isNumber

A TypeScript type guard that checks whether a value is a finite number, excluding NaN, so numeric logic stays safe and predictable.

Usage

Check whether a value is a number, excluding NaN. This is a TypeScript type guard function.

import { isNumber } from '@movk/core'

isNumber(123) // => true
isNumber(0) // => true
isNumber(Number.NaN) // => false
isNumber('123') // => false

isNumber(value: any): value is number

value

any required

The value to check.

boolean

Returns true if the value is a valid number (not NaN), otherwise false.

No recent changes

isFunction

A TypeScript type guard that checks whether a value is callable, narrowing it to a function type so you can safely invoke it in your code.

isObject

A TypeScript type guard that checks whether a value is a non-null object, excluding arrays, so property access is narrowed safely.