ManagedRuntime overview
Added in v2.0.0
Table of contents
models
ManagedRuntime (interface)
Signature
export interface ManagedRuntime<in R, out ER> extends Pipeable {
readonly memoMap: Layer.MemoMap
readonly runtimeEffect: Effect.Effect<Runtime.Runtime<R>, ER>
readonly runtime: () => Promise<Runtime.Runtime<R>>
/**
* Executes the effect using the provided Scheduler or using the global
* Scheduler if not provided
*/
readonly runFork: <A, E>(
self: Effect.Effect<A, E, R>,
options?: Runtime.RunForkOptions
) => Fiber.RuntimeFiber<A, E | ER>
/**
* Executes the effect synchronously returning the exit.
*
* This method is effectful and should only be invoked at the edges of your
* program.
*/
readonly runSyncExit: <A, E>(effect: Effect.Effect<A, E, R>) => Exit.Exit<A, ER | E>
/**
* Executes the effect synchronously throwing in case of errors or async boundaries.
*
* This method is effectful and should only be invoked at the edges of your
* program.
*/
readonly runSync: <A, E>(effect: Effect.Effect<A, E, R>) => A
/**
* Executes the effect asynchronously, eventually passing the exit value to
* the specified callback.
*
* This method is effectful and should only be invoked at the edges of your
* program.
*/
readonly runCallback: <A, E>(
effect: Effect.Effect<A, E, R>,
options?: Runtime.RunCallbackOptions<A, E | ER> | undefined
) => Runtime.Cancel<A, E | ER>
/**
* Runs the `Effect`, returning a JavaScript `Promise` that will be resolved
* with the value of the effect once the effect has been executed, or will be
* rejected with the first error or exception throw by the effect.
*
* This method is effectful and should only be used at the edges of your
* program.
*/
readonly runPromise: <A, E>(
effect: Effect.Effect<A, E, R>,
options?: {
readonly signal?: AbortSignal | undefined
}
) => Promise<A>
/**
* Runs the `Effect`, returning a JavaScript `Promise` that will be resolved
* with the `Exit` state of the effect once the effect has been executed.
*
* This method is effectful and should only be used at the edges of your
* program.
*/
readonly runPromiseExit: <A, E>(
effect: Effect.Effect<A, E, R>,
options?: {
readonly signal?: AbortSignal | undefined
}
) => Promise<Exit.Exit<A, ER | E>>
/**
* Dispose of the resources associated with the runtime.
*/
readonly dispose: () => Promise<void>
/**
* Dispose of the resources associated with the runtime.
*/
readonly disposeEffect: Effect.Effect<void, never, never>
}
Added in v2.0.0
runtime class
make
Convert a Layer into an ManagedRuntime, that can be used to run Effect’s using your services.
Signature
export declare const make: <R, E>(
layer: Layer.Layer<R, E, never>,
memoMap?: Layer.MemoMap | undefined
) => ManagedRuntime<R, E>
Example
import { Console, Effect, Layer, ManagedRuntime } from "effect"
class Notifications extends Effect.Tag("Notifications")<
Notifications,
{ readonly notify: (message: string) => Effect.Effect<void> }
>() {
static Live = Layer.succeed(this, { notify: (message) => Console.log(message) })
}
async function main() {
const runtime = ManagedRuntime.make(Notifications.Live)
await runtime.runPromise(Notifications.notify("Hello, world!"))
await runtime.dispose()
}
main()
Added in v2.0.0
utils
ManagedRuntime (namespace)
Added in v3.4.0
Context (type alias)
Signature
export type Context<T extends ManagedRuntime<any, any>> = [T] extends [ManagedRuntime<infer R, infer _E>] ? R : never
Added in v3.4.0
Error (type alias)
Signature
export type Error<T extends ManagedRuntime<any, any>> = [T] extends [ManagedRuntime<infer _R, infer E>] ? E : never
Added in v3.4.0