Question 1

How do I auto-polyfill Promises with ES6-Promise?

Accepted Answer

Use the 'es6-promise-auto' script from the CDN or require 'es6-promise/auto' in Node.js; it automatically checks and patches the global Promise object if missing or broken, simplifying setup without manual intervention.

Question 2

ES6-Promise vs Bluebird: which one should I use?

Accepted Answer

ES6-Promise is best for minimal, standards-compliant polyfilling in legacy environments, while Bluebird offers extra features like cancellation and performance optimizations but is larger. Choose based on your need for advanced utilities versus lightweight compatibility.

Question 3

Does ES6-Promise support async/await?

Accepted Answer

No, ES6-Promise only provides the Promise polyfill; async/await requires ES2017+ support or additional transpilation tools like Babel. It enables Promises but not the async syntax itself.

Question 4

How to use ES6-Promise in Node.js?

Accepted Answer

Install via npm or yarn, then require it with 'var Promise = require('es6-promise').Promise' or use 'require('es6-promise').polyfill()' to patch globally, as shown in the Node.js usage examples in the README.

Question 5

Is ES6-Promise still necessary in 2024?

Accepted Answer

For legacy browser support (e.g., IE) or older Node.js versions, yes. However, most modern browsers and Node.js versions have native Promise support, so assess your target environment to avoid unnecessary polyfilling.

Question 6

What's the difference between es6-promise and es6-promise-auto?

Accepted Answer

es6-promise provides the Promise constructor without auto-polyfilling, while es6-promise-auto automatically patches the global Promise object if it's missing or broken, making it ideal for drop-in compatibility in polyfill scenarios.

es6-promise

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