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/** * @since 2.0.0 */ import * as internal from "./internal/groupBy.js" import type { Pipeable } from "./Pipeable.js" import type { Predicate } from "./Predicate.js" import type * as Queue from "./Queue.js" import type * as Stream from "./Stream.js" import type * as Take from "./Take.js" import type { Covariant, NoInfer } from "./Types.js" /** * @since 2.0.0 * @category symbols */ export const GroupByTypeId: unique symbol = internal.GroupByTypeId /** * @since 2.0.0 * @category symbols */ export type GroupByTypeId = typeof GroupByTypeId /** * Representation of a grouped stream. This allows to filter which groups will * be processed. Once this is applied all groups will be processed in parallel * and the results will be merged in arbitrary order. * * @since 2.0.0 * @category models */ export interface GroupBy<out K, out V, out E = never, out R = never> extends GroupBy.Variance<K, V, E, R>, Pipeable { readonly grouped: Stream.Stream<readonly [K, Queue.Dequeue<Take.Take<V, E>>], E, R> } /** * @since 2.0.0 */ export declare namespace GroupBy { /** * @since 2.0.0 * @category models */ export interface Variance<out K, out V, out E, out R> { readonly [GroupByTypeId]: { readonly _K: Covariant<K> readonly _V: Covariant<V> readonly _E: Covariant<E> readonly _R: Covariant<R> } } } /** * Run the function across all groups, collecting the results in an * arbitrary order. * * @since 2.0.0 * @category destructors */ export const evaluate: { /** * Run the function across all groups, collecting the results in an * arbitrary order. * * @since 2.0.0 * @category destructors */ <K, V, E, A, E2, R2>( f: (key: K, stream: Stream.Stream<V, E, never>) => Stream.Stream<A, E2, R2>, options?: { readonly bufferSize?: number | undefined } | undefined ): <R>(self: GroupBy<K, V, E, R>) => Stream.Stream<A, E | E2, R2 | R> /** * Run the function across all groups, collecting the results in an * arbitrary order. * * @since 2.0.0 * @category destructors */ <K, V, E, R, A, E2, R2>( self: GroupBy<K, V, E, R>, f: (key: K, stream: Stream.Stream<V, E, never>) => Stream.Stream<A, E2, R2>, options?: { readonly bufferSize?: number | undefined } | undefined ): Stream.Stream<A, E | E2, R | R2> } = internal.evaluate /** * Filter the groups to be processed. * * @since 2.0.0 * @category utils */ export const filter: { /** * Filter the groups to be processed. * * @since 2.0.0 * @category utils */ <K>(predicate: Predicate<NoInfer<K>>): <V, E, R>(self: GroupBy<K, V, E, R>) => GroupBy<K, V, E, R> /** * Filter the groups to be processed. * * @since 2.0.0 * @category utils */ <K, V, E, R>(self: GroupBy<K, V, E, R>, predicate: Predicate<K>): GroupBy<K, V, E, R> } = internal.filter /** * Only consider the first `n` groups found in the `Stream`. * * @since 2.0.0 * @category utils */ export const first: { /** * Only consider the first `n` groups found in the `Stream`. * * @since 2.0.0 * @category utils */ (n: number): <K, V, E, R>(self: GroupBy<K, V, E, R>) => GroupBy<K, V, E, R> /** * Only consider the first `n` groups found in the `Stream`. * * @since 2.0.0 * @category utils */ <K, V, E, R>(self: GroupBy<K, V, E, R>, n: number): GroupBy<K, V, E, R> } = internal.first /** * Constructs a `GroupBy` from a `Stream`. * * @since 2.0.0 * @category constructors */ export const make: <K, V, E, R>( grouped: Stream.Stream<readonly [K, Queue.Dequeue<Take.Take<V, E>>], E, R> ) => GroupBy<K, V, E, R> = internal.make