Olle Lauri Boström

yalc. Work with yarn/npm packages locally like a boss.

betterer. betterer makes it easier to make incremental improvements to your codebase

paip-lisp. Lisp code for the textbook "Paradigms of Artificial Intelligence Programming"

design-system-package-dsp. DSP Documentation

themer. A Figma plugin designed to allow you to swap between styles named the same from different published libraries.

figmagic. Figmagic is the missing piece between DevOps and design: Generate design tokens, export graphics, and extract design token-driven React components from your Figma documents.

tools. Unified developer tools for JavaScript, TypeScript, and the web

esmbly. A composable transpiler infrastructure for working with statically typed JavaScript and WebAssembly

flow-to-typescript. Convert Flow-annotated files to TypeScript

dts-gen. dts-gen creates starter TypeScript definition files for any module or library.

type-profile. Collect runtime type information 😻 of your JavaScript code.

c8. output coverage reports using Node.js' built in coverage

ink. 🌈 React for interactive command-line apps

remote-jobs. Source for remoteintech.company — a community-maintained directory of remote-friendly tech companies

design. WebAssembly Design Documents

estree. The ESTree Spec

js-meter. it is an tool of measuring performance of time, CPU, RAM and heap of javascript code

rebus. 🌟 👣 Take your first steps as an open source contributor

wtfjs. 🤪 A list of funny and tricky JavaScript examples

front-end-interview-handbook. Front End interview preparation materials for busy engineers (updated for 2026)

typescript-library-starter. Starter kit with zero-config for building a library in TypeScript, featuring RollupJS, Jest, Prettier, TSLint, Semantic Release, and more!

opencv. Open Source Computer Vision Library

opencv-haar-classifier-training. Learn how to train your own OpenCV Haar classifier

HAAR.js. Feature Detection based on Haar Cascades in JavaScript (Viola-Jones-Lienhart et al Algorithm)

opencv.js. JavaScript

WebSight. OpenCV wasm and asm.js port

python-patterns. A collection of design patterns/idioms in Python

markdown-here. Google Chrome, Firefox, and Thunderbird extension that lets you write email in Markdown and render it before sending.

phaser-multiplayer-game. :video_game: Simple real-time multiplayer phaser game example which uses node and websockets.

react-bash. A configurable/extendable bash terminal React component

dsjslib. A library implementing several standard data structures and utilities, in JavaScript. Its written and tested using Node.js which is the target platform.

computer-science-in-javascript. Collection of classic computer science paradigms, algorithms, and approaches written in JavaScript.

BrowserQuest. DEPRECATED - A HTML5/JavaScript multiplayer game experiment