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Matt Pocock's Free React TypeScript Tutorial
Matt Pocock's free React TypeScript tutorial teaches typing for hooks, props, events via hands-on exercises. Covers ComponentProps, useRef, and reading React's type defs to debug errors. Bookmark this if your team is adopting TypeScript.
Matt Pocock Tutorial Covers Ten TypeScript Errors
Cryptic TypeScript errors waste hours. Matt Pocock's new tutorial isolates ten common messages from "Type Not Assignable" to "Property Does Not Exist" in interactive exercises. Clone the repo or use Gitpod to build debugging instincts instead of guessing.
Chrome 136 cuts JS startup 630ms with compile hints
Chrome 136 ships Explicit Compile Hints, cutting parse and compile times by 630ms in V8 tests. The //# allFunctionsCalledOnLoad comment triggers eager background compilation for entire files, avoiding main-thread bottlenecks.
Chrome M137 Ships Speculative Deopts and Inlining for Wasm
Chrome M137 adds speculative inlining and deoptimization to V8's WebAssembly engine, cutting Dart microbenchmarks by over 50%. It targets WasmGC, making Java, Kotlin, and Dart faster using JS-style JIT assumptions. Benchmark WasmGC apps on M137 now.
V8 doubles JSON.stringify speed with side-effect-free fast path
V8 doubled JSON.stringify speed with a side-effect-free fast path. Every network and storage serialization of plain objects gets faster with zero code changes. Check your profiles if JSON encoding shows up hot.
Mozilla WAICT Verifies Web App JavaScript in Nightly
WAICT in Firefox Nightly binds client code to public manifests so browsers reject unlogged JavaScript. This stops compromised servers from silently injecting malicious code into encrypted web apps like Signal. Test it at waict.dev.
Claude Mythos Cracks Firefox Bugs Fuzzing Missed
Claude Mythos Preview found 20-year-old XSLT and JIT bugs in Firefox that survived years of fuzzing. Mozilla shows AI now catches sandbox escapes and memory corruption. Add LLM security scanning to hardening workflows before attackers adopt them.
Firefox 151 adds Web Serial for desktop
Firefox 151 for Desktop adds Web Serial support for compatible hardware. It gives web-based device tools another browser to support. Check permissions, operating-system support and actual devices before removing a native fallback.
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