effect-io-ai

Package: effect
Module: Predicate

Predicate.isNumber

Checks whether a value is a number.

When to use

Use when you need a Predicate guard to narrow an unknown value to a number.

Details

Uses typeof input === "number" and does not exclude NaN or Infinity.

Example (Guarding numbers)

import { Predicate } from "effect"

const data: unknown = 42

if (Predicate.isNumber(data)) {
  console.log(data + 1)
}

See

• isBigInt
• isString

Signature

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

Source

Since v2.0.0