effect-io-ai

Package: effect
Module: Predicate

Predicate.isNull

A refinement that checks if a value is null.

Example

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

assert.strictEqual(isNull(null), true)

assert.strictEqual(isNull(undefined), false)
assert.strictEqual(isNull("null"), false)

Signature

declare const isNull: (input: unknown) => input is null

Source

Since v2.0.0