<E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(
self: Stream<A, E, R>
) => Stream<A | A2, E | E2, R | R2>
<A, E, R, A2, E2, R2>(
self: Stream<A, E, R>,
orElse: LazyArg<Stream<A2, E2, R2>>
): Stream<A | A2, E | E2, R | R2>Switches to a fallback stream if this stream is empty.
Example (Switching on empty streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
const values = yield* Stream.empty.pipe(
Stream.orElseIfEmpty(() => Stream.make(1, 2)),
Stream.runCollect
)
yield* Console.log(values)
})
Effect.runPromise(program)
// Output: [ 1, 2 ]export const const orElseIfEmpty: {
<E, A2, E2, R2>(
orElse: LazyArg<Stream<A2, E2, R2>>
): <A, R>(
self: Stream<A, E, R>
) => Stream<A | A2, E | E2, R | R2>
<A, E, R, A2, E2, R2>(
self: Stream<A, E, R>,
orElse: LazyArg<Stream<A2, E2, R2>>
): Stream<A | A2, E | E2, R | R2>
}
Switches to a fallback stream if this stream is empty.
Example (Switching on empty streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
const values = yield* Stream.empty.pipe(
Stream.orElseIfEmpty(() => Stream.make(1, 2)),
Stream.runCollect
)
yield* Console.log(values)
})
Effect.runPromise(program)
// Output: [ 1, 2 ]
orElseIfEmpty: {
<function (type parameter) E in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>E, function (type parameter) A2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>R2>(
orElse: LazyArg<Stream<A2, E2, R2>>orElse: type LazyArg<A> = () => AA zero-argument function that produces a value when invoked.
When to use
Use to type a lazy value provider that should not run until called.
Example (Creating a lazy argument)
import { Function } from "effect"
const constNull: Function.LazyArg<null> = Function.constant(null)
LazyArg<interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>R2>>
): <function (type parameter) A in <A, R>(self: Stream<A, E, R>): Stream<A | A2, E | E2, R | R2>A, function (type parameter) R in <A, R>(self: Stream<A, E, R>): Stream<A | A2, E | E2, R | R2>R>(self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, R>(self: Stream<A, E, R>): Stream<A | A2, E | E2, R | R2>A, function (type parameter) E in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>E, function (type parameter) R in <A, R>(self: Stream<A, E, R>): Stream<A | A2, E | E2, R | R2>R>) => interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, R>(self: Stream<A, E, R>): Stream<A | A2, E | E2, R | R2>A | function (type parameter) A2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>E | function (type parameter) E2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R in <A, R>(self: Stream<A, E, R>): Stream<A | A2, E | E2, R | R2>R | function (type parameter) R2 in <E, A2, E2, R2>(orElse: LazyArg<Stream<A2, E2, R2>>): <A, R>(self: Stream<A, E, R>) => Stream<A | A2, E | E2, R | R2>R2>
<function (type parameter) A in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A, function (type parameter) E in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E, function (type parameter) R in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R, function (type parameter) A2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R2>(
self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A, function (type parameter) E in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E, function (type parameter) R in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R>,
orElse: LazyArg<Stream<A2, E2, R2>>orElse: type LazyArg<A> = () => AA zero-argument function that produces a value when invoked.
When to use
Use to type a lazy value provider that should not run until called.
Example (Creating a lazy argument)
import { Function } from "effect"
const constNull: Function.LazyArg<null> = Function.constant(null)
LazyArg<interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R2>>
): interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A | function (type parameter) A2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E | function (type parameter) E2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R | function (type parameter) R2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R2>
} = dual<(...args: Array<any>) => any, <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>) => Stream<A | A2, E | E2, R | R2>>(arity: 2, body: <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>) => Stream<A | A2, E | E2, R | R2>): ((...args: Array<any>) => any) & (<A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>) => Stream<A | A2, E | E2, R | R2>) (+1 overload)Creates a function that can be called in data-first style or data-last
(pipe-friendly) style.
When to use
Use to expose one implementation through both direct and pipe-friendly
call styles.
Details
Pass either the arity of the uncurried function or a predicate that decides
whether the current call is data-first. Arity is the common case. Use a
predicate when optional arguments make arity ambiguous.
Example (Selecting data-first or data-last style by arity)
import { Function, pipe } from "effect"
const sum = Function.dual<
(that: number) => (self: number) => number,
(self: number, that: number) => number
>(2, (self, that) => self + that)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
Example (Defining overloads with call signatures)
import { Function, pipe } from "effect"
const sum: {
(that: number): (self: number) => number
(self: number, that: number): number
} = Function.dual(2, (self: number, that: number): number => self + that)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
Example (Selecting data-first or data-last style with a predicate)
import { Function, pipe } from "effect"
const sum = Function.dual<
(that: number) => (self: number) => number,
(self: number, that: number) => number
>(
(args) => args.length === 2,
(self, that) => self + that
)
console.log(sum(2, 3)) // 5
console.log(pipe(2, sum(3))) // 5
dual(2, <function (type parameter) A in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A, function (type parameter) E in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E, function (type parameter) R in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R, function (type parameter) A2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R2>(
self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A, function (type parameter) E in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E, function (type parameter) R in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R>,
orElse: LazyArg<Stream<A2, E2, R2>>orElse: type LazyArg<A> = () => AA zero-argument function that produces a value when invoked.
When to use
Use to type a lazy value provider that should not run until called.
Example (Creating a lazy argument)
import { Function } from "effect"
const constNull: Function.LazyArg<null> = Function.constant(null)
LazyArg<interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R2>>
): interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A | function (type parameter) A2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>A2, function (type parameter) E in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E | function (type parameter) E2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>E2, function (type parameter) R in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R | function (type parameter) R2 in <A, E, R, A2, E2, R2>(self: Stream<A, E, R>, orElse: LazyArg<Stream<A2, E2, R2>>): Stream<A | A2, E | E2, R | R2>R2> =>
const fromChannel: <
Arr extends Arr.NonEmptyReadonlyArray<any>,
E,
R
>(
channel: Channel.Channel<
Arr,
E,
void,
unknown,
unknown,
unknown,
R
>
) => Stream<
Arr extends Arr.NonEmptyReadonlyArray<infer A>
? A
: never,
E,
R
>
Creates a stream from a array-emitting Channel.
Example (Creating a stream from an array-emitting channel)
import { Channel, Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
const channel = Channel.succeed([1, 2, 3] as const)
const stream = Stream.fromChannel(channel)
const result = yield* Stream.runCollect(stream)
yield* Console.log(result)
})
// Output: [ 1, 2, 3 ]
fromChannel(import ChannelChannel.const orElseIfEmpty: {
<
OutDone,
OutElem1,
OutErr1,
OutDone1,
InElem1,
InErr1,
InDone1,
Env1
>(
f: (
leftover: Types.NoInfer<OutDone>
) => Channel<
OutElem1,
OutErr1,
OutDone1,
InElem1,
InErr1,
InDone1,
Env1
>
): <
OutElem,
OutErr,
InElem,
InErr,
InDone,
Env
>(
self: Channel<
OutElem,
OutErr,
OutDone,
InElem,
InErr,
InDone,
Env
>
) => Channel<
OutElem | OutElem1,
OutErr1 | OutErr,
OutDone | OutDone1,
InElem & InElem1,
InErr & InErr1,
InDone & InDone1,
Env1 | Env
>
<
OutElem,
OutErr,
OutDone,
InElem,
InErr,
InDone,
Env,
OutElem1,
OutErr1,
OutDone1,
InElem1,
InErr1,
InDone1,
Env1
>(
self: Channel<
OutElem,
OutErr,
OutDone,
InElem,
InErr,
InDone,
Env
>,
f: (
leftover: Types.NoInfer<OutDone>
) => Channel<
OutElem1,
OutErr1,
OutDone1,
InElem1,
InErr1,
InDone1,
Env1
>
): Channel<
OutElem | OutElem1,
OutErr1 | OutErr,
OutDone | OutDone1,
InElem & InElem1,
InErr & InErr1,
InDone & InDone1,
Env1 | Env
>
}
self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
Stream<A, E, R>.channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>(property) Stream<A, E, R>.channel: {
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
}
_: void_) => const toChannel: <A, E, R>(
stream: Stream<A, E, R>
) => Channel.Channel<
Arr.NonEmptyReadonlyArray<A>,
E,
void,
unknown,
unknown,
unknown,
R
>
Creates a channel from a stream.
Example (Converting a stream to a channel)
import { Channel, Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
const stream = Stream.make(1, 2, 3)
const channel = Stream.toChannel(stream)
const values = yield* Channel.runCollect(channel)
yield* Console.log(values.flat())
})
Effect.runPromise(program)
// Output: [ 1, 2, 3 ]
toChannel(orElse: LazyArg<Stream<A2, E2, R2>>orElse())
)))