effect-io-ai

Package: effect
Module: Predicate

Predicate.isNumber

A refinement that checks if a value is a number.

Example

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

assert.strictEqual(isNumber(123), true)
assert.strictEqual(isNumber(0), true)
assert.strictEqual(isNumber(-1.5), true)
assert.strictEqual(isNumber(NaN), true)

assert.strictEqual(isNumber("123"), false)

Signature

declare const isNumber: (input: unknown) => input is number

Source

Since v2.0.0