effect-io-ai

Package: effect
Module: Array

Array.liftOption

Lifts an Option-returning function into one that returns an array: Some(a) becomes [a], None becomes [].

When to use

Use when an optional parser or lookup should participate in array pipelines as zero-or-one results.

Example (Lifting an Option function)

import { Array, Option } from "effect"

const parseNumber = Array.liftOption((s: string) => {
  const n = Number(s)
  return isNaN(n) ? Option.none() : Option.some(n)
})
console.log(parseNumber("123")) // [123]
console.log(parseNumber("abc")) // []

See

• liftPredicate — lift a boolean predicate
• liftResult — lift a Result-returning function

Signature

declare const liftOption: <A extends Array<unknown>, B>(f: (...a: A) => Option.Option<B>) => (...a: A) => Array<B>

Source

Since v2.0.0