effect-io-ai

Package: effect
Module: FiberMap

FiberMap.getUnsafe

Retrieves a fiber from the FiberMap synchronously.

When to use

Use when synchronous keyed lookup of a fiber in a FiberMap is needed and an Option result is enough outside the Effect workflow.

Example (Retrieving a fiber unsafely)

import { Deferred, Effect, Fiber, FiberMap } from "effect"

const program = Effect.gen(function*() {
  const map = yield* FiberMap.make<string>()
  const deferred = yield* Deferred.make<string>()

  // Add a fiber to the map
  const fiber = yield* Effect.forkChild(Deferred.await(deferred))
  FiberMap.setUnsafe(map, "greeting", fiber)

  // Retrieve the fiber
  const retrieved = FiberMap.getUnsafe(map, "greeting")
  if (retrieved._tag === "Some") {
    yield* Deferred.succeed(deferred, "Hello")

    const result = yield* Fiber.join(retrieved.value)
    console.log(result) // "Hello"
  }
})

Signature

declare const getUnsafe: { <K>(key: K): <A, E>(self: FiberMap<K, A, E>) => Option.Option<Fiber.Fiber<A, E>>; <K, A, E>(self: FiberMap<K, A, E>, key: K): Option.Option<Fiber.Fiber<A, E>>; }

Source

Since v4.0.0