typescript.news

Bun's latest release adds WebView for headless browser automation, lands TC39's using/await using in JavaScriptCore, and delivers a 2.3x speedup to URLPattern.

For decades, centering text vertically in buttons, badges, and layouts felt slightly off. The culprit: leading space — invisible padding built into every font's metrics. Two CSS properties now solve this at different levels: text-box-trim for inline text and margin-block with cap/lh units for block layouts.

WebKit, Google, and Mozilla just released JetStream 3 — the first major overhaul of the benchmark suite since 2019. It drops microbenchmarks in favor of realistic workloads, rewrites WebAssembly scoring, and introduces Dart, Kotlin, and Rust compiled to Wasm.

Node.js 25.9 adds an experimental stream/iter module for async iteration over streams, a --max-heap-size CLI flag, AsyncLocalStorage with using scopes, TurboSHAKE crypto, and an upgraded npm 11.12.1. Here's what each change means for your code.

Google has open sourced JSIR, a next-generation JavaScript analysis tool built on MLIR. It supports both high-level dataflow analysis and lossless source-to-source transformation — used internally for Hermes bytecode decompilation and AI-powered JavaScript deobfuscation.

QuickBEAM is a JavaScript runtime that runs inside the BEAM VM — the same virtual machine powering Erlang and Elixir. It integrates JavaScript into OTP supervision trees, lets JS call Elixir functions and OTP libraries, and ships with a built-in TypeScript toolchain.

A look back at the major events that reshaped TypeScript's position in the JavaScript ecosystem — from surpassing JavaScript on GitHub to npm supply chain compromises and the Go-based compiler rewrite targeting 10x faster builds.

JetBrains' March release turns on a service-based TypeScript engine by default, puts Junie, Claude Agent, Codex, and Cursor in the AI chat sidebar, sunsets Code With Me, and adds native Wayland support on Linux.

Astro 6.1 lets you tune Sharp's encoder settings at the pipeline level, adds advanced SmartyPants configuration, and exposes i18n fallback routes to the integration hook system. Cloudflare acquisition continues to shape the roadmap.

Vite 8.0.0 shipped stable on March 12, and the patch releases haven't stopped — v8.0.7 landed April 7 with fixes across CSS, SSR, WASM, and dev server behavior. A contrast to the long beta cycle.

In one month, Claude Mythos² Preview found thousands of zero-day vulnerabilities that survived decades of human review — in OpenBSD, the Linux kernel, FFmpeg, and every major browser. We dug into the technical details, the industry coalition, and what it means for every security team on the planet.

Deno 2.7 is a substantial mid-cycle release: the Temporal API is now production-ready, native Windows on ARM builds land, npm overrides work like in Node, and dozens of Node.js compatibility improvements land across worker_threads, child_process, zlib, and sqlite.

Cloudflare has built EmDash, a new open-source CMS written entirely in TypeScript and powered by Astro. Plugins run in isolated Dynamic Workers, solving WordPress's decades-old plugin security crisis where 96% of security issues originate.

Bun's latest release adds WebView for headless browser automation, lands TC39's using/await using in JavaScriptCore, and delivers a 2.3x speedup to URLPattern.

Deno 2.7 is a substantial mid-cycle release: the Temporal API is now production-ready, native Windows on ARM builds land, npm overrides work like in Node, and dozens of Node.js compatibility improvements land across worker_threads, child_process, zlib, and sqlite.

Cloudflare has built EmDash, a new open-source CMS written entirely in TypeScript and powered by Astro. Plugins run in isolated Dynamic Workers, solving WordPress's decades-old plugin security crisis where 96% of security issues originate.

Google has open sourced JSIR, a next-generation JavaScript analysis tool built on MLIR. It supports both high-level dataflow analysis and lossless source-to-source transformation — used internally for Hermes bytecode decompilation and AI-powered JavaScript deobfuscation.

Vite 8.0.0 shipped stable on March 12, and the patch releases haven't stopped — v8.0.7 landed April 7 with fixes across CSS, SSR, WASM, and dev server behavior. A contrast to the long beta cycle.

ESLint's biggest breaking-change release in years finalises flat config, removes eslintrc support entirely, and adds JSX reference tracking. But the bigger story might be what's nipping at its heels.

Astro 6.1 lets you tune Sharp's encoder settings at the pipeline level, adds advanced SmartyPants configuration, and exposes i18n fallback routes to the integration hook system. Cloudflare acquisition continues to shape the roadmap.

Cloudflare has built EmDash, a new open-source CMS written entirely in TypeScript and powered by Astro. Plugins run in isolated Dynamic Workers, solving WordPress's decades-old plugin security crisis where 96% of security issues originate.

Astro 6.0 and 6.1 land within weeks of each other, bringing an experimental Rust compiler, request-time content collections, a built-in Fonts API, CSP tooling, and deeper Cloudflare integration — all while the framework doubles its adoption for the third year running.

A look back at the major events that reshaped TypeScript's position in the JavaScript ecosystem — from surpassing JavaScript on GitHub to npm supply chain compromises and the Go-based compiler rewrite targeting 10x faster builds.

Cloudflare has built EmDash, a new open-source CMS written entirely in TypeScript and powered by Astro. Plugins run in isolated Dynamic Workers, solving WordPress's decades-old plugin security crisis where 96% of security issues originate.

Node.js shipped emergency security releases for v25, v24, v22, and v20 on March 24, 2026, patching two high-severity CVEs including a TLS SNICallback crash and an HTTP header prototype pollution risk. Here's what each fix does and which versions are affected.

Bun v1.3.11 drops a 4MB smaller binary, ships Bun.cron for OS-level scheduled jobs, and marks a pivotal moment as the runtime joins Anthropic to power Claude Code and future AI coding tools.

LogRocket's March 2026 AI development tool rankings show major shifts as Antigravity climbs to second place and OpenAI's Codex re-enters the top five.

By early 2026, Claude Code held a 46% 'most loved' rating among developers, leaving Cursor at 19% and GitHub Copilot at 9%. But love ratings and usage rankings don't tell the whole story. Here's what each tool actually does well, and when to use which.