@effect-ts/system/_src/Experimental/Stream/Channel/api/zipLeft.ts

Effect-TS is a zero dependency set of libraries to write highly productive, purely functional TypeScript at scale.

// ets_tracing: off

import * as Tp from "../../../../Collections/Immutable/Tuple/index.js"
import type * as C from "../core.js"
import * as Map from "./map.js"
import * as Zip from "./zip.js"

/**
 * Returns a new channel that is the sequential composition of this channel and the specified
 * channel. The returned channel terminates with the terminal value of this channel.
 */
export function zipLeft_<
  Env,
  Env1,
  InErr,
  InErr1,
  InElem,
  InElem1,
  InDone,
  InDone1,
  OutErr,
  OutErr1,
  OutElem,
  OutElem1,
  OutDone,
  OutDone1
>(
  self: C.Channel<Env, InErr, InElem, InDone, OutErr, OutElem, OutDone>,
  that: C.Channel<Env1, InErr1, InElem1, InDone1, OutErr1, OutElem1, OutDone1>
): C.Channel<
  Env & Env1,
  InErr & InErr1,
  InElem & InElem1,
  InDone & InDone1,
  OutErr | OutErr1,
  OutElem | OutElem1,
  OutDone
> {
  return Map.map_(Zip.zip_(self, that), Tp.get(0))
}

/**
 * Returns a new channel that is the sequential composition of this channel and the specified
 * channel. The returned channel terminates with the terminal value of this channel.
 *
 * @ets_data_first zipLeft_
 */
export function zipLeft<Env1, InErr1, InElem1, InDone1, OutErr1, OutElem1, OutDone1>(
  that: C.Channel<Env1, InErr1, InElem1, InDone1, OutErr1, OutElem1, OutDone1>
) {
  return <Env, InErr, InElem, InDone, OutErr, OutElem, OutDone>(
    self: C.Channel<Env, InErr, InElem, InDone, OutErr, OutElem, OutDone>
  ) => zipLeft_(self, that)
}