Abstract: Regular expressions are notoriously difficult to get right, with developers often having to resort to trial-and-error approaches. Even so, little attention ...

lykn is a lightweight Lisp that compiles to clean, readable JavaScript. No runtime, no dependencies in the output — just JS you'd write by hand, but expressed in s-expressions. lykn has two syntax ...

TypeScript 6.0 is the last release built on the JavaScript codebase. A new --stableTypeOrdering flag lets developers match TypeScript 7.0 behavior. TypeScript 7.0, written in Go, is "extremely close ...

The Signals pattern was first introduced in JavaScript’s Knockout framework. The basic idea is that a value alerts the rest of the application when it changes. Instead of a component checking its data ...

YouTube's specifications are extremely complex and change frequently. The yt-dlp development team previously supported YouTube using a method that heavily relied on regular expressions. However, in ...

CVE-2025-12735 in expr-eval allows remote code execution via unsafe input evaluation Vulnerable versions ≤2.0.2; patched in 2.0.3 and forked in expr-eval-fork 3.0.0 Developers should sanitize ...

A critical vulnerability in the popular expr-eval JavaScript library, with over 800,000 weekly downloads on NPM, can be exploited to execute code remotely through maliciously crafted input. The ...

Abstract: To improve the execution coverage of test cases and cover more of the engine code, this paper presents JSTIFuzz, a novel type-inference-based test system for JavaScript. First, to avoid an ...

We’ll start with the most far-reaching addition, which the spec describes as “a new Iterator global with associated static and prototype methods for working with iterators.” The most exciting part of ...

The object-oriented paradigm popularized by languages including Java and C++ has slowly given way to a functional programming approach that is advocated by popular Python libraries and JavaScript ...