A WeakMap shim for Node.js and browsers

.properties file parser, editor, formatter and bundler integrations.

Reads and interpolates Java .properties files

Automatic state replication for multiplayer games. Mutate plain objects, and every client gets a live, typed mirror through delta encoding.

`[].map(f)` for older browsers

ECMAScript6 Map polyfill

Use logical properties and values in CSS

[Experimental] - 🚇 File crawling, watching and mapping for Metro

A fork of npm-check.

A Map with weakly referenced values.

An ultra light-weight, nonexhaustive, polyfills library

Faster, node.js focused alternative to JavaScript's native array map.

The Map & WeakMap data structures as a reactive signals.

Compare, format, diff and serialize any JavaScript value

A blazing-fast equality comparison utility for a variety of use-cases

Applies source maps to stack traces, so a failing test points at the code you wrote rather than at the code Jest ran.

These are the shared libraries - types, classes, etc - that both the public state-machine and hosting services share

Map over promises serially

TypeScript definitions for define-properties

Tiny, simple, and robust technique for defining and acting with local states