Layer.Layer<Dispatcher, never, never>Provides the Dispatcher service using a scoped Undici Agent.
export const const layerDispatcher: Layer.Layer<Dispatcher>const layerDispatcher: {
build: (memoMap: MemoMap, scope: Scope.Scope) => Effect<Context.Context<Dispatcher>, never, never>;
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; <…;
}
Provides the Dispatcher service using a scoped Undici Agent.
layerDispatcher: import LayerLayer.interface Layer<in ROut, out E = never, out RIn = never>A Layer describes how to build one or more services for dependency injection.
When to use
Use to model construction of application services for dependency injection,
especially when services have dependencies, can fail during construction, or
need scoped setup and release.
Details
A Layer<ROut, E, RIn> represents ROut as the services this layer
provides, E as the possible errors during layer construction, and RIn as
the services this layer requires as dependencies.
Layer<class Dispatcherclass Dispatcher {
Service: Service;
key: Identifier;
}
Service tag for the Undici Dispatcher used by the Undici-backed HTTP
client.
Dispatcher> = import LayerLayer.const effect: {
<I, S>(service: Context.Key<I, S>): <E, R>(
effect: Effect<S, E, R>
) => Layer<I, E, Exclude<R, Scope.Scope>>
<I, S, E, R>(
service: Context.Key<I, S>,
effect: Effect<Types.NoInfer<S>, E, R>
): Layer<I, E, Exclude<R, Scope.Scope>>
}
Constructs a layer from an effect that produces a single service.
When to use
Use when you need to construct a Layer-provided service with an Effect,
dependencies, or scoped resource acquisition.
Details
This allows you to create a Layer from an Effect that produces a service.
The Effect is executed in the scope of the layer, allowing for proper
resource management.
Example (Creating a layer from an effect)
import { Context, Effect, Layer } from "effect"
class Database extends Context.Service<Database, {
readonly query: (sql: string) => Effect.Effect<string>
}>()("Database") {}
const layer = Layer.effect(Database,
Effect.sync(() => ({
query: (sql: string) => Effect.succeed(`Query: ${sql}`)
}))
)
effect(class Dispatcherclass Dispatcher {
key: Identifier;
of: (this: void, self: Undici.Dispatcher) => Undici.Dispatcher;
context: (self: Undici.Dispatcher) => Context.Context<Dispatcher>;
use: (f: (service: Undici.Dispatcher) => Effect.Effect<A, E, R>) => Effect.Effect<A, E, Dispatcher | R>;
useSync: (f: (service: Undici.Dispatcher) => A) => Effect.Effect<A, never, Dispatcher>;
Identifier: Identifier;
Service: Shape;
stack: string | undefined;
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; <…;
toString: () => string;
toJSON: () => unknown;
}
Service tag for the Undici Dispatcher used by the Undici-backed HTTP
client.
Dispatcher)(const makeDispatcher: Effect.Effect<
Undici.Dispatcher,
never,
Scope.Scope
>
const makeDispatcher: {
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; <…;
toString: () => string;
toJSON: () => unknown;
}
Acquires a new Undici Agent dispatcher and destroys it when the enclosing
scope is finalized.
makeDispatcher)