is-what/dist/isNegativeNumber.js

JS type check (TypeScript supported) functions like `isPlainObject() isArray()` etc. A simple & small integration.

import { isNumber } from './isNumber.js';
/** Returns whether the payload is a negative number (but not 0) */
export function isNegativeNumber(payload) {
    return isNumber(payload) && payload < 0;
}