import type { PipeStep } from './pipe$.js';
import type { Deferrable } from './types/inputs/Deferrable.js';
import type { Mutable } from './types/inputs/Mutable.js';
import type { AnySubscribable, SubscribableValue } from './types/inputs/Subscribable.js';
import type { Observable } from './types/outputs/Observable.js';
import type { Ref } from './types/outputs/Ref.js';
import type { Awaitable } from './types/utils.js';
/**
 * Stores origin's emitted data into given reference, to making it deferrable.
 *
 * @since 2.0.0
 */
export declare function store$<O extends StoreOrigin, R extends StoreRef<SubscribableValue<O>>>(ref: R): PipeStep<O, StoreResult<O, R>>;
export type StoreOrigin<D = unknown> = AnySubscribable<D> & Partial<Deferrable<Awaitable<D | undefined>>>;
export type StoreRef<D = unknown> = Deferrable<Awaitable<D | undefined>> & Mutable<D, Awaitable<D>>;
export type StoreResult<O extends StoreOrigin, R extends StoreRef<SubscribableValue<O>>> = Observable<SubscribableValue<O>> & (R extends Deferrable<infer D> ? Ref<D> : unknown);