effect-io-ai

Package: effect
Module: Predicate

Predicate.isNotNullable

A refinement that checks if a value is neither null nor undefined. The type is narrowed to NonNullable<A>.

Example

import * as assert from "node:assert"
import { isNotNullable } from "effect/Predicate"

assert.strictEqual(isNotNullable(0), true)
assert.strictEqual(isNotNullable("hello"), true)

assert.strictEqual(isNotNullable(null), false)
assert.strictEqual(isNotNullable(undefined), false)

See

• isNullable

Signature

declare const isNotNullable: <A>(input: A) => input is NonNullable<A>

Source

Since v2.0.0