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Functional methods like map, reduce, filter, etc. for ES6 Iterators.

operator overloading for js

event-emitter style wrapper around postMessage

Step through JavaScript code in the browser using JavaScript.

Exports all top-level declarations from a file. This can be used to mock private variables and functions.

collection of codemods

An overlay which can be added over top of an iframe to control how user events are propagated to the iframe.

React calculator built using PureScript

Edit ASTs directly.

Supplementary documentation of Flow.

micro library for simulating DOM events

operator overloading transform plugin for babel

Live reloading for JavaScript + sand boxing.

No description.

Chrome App that uses NativeMessaging to get pressure data.

Naive linear system solver

operator overloading for js demo

Define constraints with JavaScript syntax. Uses cassowary.js as a solver.

An easy to manipulate AST for representing mathematical expressions and equations.

HTML component similar to Chrome DevTools object inspector

Server that allows live-editor to communicate with output.html in a different window or different device

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Extract font metrics and display them in an web based viewer.

A tool for easy React component testing in real browsers.

WASM assembler and other experiments

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Vector graphics editor

Step by steps math solutions for everyone

Bundler for .js files produced by PureScript

library generating filleted SVG paths

faster prototyping of react components

Set operations for JavaScript Sets

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An experimental rewrite of live-editor

Manipulate mathematical expressions and equations.

Functional Reactive React

Optimization experiments for Web Workers

browser console emulator – see console output without opening dev tools

Transpile JavaScript to Python.

Manipulable Algebra Format

WebGL based material viewer.

Updating an existing AST by parsing subregion of code containing the cursor.

Overloads arithmetic operators for vector math.

Animated math using HTML5 canvas and XITS fonts

No description.

Surface and curve editor for WebGL

Run and edit various examples of new languages features in ES6.

Example project using browserify and 6to5

[Experimental] Lightweight JavaScript VM and stepping debugger in JavaScript

A declarative, efficient, and flexible JavaScript library for building user interfaces.

TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

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The compiler for Deimos, a small, low-level Lua inspired language

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Flags new and modified lines of code that aren't covered by tests

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Figuring out how best to define React HOCs using TypeScript

Experiment with tools from the vite ecosystem

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Rust-based platform for the Web

Bulk memory operations

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The compiler for ReScript.

Example showing how to use esbuild-loader for web pack with flow

ReScript's syntax as a standalone repo.

@testing-library inspired library for react-router based code

A test repo to verify that flag-untested-code-action is working properly

No description.

Simple util to find unused files in any JavaScript project (ES5, ES6, React, Vue, ...)

A tool for detecting when related text blocks change

The faster frontend build tool. Unbundled web development ✌️

🐠 Babel is a compiler for writing next generation JavaScript.

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patched version of jest-mock

A strongly-typed language that compiles to Javascript

Sources for the PureScript book

Example project trying to get PureScript and Wallaby working together.

A set of tools for working with flow typed JavaScript code

Documentation for the PureScript language, compiler, and tools.

Generalized folds, unfolds, and traversals for fixed point data structures

🔭 Auth0 Design System

Adds static typing to JavaScript to improve developer productivity and code quality.

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KaTeX plugin that adds support for Persian formulas (Persian & Arabic characters and numerals)

included code for A ReasonReact Tutorial

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RFCs for changes to React

Fast math typesetting for the web.

test out publishing of modules from a project using yarn workspaces

A tool for publishing multiple packages in mono-repos.

experimenting with various ides for serving es6 modules

Automate screenshot and integration testing of React components using Puppeteer

Mirror of https://hg.css-houdini.org/drafts

A proposal for operator overloading in ECMAScript

Lint and code-munging tools for Khan Academy codebase

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A presentation framework using markdown

CSS data

Button and button-like components

eslint plugin to disallow specific ES2015+ syntax

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Variable glyph creation tool and simulator

A port of the Processing visualization language to JavaScript.

Parametric font generation tool

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Math keypad built with React Native

A WebGL based web app for painting

NodeJS Browser Launcher

WebGL Experiments

Learn algebraic properties

Polyfills for various DOM APIs

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equal-loudness curves + Web Audio API

Status, process, and documents for ECMA262

testing out gesture handling using react-native-web

React Native for Web: A framework for building Native Web Apps

micro library that converts hierarchical structures to a flat ones (and back) preserving circular references

No description.

A slow JS-based HTML parser with good error feedback and debugging metadata.

default_dict for javascript

HTML5 + JavaScript game engine

Audit all of the math in all of the perseus items to see what still needs to be implemented in KaTeX

View individual glyph outlines from TrueType fonts.

module chunking example using webpack

One Round Trip! Based off https://github.com/erikras/react-redux-universal-hot-example

Build, display, and solve algebraic equations.

Functional reactive build system

Run tests using PhantomJS 2

:coffee: :ghost: PhantomJS Runners for Mocha

Learn basic math facts

Cassowary/JS, better, faster, future-ready

various v8 related coding experiments

math expressions

Perseus is Khan Academy's new exercise question editor and renderer.

Prototype puzzles and games for learning patterns in math

React server side rendering experiment using Node Managed VM + GAE (Python)

create interactive shapes

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In-browser casual 3D texture painting

A browser-based live coding environment.

A JS client-side library for creating graphic and interactive experiences, based on the core principles of Processing. http://twitter.com/p5xjs —

Escope: ECMAScript scope analyzer

Semantic analysis tools for JavaScript source code

Basic data structures for Javascript

ECMAScript code generator

No description.

3D library based mash of THREE.js and processing-js

fast builds for projects using TypeScript + Browserify

schedule and run "reentrant" tasks

Interactive animations of platonic solids rendered using canvas and processing.js.

The repository for high quality TypeScript type definitions.

Automated cross-browser JavaScript testing made easy

Functional Reactive Programming Demo

dat.gui is a lightweight controller library for JavaScript.

walker for ASTs produced by esprima

Visualization software for multiple integrals.

A lightweight JavaScript CAS for comparing expressions and equations.

View all of the symbols that KaTeX supports.

No description.

A framework for building exercises to work with Khan Academy.

The Web Audio API, developed by the W3C Audio WG

Highly optimized vector/matrix math (using objects)

a light Javascript & GLSL library for vizualisation and game purposes (2D or 3D).

A series of lessons in WebGL