What's new in Node.js 27
Node.js 27 brings V8 15.6 with Iterator.zip, Iterator.zipKeyed, Math.sumPrecise, net/promises, an unflagged node:vfs, and a 4 GB default heap limit.
Quick read
A detailed blog post summarizing the new features, runtime changes, and upgrade considerations in Node.js 27. Read it to learn about new Iterator helpers, Math.sumPrecise, node:net/promises, unflagged node:vfs, core improvements, and breaking changes to prepare for upgrading.
- Iterator helpers: zip, zipKeyed, join, and includes
- Math.sumPrecise for more accurate iterable summation
- node:net/promises and unflagged node:vfs APIs
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