Type Alias Result<T, E>

Result: Ok<T> | Err<E>

Discriminated union for operations that can fail.

Use ok and err helpers to construct values.

Type Parameters

T
E

Example

const success: Result<number, Error> = ok(42)
const failure: Result<number, Error> = err(new Error("failed"))

if (success.ok) {
  console.log(success.value) // 42
} else {
  console.log(success.error)
}