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isNumber

A function that checks whether a given argument is a number, and if so, narrows the type of the argument to number.


Code​

🔗 View source code

Interface​

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

Usage​

typescript
import { isNumber } from '@modern-kit/utils';

isNumber(123); // true

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