---
title: "Bun v1.3.7"
url: https://daily.dev/posts/bun-v1-3-7-0otwuahrf
source_url: https://bun.com/blog/bun-v1.3.7
type: article
source: "Bun"
published: 2026-01-27T07:08:33.285Z
updated: 2026-08-24T06:56:18.878Z
tags: ["javascript", "performance", "nodejs", "bun"]
reading_time: 23
upvotes: 15
comments: 1
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 v1.3.7

**[Bun](https://daily.dev/sources/bun)** · 23 min read · 15 upvotes · 1 comments

## Summary

Bun v1.3.7 fixes 91 issues and delivers major performance improvements: 50% faster Buffer.from(array), 35% faster async/await, 3x faster array.flat(), and 90% faster padStart/padEnd through a JavaScriptCore upgrade. New features include native JSON5 and JSONL parsers, Bun.wrapAnsi() (33-88x faster than wrap-ansi npm), heap and CPU profiling with markdown output, node:inspector Profiler API, and replMode for Bun.Transpiler. Fetch now preserves header casing, HTTP/2 compatibility is improved for AWS ALB/gRPC/Fauna, and numerous bugs are fixed across bundler, install, test, serve, shell, Node.js APIs, and Windows support.

## Full article

daily.dev links to this article rather than hosting it. Read it at the original source: <https://bun.com/blog/bun-v1.3.7>

## Community discussion

Top comments from developers on daily.dev.

**@yaireo** · 0 upvotes

> This is old news. `v1.3.8` already shipped...

## Similar posts on daily.dev

- [Bun v1.3.6](https://daily.dev/posts/bun-v1-3-6-wx4br4zyw) · Bun · 94 upvotes · 1 comments

---

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

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