ECMAScript 2026リリース。 2026年6月30日にEcmaで承認された正式リリース。 github.com/tc39/ecma262/rele…

React Compiler: Rust edition is coming soon. We've ported the majority of the passes using AI. When the initial port finishes we'll do some updates to get the code in a state we're happy to maintain, then extensive testing and look at performance. More to come soon

ECMAScript excitement 😉 Congrats to @rbuckton on meeting the conditions for Explicit Resource Management to be Stage 4 at @TC39 today 🎉 It introduces `using` declarations and the Symbol.dispose protocol to deterministically and ergonomically release resources 👍

TL;DR for open-source maintainers 🚫 NEVER use "pull_request_target" workflows 🚫 NEVER use shared caches in your publish pipeline Combining these 2 in particular is extremely dangerous I've repeated this countless times over the years, but another reminder is always useful

SECURITY ADVISORY — TanStack npm packages A supply-chain compromise affecting 42 @tanstack/* packages (84 versions total) was published to npm earlier today at approximately 19:20 and 19:26 UTC. Two malicious versions per package. Status: ACTIVE — packages are deprecated, npm security engaged, publish path being shut down. Severity: HIGH — payload exfiltrates AWS, GCP, Kubernetes, and Vault credentials, GitHub tokens, .npmrc contents, and SSH keys. If you installed any @tanstack/* package between 19:20 and 19:30 UTC today, treat the host as potentially compromised: • Rotate cloud, GitHub, and SSH credentials immediately • Audit cloud audit logs for the last several hours • Pin to a prior known-good version and reinstall from a clean lockfile Detection — the malicious manifest contains: "optionalDependencies": { "@tanstack/setup": "github:tanstack/router#79ac49ee..." } Any version with this entry is compromised. The payload is delivered via a git-resolved optionalDependency whose prepare script runs router_init.js (~2.3 MB, smuggled into each tarball at the package root). Unpublish is blocked by npm policy for most affected packages due to existing third-party dependents. All 84 versions are being deprecated with a SECURITY warning, and npm security has been engaged to pull tarballs at the registry level. Full technical breakdown, complete package and version list, and rolling status updates: github.com/TanStack/router/i… Credit to the security researcher for responsible disclosure.

Node.js v26.0.0 is out 💚 Temporal API enabled by default, V8 14.6, Undici 8, and key deprecations as we keep modernizing the platform. Check it out nodejs.org/en/blog/release/v…