B>(observable: Observable<B>) => KeepInitialValueOperator<A, readonly [A, readonly B[]]>;
/**
 * Alias for `withBufferedFrom`.
 * @see withBufferedFrom
 */
export declare const withBuffered: <A, B>(observable: Observable<B>) => KeepInitialValueOperator<A, readonly [A, readonly B[]]>;
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