effect-io-ai

Package: effect
Module: Option

Option.none

Represents the absence of a value by creating an empty Option.

Option.none returns an Option<never>, which is a subtype of Option<A>. This means you can use it in place of any Option<A> regardless of the type A.

Example (Creating an Option with No Value)

import { Option } from "effect"

// An Option holding no value
//
//      ┌─── Option<never>
//      ▼
const noValue = Option.none()

console.log(noValue)
// Output: { _id: 'Option', _tag: 'None' }

See

• some for the opposite operation.

Signature

declare const none: <A = never>() => Option<A>

Source

Since v2.0.0