effect-io-ai

Package: effect
Module: Effect

Effect.serviceOptional

Retrieves a service from the context, throwing an error if it is missing.

Details

This function retrieves a required service from the context. If the service is available, it returns the service. If the service is missing, it throws a NoSuchElementException, which can be handled using Effect’s error-handling mechanisms. This is useful for services that are critical to the execution of your effect.

See

• serviceOption for a version that returns an Option instead of throwing an error.

Signature

declare const serviceOptional: <I, S>(tag: Context.Tag<I, S>) => Effect<S, Cause.NoSuchElementException>

Source

Since v2.0.0