isNumber

a function that checks if the given argument is a number and, if so, narrows the argument's type to number.

Interface

typescript

const isNumber: (arg: unknown) => arg is number

Usage

import { isNumber } from '@devgrace/utils';


isNumber(123); // true

isNumber(() => {}); // false
isNumber('123'); // false
isNumber(true); // false
isNumber({}); // false
isNumber([]); // false