Native array extensions for javascript and typescript.
An ES7/ES2016 spec-compliant `Array.prototype.includes` shim/polyfill/replacement that works as far down as ES3.
ECMAScript extensions and shims
An ESnext spec-compliant `Array.prototype.findLast` shim/polyfill/replacement that works as far down as ES3.
An ESnext spec-compliant `Array.prototype.findLastIndex` shim/polyfill/replacement that works as far down as ES3.
Utility package to determine if an `Array.prototype` method properly boxes the callback's receiver and third argument.
An ESnext spec-compliant `Array.prototype.toSorted` shim/polyfill/replacement that works as far down as ES3.
An ES2019 spec-compliant `Array.prototype.flatMap` shim/polyfill/replacement that works as far down as ES3.
An ESnext spec-compliant iterator helpers shim/polyfill/replacement that works as far down as ES3.
An ES2019 spec-compliant `Array.prototype.flat` shim/polyfill/replacement that works as far down as ES3.
A state-of-the-art, high-performance JavaScript utility library with a small bundle size and strong type annotations.
An ESnext spec-compliant `Object.groupBy` shim/polyfill/replacement that works as far down as ES3.
An ES5 spec-compliant `Array.prototype.reduce` shim/polyfill/replacement that works as far down as ES3.
A set of efficient utilities that extend the use of JSON (streaming, estimate size, NDJSON/JSONL, etc.)
JavaScript utilities with respect to emerging standard
An ESnext spec-compliant `Array.prototype.toReversed` shim/polyfill/replacement that works as far down as ES3.
An ES5 spec-compliant `Array.prototype.map` shim/polyfill/replacement that works as far down as ES3.
An ES5 spec-compliant `Array.prototype.filter` shim/polyfill/replacement that works as far down as ES3.
A simple cache for a few of the JS Error constructors.
A ponyfill for the ES 2015 (ES6) `Array.from()`.
ES Object-related atoms: Object, ToObject, RequireObjectCoercible
A helper to optimistically set Symbol.toStringTag, when possible.
`Object.defineProperty`, but not IE 8's broken one.
ECMAScript spec abstract operations.