Doom for TypeScript types

Functional JavaScript First Steps, v2 — A friendly, practical introduction to functional programming fundamentals in JavaScript. Learn the power of the pure function while exploring functional programming paradigms.

Frontend Masters

Bun v1.2.3 and v1.2.4 Released — The rapid pace of progress on the JavaScriptCore-based runtime is only increasing. v1.2.3 pushes frontend dev server features (run bun ./index.html and all the bundling is done for you). bun init can now be used to create a new React project. Meanwhile, Bun 1.2.4 builds macOS apps 60% faster and macOS executables can now be code signed.

Jarred Sumner et al.

What is TypeScript? An Overview for JavaScript Programmers — You may have noticed esteemed JavaScript developer and author Dr. Axel has been on a TypeScript odyssey recently. Here he does a good job at boiling down the what (rather than the ‘why’) of TypeScript. A handy primer on what’s going on, even if you don’t plan to use it, since you’ll end up interacting with it somewhere..

Dr. Axel Rauschmayer

React Libraries for 2025 — Each year, prolific React blogger Robin updates his post covering his opinionated list of essential React ecosystem libraries. He covers a lot of angles from project creation and package management through to state management, animation, form creation, auth, and i18n.

Robin Wieruch

Turbocharging V8 with Mutable Heap Numbers — The V8 team uses the JetStream2 benchmark suite to investigate performance issues and has implemented a new optimization yielding not just a 2.5x improvement in the async-fs benchmark but in other areas too.

Victor Gomes (V8)

Subverting Control with Weak References — A weak reference differs from a normal reference in that it doesn’t prevent a referenced object from being garbage collected. Most modern JS runtimes support them and James shows how they can be useful.

James Long

Svelvet 11: Build Node-Based UIs with Svelte — A mature Svelte component library for creating interactive node-based UIs and diagrams. v11 adds the ability to toggle between ‘snap grid’ and freeform modes for manipulating elements. (There’s a live demo at the bottom of the homepage.)

Open Source Labs

Random: Seedable Random Number Generator — You’ve got Math.random but this library takes things a few steps further with easy ways to create random values of various types and using different distributions (e.g. normal distribution, Bernoulli, Poisson, Pareto and Weibull).

Travis Fischer