Ecmascript

flag v

Adds set notation (difference, intersection) and Unicode string properties to ECMAScript regular expressions via the new 'v' flag.

object.valuesJavaScript

ES2017 spec-compliant shim for Object.values that works in ES3+ environments.

es6-mapJavaScript

A ponyfill/polyfill implementation of the ES6 Map collection for environments lacking native support.

ecmascript-compatJavaScript

Check JavaScript code compatibility with target browsers and Node.js versions using a browserslist.

Ponyfills

A curated list of ponyfills for writing cross-platform and cross-browser JavaScript code.

flag dHTML

A Stage 4 ECMAScript proposal to add start and end indices for regex capture groups via the 'd' flag.

object.entriesJavaScript

ES2017 spec-compliant shim for Object.entries that works in ES3 environments.

no-use-extend-nativeJavaScript

ESLint plugin that prevents using extended native objects in JavaScript code.

es5JavaScript

An ESLint plugin that enforces ES5-only JavaScript by forbidding ES2015+ features.

js-loadersJavaScript

Pseudoimplementation of the proposed ES6 module loaders API for JavaScript.

Legacy RegExp features

ECMAScript proposal to standardize legacy RegExp static properties like RegExp.$1 and the RegExp.prototype.compile method.

object-keysJavaScript

A shim for Object.keys that provides a reliable implementation for environments where it's missing.

Restrict subclassing support in built-ins

A TC39 proposal to remove ES6 built-in subclassing machinery (Types II, III, IV) to reduce complexity and security vulnerabilities.

array-includesJavaScript

A spec-compliant polyfill for Array.prototype.includes that works in ES3+ environments.

array.prototype.flatmapJavaScript

An ES2019 spec-compliant Array.prototype.flatMap shim/polyfill that works in ES3+ environments.

object.fromentriesJavaScript

ES spec-compliant polyfill for Object.fromEntries that shims the method in noncompliant or missing JavaScript environments.

Extended mode and commentsJavaScript

A TC39 proposal to add extended mode (x flag) with insignificant whitespace and comments to ECMAScript regular expressions.

es6-weak-mapJavaScript

A polyfill implementation of the WeakMap collection as specified in ECMAScript 6.

regexppTypeScript

A regular expression parser, validator, and AST visitor for ECMAScript, enabling programmatic analysis of regex patterns.

@mysticatea/eslint-pluginJavaScript

A comprehensive ESLint plugin providing custom rules and configurations for JavaScript, TypeScript, Vue.js, and Node.js projects.

object-isJavaScript

ES2015-compliant shim for Object.is that differentiates between -0 and +0 and correctly compares NaN.

Array.ofJavaScript

An ES2015 spec-compliant polyfill for the Array.of method, providing robust ES3-compatible shimming.

ENRE-tsTypeScript

A static source code entity relationship extractor for ECMAScript and TypeScript based on @babel/parser.

string.prototype.trimJavaScript

ES5 spec-compliant shim for String.prototype.trim that corrects engine bugs and works in ES3 environments.

Buffer boundariesHTML

Adds \A and \z escapes to ECMAScript regex for start/end of input anchors unaffected by multiline mode.

OnlyTodayJavaScript

An esoteric programming language where syntax changes based on the hour you write the code.

string.prototype.trimleftJavaScript

ES2019 spec-compliant shim for String.prototype.trimLeft to ensure consistent string trimming behavior across JavaScript environments.

string.prototype.trimrightJavaScript

ES2019 spec-compliant shim for String.prototype.trimRight, providing polyfill functionality for older JavaScript environments.

array.prototype.everyJavaScript

A spec-compliant polyfill for Array.prototype.every that works in ES3+ environments.

Function.createJavaScript

Create named functions easily in JavaScript with proper name property support across browsers.

\R escapeHTML

A proposal to add the \R escape sequence to ECMAScript regular expressions for matching Unicode line terminators.

es-file-traverseJavaScript

Traverse JavaScript files by following import/require chains to discover dependencies for linting and analysis.

array.prototype.someJavaScript

A spec-compliant polyfill for Array.prototype.some that works in ES3+ environments.