effect-io-ai

Package: effect
Module: Effect

Effect.isFailure

Determines whether an effect fails.

Details

Defects are not converted; if the effect dies, the resulting effect dies too.

Example (Checking whether an effect fails)

import { Console, Effect } from "effect"

const program = Effect.gen(function*() {
  const failed = yield* Effect.isFailure(Effect.fail("Uh oh!"))
  yield* Console.log(failed)
})

Effect.runPromise(program)
// Output: true

Signature

declare const isFailure: <A, E, R>(self: Effect<A, E, R>) => Effect<boolean, never, R>

Source

Since v2.0.0