taylorhakes/promise-polyfill

Health v2 · maintenance only

Adoption not part of the score

2142 stars · 310 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

A lightweight (<1kb gzipped) ES6 Promise polyfill for browsers and Node.js that is Promises/A+ compliant. It can be used as a global polyfill for older browsers like IE or as a non-invasive ponyfill for library authors.

Use cases

• support promises in internet explorer and other old browsers
• add a global Promise object when the browser lacks native promises
• use a ponyfill without polluting the global environment in a library
• make legacy codebases use standard ES6 promise syntax
• shim Promise support in older node versions

When to choose

• you must support IE8+ or other browsers without native Promise support
• you need a tiny, spec-compliant Promise implementation
• you are a library author who wants a Promise ponyfill that doesn't touch globals

When to avoid

• your target browsers all support native promises
• you need modern features beyond the ES6 Promise spec
• you need high-performance async scheduling without a setImmediate polyfill in IE/Edge

Facets

library · maturity maintenance

serialization web-development frontend developer-tools browser cross-platform promise polyfill ponyfill promises-aplus es6 javascript lightweight nodejs

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