Function cause

packages/effect/test/Effect/error-handling.test.ts:522–524

(effect: Effect.Effect<never, E, R>)

  it.effect("no information is lost during composition", () =>
    Effect.gen(function*() {
      const cause = <R, E>(effect: Effect.Effect<never, E, R>): Effect.Effect<Cause.Cause<E>, never, R> => {
        return Effect.cause(effect)
      }
      const expectedCause = Cause.fail("oh no")
      const result = yield* (cause(pipe(Effect.failCause(expectedCause), Effect.sandbox, Effect.unsandbox)))
      deepStrictEqual(result, expectedCause)