runtime

Bun v1.4.3, published October 10, 2026, adds bun check, a built-in type checker ported from typescript-go that Bun says matches tsc 7.0.2 output and runs 3x to 6.4x faster, plus --check flags for run, test and build.

Node.js 26.11.0 renames DatabaseSync and StatementSync to Database and Statement with aliases kept, adds --process-timeout, and 26.11.1 reverts three commits.

The Bytecode Alliance patched eight Wasmtime advisories on October 2, including a critical 9.3 CVSS stack buffer overflow that lets a guest write about 16KB to the host's native stack.

Node.js closed the 19,000-line VFS pull request that split the project over AI-generated code, after its functionality shipped through smaller PRs and the TSC adopted a formal AI use policy.

Deno 2.8, released May 22, adds deno audit fix, deno pack, deno ci, deno transpile, deno why, and deno bump-version, while slashing cold npm install times by 3.66x and enabling Chrome DevTools network traffic inspection.

The May 2026 major release hardens the BEAM runtime's security posture with quantum-resistant cryptography defaults and disabled SSH shell access, while adding experimental native records to the language for the first time.

Anthropic's first major Bun release since acquiring the runtime tackles long-running-process leaks, adds isolate, parallel and shard test flags, and lands days after Pulumi made Bun a fully supported infrastructure-as-code runtime.

Node.js 26 ships April 22 as the final release under the project's long-running odd/even cadence, with the Temporal API on track and a new annual LTS-for-all model beginning with Node.js 27.

Go 1.26 ships with the Green Tea garbage collector enabled by default, replacing the object-centric mark-sweep algorithm with a page-level scanner that reduces GC CPU costs by 10 to 40 percent in real-world workloads.

The open-source runtime executes Node.js v24 applications inside a WASIX sandbox without Docker, passing 99 percent of the Node.js test suite while trading 5 to 30 percent of native performance for process-level isolation.

Deno 2.7 ships stable Temporal date/time API, official Windows ARM builds, npm overrides, and over 40 Node.js compatibility fixes in its February 25 release.

Node.js published versions 25.6.0, 25.6.1, and 25.7.0 across February 2026, advancing built-in SQLite to release-candidate status, extending Single Executable Applications to ESM entry points, and adding SIMD-accelerated text encoding.