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@stackline/es6-promise 1.0.3 — installation and API

A lightweight library that provides tools for organizing asynchronous code

Install @stackline/es6-promise

npm install @stackline/[email protected]

Package version: 1.0.3. Metadata verified: 2026-11-12. This is separate from the framework version and demonstration runtime.

Node.js requirement
{}
Accepted peer dependencies (declared ranges)
{}

Tested environments are described in the versioned README and linked source checks. A declared peer range is not evidence that every version in it was tested.

Versioned reference

This reference comes from the published @stackline/[email protected] README. Its upstream attribution and license remain with the source. Benchmark and security statements describe the cited tests and advisories, not a guarantee for every application.

@stackline/es6-promise

A lightweight library that provides tools for organizing asynchronous code.

Documentation | npm | Issues | Repository

Current package version: 1.0.3

Why this package?

@stackline/es6-promise is the Stackline-maintained distribution of [email protected]. It is an independent continuation of es6-promise; original authors and licenses remain credited below.

Compatibility

Item Value
Package @stackline/[email protected]
API target [email protected]
Supported Node.js See supported framework requirements
License MIT
Main entry dist/es6-promise.js
Types es6-promise.d.ts
Runtime dependencies none

Installation

npm install @stackline/es6-promise

Preserve existing imports and plugin resolution with an npm alias:

npm install es6-promise@npm:@stackline/es6-promise

Usage and API reference

ES6-Promise (subset of rsvp.js)

This is a polyfill of the ES6 Promise. The implementation is a subset of rsvp.js extracted by @jakearchibald, if you're wanting extra features and more debugging options, check out the full library.

For API details and how to use promises, see the JavaScript Promises HTML5Rocks article.

Downloads

CDN

To use via a CDN include this in your html:


<script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.js"></script>
<script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.auto.js"></script> 


<script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/es6-promise@4/dist/es6-promise.auto.min.js"></script>

Node.js

To install:

yarn add @stackline/es6-promise

or

npm install @stackline/es6-promise

To use:

var Promise = require('@stackline/es6-promise').Promise;

Usage in IE<9

catch and finally are reserved keywords in IE<9, meaning promise.catch(func) or promise.finally(func) throw a syntax error. To work around this, you can use a string to access the property as shown in the following example.

However most minifiers will automatically fix this for you, making the resulting code safe for old browsers and production:

promise['catch'](function(err) {
  // ...
});

promise['finally'](function() {
  // ...
});

Auto-polyfill

To polyfill the global environment (either in Node or in the browser via CommonJS) use the following code snippet:

require('@stackline/es6-promise').polyfill();

Alternatively

require('es6-promise/auto');

Notice that we don't assign the result of polyfill() to any variable. The polyfill() method will patch the global environment (in this case to the Promise name) when called.

Building & Testing

You will need to have PhantomJS installed globally in order to run the tests.

npm install -g phantomjs

  • npm run build to build
  • npm test to run tests
  • npm start to run a build watcher, and webserver to test
  • npm run test:server for a testem test runner and watching builder

Credits and original authors

Original copyright, license notices and contributor acknowledgements remain part of this distribution. Stackline maintenance does not replace authorship of the original work.

License

MIT. See the license and notice files in the repository.

Use this repository's issue tracker for reproducible bugs and feature requests. Join r/Stackline for examples, usage questions and release discussions.