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ljharb/documenting-invariants

Proposal to document design invariants in TC39

Last commit Jul 9, 2020

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ljharb/dt-cleanJavaScript

Ensures the only DefinitelyTyped (`@types`) packages you have installed are the ones you need.

Last commit Jun 19, 2026

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ljharb/ecma262HTML

Status, process, and documents for ECMA262

Last commit Jun 5, 2026

 (5 stars) (2 forks) (0 indexed issues) (0 open good first issues)
ljharb/emojisRuby

Custom emojis supported by Buildkite which you can use in your build pipelines and terminal output.

Last commit Mar 13, 2018

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ljharb/entJavaScript

Encode and decode HTML entities

Last commit Dec 16, 2024

 (2 stars) (1 fork) (0 indexed issues) (0 open good first issues)
ljharb/enzymeJavaScript

JavaScript Testing utilities for React

Last commit Apr 5, 2021

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ljharb/enzyme-example-tapeJavaScript

Example project with React + Enzyme + Tape

Last commit Nov 14, 2018

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ljharb/es-abstractJavaScript

ECMAScript spec abstract operations.

Last commit May 20, 2026

 (121 stars) (31 forks) (1 indexed issue) (1 open good first issue)
ljharb/es-abstract-getJavaScript

ECMAScript Abstract Operations for "getting properties" (Get, GetV, GetMethod)

Last commit Jun 16, 2026

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ljharb/es-array-method-boxes-properlyJavaScript

Utility package to determine if an `Array.prototype` method properly boxes the callback's receiver and third argument.

Last commit Mar 16, 2026

 (4 stars) (1 fork) (0 indexed issues) (0 open good first issues)
ljharb/es-define-propertyJavaScript

`Object.defineProperty`, but not IE 8's broken one.

Last commit Dec 6, 2024

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ljharb/es-errorsJavaScript

A simple cache for a few of the JS Error constructors.

Last commit Mar 9, 2024

 (10 stars) (5 forks) (0 indexed issues) (0 open good first issues)
ljharb/es-get-iteratorJavaScript

Get an iterator for any JS language value. Works robustly across all environments, all versions.

Last commit Jun 15, 2024

 (13 stars) (6 forks) (0 indexed issues) (0 open good first issues)
ljharb/es-promiseJavaScript

A promise implementation of Promises/A+, and with es7 promise enhancements.

Last commit Jun 12, 2018

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ljharb/es-shim-unscopablesJavaScript

Helper package to shim a method into `Array.prototype[Symbol.unscopables]`

Last commit Jan 13, 2026

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ljharb/es-to-primitiveJavaScript

ECMAScript "ToPrimitive" algorithm. Provides ES5 and ES6/ES2015 versions.

Last commit Dec 29, 2025

 (22 stars) (9 forks) (0 indexed issues) (0 open good first issues)
ljharb/es-value-fixturesJavaScript

Fixtures of ES values, for testing purposes.

Last commit Jan 23, 2025

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ljharb/es5-shimJavaScript

ECMAScript 5 compatibility shims for legacy JavaScript engines

Last commit Apr 14, 2022

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ljharb/es6-promiseJavaScript

A polyfill for ES6-style Promises

Last commit Sep 23, 2015

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ljharb/es6-shimJavaScript

ECMAScript 6 (Harmony) compatibility shims for legacy JavaScript engines

Last commit Apr 16, 2026

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