effect-io-ai

Package: effect
Module: Option

Option.firstSomeOf

Returns the first Some found in an iterable of Options, or None if all are None.

When to use

Use when you need the first available Some value from a priority list.

Details

• Short-circuits on the first Some
• Returns None only when every element is None

Example (Finding the first Some)

import { Option } from "effect"

console.log(Option.firstSomeOf([
  Option.none(),
  Option.some(1),
  Option.some(2)
]))
// Output: { _id: 'Option', _tag: 'Some', value: 1 }

See

• orElse for a two-option fallback

Signature

declare const firstSomeOf: <T, C extends Iterable<Option<T>> = Iterable<Option<T>>>(collection: C) => [C] extends [Iterable<Option<infer A>>] ? Option<A> : never

Source

Since v2.0.0