---
title: "Bun v1.3.10"
url: https://daily.dev/posts/bun-v1-3-10-izqmeswhp
source_url: https://bun.com/blog/bun-v1.3.10
type: article
source: "Bun"
published: 2026-02-26T06:51:03.512Z
updated: 2026-02-28T06:13:08.977Z
tags: ["javascript", "performance", "typescript", "bun"]
reading_time: 21
upvotes: 25
comments: 3
language: en
---

> ## Documentation Index
> Fetch the complete documentation index at: https://daily.dev/llms.txt
> Use this file to discover all available pages before exploring further.

# Bun v1.3.10

**[Bun](https://daily.dev/sources/bun)** · 21 min read · 25 upvotes · 3 comments

## Summary

Bun v1.3.10 ships a major set of features and performance improvements. Highlights include a fully rewritten native REPL in Zig, `--compile --target=browser` for self-contained HTML output, TC39 stage-3 ES decorators support, Windows ARM64 support, and barrel import optimization. Performance gains are extensive: structuredClone up to 25x faster for arrays, Buffer.slice() ~1.8x faster, path.parse() up to 7x faster, deep rope string slicing 168x faster via JavaScriptCore upgrade, and fewer closures in bundled output. A critical fix resolves Python asyncio-based MCP servers breaking when spawned via Bun.spawn(). The release also addresses 155 issues including Node.js compatibility fixes, security patches (HTTP header injection, path traversal, SCRAM timing attack), memory leaks, and numerous crash fixes across the bundler, shell, and Windows.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://bun.com/blog/bun-v1.3.10>

## Community discussion

Top comments from developers on daily.dev.

**@andradei** · 2 upvotes

> node's successor.

## Similar posts on daily.dev

- [Bun v1.3.12](https://daily.dev/posts/bun-v1-3-12-f5ph0rgqu) · Bun · 140 upvotes · 2 comments

---

Tags: [#javascript](https://daily.dev/tags/javascript), [#performance](https://daily.dev/tags/performance), [#typescript](https://daily.dev/tags/typescript), [#bun](https://daily.dev/tags/bun)

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