disposablestack/Symbol.asyncDispose/implementation.js

An ESnext spec-compliant `DisposableStack`, `AsyncDisposableStack`, `Symbol.dispose`, and `Symbol.asyncDispose` shim/polyfill/replacement that works as far down as ES3.

'use strict';

var hasSymbols = require('has-symbols/shams')();

module.exports = hasSymbols ? Symbol.asyncDispose || Symbol('Symbol.asyncDispose') : null;