es-toolkit/dist/predicate/isUndefined.js

A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.

'use strict';

Object.defineProperty(exports, Symbol.toStringTag, { value: 'Module' });

function isUndefined(x) {
    return x === undefined;
}

exports.isUndefined = isUndefined;