API ClientsTypeScript SDKAPI ReferenceFunctional Programming (Technical Preview)Type AliasesTaskEither<E, A>Version: 8.9On this pageType Alias: TaskEither<E, A> Technical PreviewThe Functional Programming API is a technical preview. Its surface may change in future releases without following semver. type TaskEither<E, A> = () => Promise<Either<E, A>>; Type Parameters E E A A Returns Promise<Either<E, A>>Was this helpful?