method StreamClass.tap
Private
StreamClass.tap<S>(
source: Source<S>,
fn: (
value: Exclude<S, AnyFailure>,
index: number
) => void | PromiseLike<void>
): StreamClass<Exclude<S, AnyFailure>, Extract<S, AnyFailure>>

StreamClass#tap as a static: Stream.tap(source, …) is Stream.from(source).tap(…).

await Stream.tap([1, 2], () => {}).collect(); // [1, 2]

Type Parameters

Parameters

source: Source<S>
fn: (
value: Exclude<S, AnyFailure>,
index: number
) => void | PromiseLike<void>

Return Type

StreamClass<Exclude<S, AnyFailure>, Extract<S, AnyFailure>>

Usage

import { StreamClass } from "lib/stream/stream.ts";