Function fromTransformBracket

repos/effect/packages/effect/src/Channel.ts:388–406

(
  f: (
    upstream: Pull.Pull<InElem, InErr, InDone>,
    scope: Scope.Scope,
    forkedScope: Scope.Scope
  ) => Effect.Effect<Pull.Pull<OutElem, OutErr, OutDone, EnvX>, EX, Env>
)

 * pulls, but also provides a forked scope that closes when the resulting
 * Channel completes.
 *
 * **When to use**
 *
 * Use when building channels that require scoped resource lifecycle management,
 * providing both the channel scope and a forked scope that automatically closes
 * when the channel completes.
 *
 * @see {@link fromTransform} for a simpler transformation without a forked scope
 * @category constructors
 * @since 4.0.0
 */
export const fromTransformBracket = <OutElem, OutErr, OutDone, InElem, InErr, InDone, EX, EnvX, Env>(
  f: (
    upstream: Pull.Pull<InElem, InErr, InDone>,
    scope: Scope.Scope,
    forkedScope: Scope.Scope
  ) => Effect.Effect<Pull.Pull<OutElem, OutErr, OutDone, EnvX>, EX, Env>
): Channel<OutElem, Pull.ExcludeDone<OutErr> | EX, OutDone, InElem, InErr, InDone, Env | EnvX> =>
  fromTransform(
    Effect.fnUntraced(function*(upstream, scope) {
      const closableScope = Scope.forkUnsafe(scope)
      const onCause = (cause: Cause.Cause<EX | OutErr | Cause.Done<OutDone>>) =>