Bun
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bun.sh
Bun
@bun.sh
3.3K followers 1 following 52 posts
Bun is a fast, all-in-one toolkit for installing, bundling, running and testing JavaScript & TypeScript.

To install Bun:
```
curl https://bun.sh/install | bash -s
```

https://bun.sh
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bun.sh
30 days until Bun v1.3
August 29, 2025 at 6:02 PM
bun.sh
Bun v1.2.15
May 28, 2025 at 10:14 PM
bun.sh
Bun v1.2.15
- Fixes 11 issues (addressing 261 👍)
- `bun audit` scans for vulnerabilities
- `bun pm view `
- `bun init` adds a Cursor rule
- `bun ./index.html` gets "Automatic workspace folders" edit files in browser
- Fixes for vm & worker_threads

bun.sh/blog/bun-v1....
Bun v1.2.15
Fixes 11 issues (addressing 261 👍). bun audit scans dependencies for security vulnerabilities, bun pm view shows package metadata from npm. bun init adds a Cursor rule to use Bun instead of Node.js/Vi...
bun.sh
May 28, 2025 at 7:10 PM
bun.sh
Bun v1.2.14
- Fixes 39 issues (addressing 179 👍)
- Catalogs in bun install simplify sharing dependency versions in monorepos
- Fixes HTTPS proxy issue impacting OpenAI Codex
- zstd + fetch
- Several Node compatibility bugfixes

Thanks to 13 contributors!

bun.sh/blog/bun-v1....
Bun v1.2.14
Fixes 39 issues (addressing 179 👍). Adds support for catalogs in bun install, --react flag for bun init, improved HTTP routing with method-specific routes, better TypeScript default module settings, f...
bun.sh
May 22, 2025 at 3:33 PM
bun.sh
Bun v1.2.12
Stream browser console. log to terminal Memory 272 MB OLD 150 мв NEW Hot reloads with lucide-react (307 reloads) [browser) Hello! Node.js Compatibility 98.4% of timers tests pass node,js
May 5, 2025 at 9:04 PM
bun.sh
Bun v1.2.12
- Echo browser console logs to terminal
- Reduced memory usage for frontend hmr with Bun.serve()
- Node.js compatibility fixes for `timers`, `vm`, `net`, and `http`
- bugfix for global postinstalls impacting Claude Code

thx 10 contributors!

bun.sh/blog/bun-v1....
Bun v1.2.12
Stream browser console logs to your terminal, dev server uses less memory. Node.js compatibility improvements for timers, vm, net, http, and bugfixes for TextDecoder, hot reloading reliability bugfixe...
bun.sh
May 4, 2025 at 12:09 PM
bun.sh
In the next version of Bun & Safari

Polymorphic array access gets up to 8x faster, thanks to
@yusukesuzuki.bsky.social
mport { run, bench } from "mitata"; // Assuming the vectors are of the same length function cosineDistance(a, b) { let dotProduct = 0; let magA = 0; let magB = 0; for (let i = 0; i < a.length; i++) { dotProduct += a[i] * b[i]; magA += a[i] * a[i]; magB += b[i] * b[i]; } return 1 - dotProduct / (Math.sqrt(magA) * Math.sqrt(magB)); } // Generate random data for testing const dimensions = 1536; // Adjust dimensions as needed const array1 = Array.from({ length: dimensions }, () => Math.random() * 100); const array2 = Array.from({ length: dimensions }, () => Math.random() * 100); const floatArray1 = new Float32Array(array1); const floatArray2 = new Float32Array(array2); bench("Array", () => { cosineDistance(array1, array2); }); bench("Float32Array", () => { cosineDistance(floatArray1, floatArray2); }); await run(); bun-latest array.mjs # New clk: ~3.94 GHz cpu: Apple M3 Max runtime: bun 1.2.9 (arm64-darwin) benchmark avg (min … max) ------------------------------------------- Array 1.07 µs/iter 1.07 µs ▇▃ ▄█▂ (1.06 µs … 1.13 µs) 1.09 µs ▄██▆███▇▅▄▄▄▂▂▂▁▁▁▁▂▂ Float32Array 1.64 µs/iter 1.64 µs █ (1.46 µs … 1.68 µs) 1.67 µs ▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁██▃▁ bun-1.2.8 array.mjs # Prev clk: ~3.87 GHz cpu: Apple M3 Max runtime: bun 1.2.8 (arm64-darwin) benchmark avg (min … max) ------------------------------------------- Array 1.07 µs/iter 1.07 µs ▄ █▂ (1.06 µs … 1.11 µs) 1.10 µs ▅█▆▆██▄▄▅▂▁▁▁▂▂▁▁▁▁▁▁ Float32Array 13.52 µs/iter 13.50 µs █ █ (13.41 µs … 14.02 µs) 13.59 µs ██▁▁▁███▁██▁▁▁▁▁▁▁▁██ node array.mjs # Node, for comparison clk: ~3.94 GHz cpu: Apple M3 Max runtime: node 23.10.0 (arm64-darwin) benchmark avg (min … max) ------------------------------------------- Array
April 5, 2025 at 12:03 AM
bun.sh
Bun v1.2.8
- Fixes 18 bugs (addressing 18 👍)
- napi perf improvement for integers
- 2x faster headers.get()
- node:http & node:fs bugfixes
- `bun install --frozen-lockfile` + `overrides` fix
- `bun pack` directory-specific ignores

Full release notes below
March 31, 2025 at 4:35 PM
bun.sh
Bun v1.2.7
- Fixes 35 bugs (addressing 219 👍)
- Builtin request.cookies.set & get in Bun.serve() routes
- Fixed TypeScript type definitions conflicts with `@types/node` & libdom
- Bugfixes for node:http, node:vm

Thanks to 13 contributors! Full release notes below
March 27, 2025 at 10:47 AM
bun.sh
Bun v1.2.6
- Fixes 74 bugs (addressing 36 👍)
- node:crypto gets faster & more Node.js compatible
- Faster fastify & express
- `timeout` in Bun.spawn
- Dev Server stability fixes
- Bun.SQL unix domain sockets

Thanks to 23 contributors!
bun.sh/blog/bun-v1....
Bun v1.2.6
Fixes 74 bugs (addressing 36 👍). Faster, more compatible node:crypto. `timeout` option in Bun.spawn. Support for `module.children` in `node:module`. Connect to PostgreSQL via unix sockets with `Bun.SQ...
bun.sh
March 25, 2025 at 8:09 AM
bun.sh
Bun v1.2.5
- Fixes 75 bugs (addressing 162 👍)
+69 passing tests from Node.js
- Frontend Dev Server fixes, CSS Modules support
- Full rewrite of N-API (napi addons)
- Faster Sign, Verify, Hash, Hmac from node:crypto

Thanks to 25 contributors!

bun.sh/blog/bun-v1....
Bun v1.2.5
Fixes 75 bugs (addressing 162 👍), and adds +69 passing Node.js tests. Improvements to the frontend dev server, CSS modules support, a full rewrite of Node-API, faster `Sign`, `Verify`, `Hash`, `Hmac` ...
bun.sh
March 11, 2025 at 12:57 PM
Reposted by Bun
shutock.com
built a @turbo.build template with a shared @tailwindcss.com v4 config, @biomejs.dev for linting & formatting, and powered by @bun.sh

Check it out: github.com/shutock/twur...
GitHub - shutock/twurbun: A Turborepo template with a shared Tailwind v4 config, Biome for linting & formatting, and Bun for blazing-fast package management.
A Turborepo template with a shared Tailwind v4 config, Biome for linting & formatting, and Bun for blazing-fast package management. - shutock/twurbun
github.com
March 2, 2025 at 1:54 AM
bun.sh
Bun v1.2.4
- Frontend dev server stability improvements
- Codesign compiled executables on macOS
- Up to 60% faster `bun build` on macOS
- Node.js compatibility fixes
- Faster array.includes
- Many bugfixes

Thanks to 17 contributors!
bun.sh/blog/bun-v1....
Bun v1.2.4
Up to 60% faster Bun.build on macOS, codesigning support for single-file executables on macOS, dev server stability improvements, fixes a regression from v1.2.3 affecting Hono, fixes up/down buttons i...
bun.sh
February 26, 2025 at 10:26 AM
bun.sh
Bun v1.2.3
- Fixes 128 bugs (addressing 349 👍)
- Incredibly fast frontend dev server with hot reloading
- Builtin routes in Bun.serve
- Many Bun.SQL fixes
- Wasm gets faster
- Node compatibility improvements for napi & Buffer

Thanks to 23 contributors!
bun.sh/blog/release...
Bun v1.2.3
Fixes 128 bugs (addressing 349 👍). Bun gets a full-featured frontend development toolchain with incredibly fast hot reloading and bundling. Built-in routing for Bun.serve() makes it simpler to build w...
bun.sh
February 22, 2025 at 7:22 AM
Reposted by Bun
vasilevsky.ca
And done! Try exporting your Paper docs with my new tool: www.npmjs.com/package/drop...
February 19, 2025 at 5:36 PM
bun.sh
In the next version of Bun

Bun.serve() gets builtin support for hot reloading frontend applications.
February 11, 2025 at 8:05 AM
Reposted by Bun
jherr.dev
@bun.sh is gunning for @vite.dev! youtu.be/NvitRPQqaSs Now it can serve HTML files right off the command line, and it even supports API routes!
Is Bun The End Of Vite?
YouTube video by Jack Herrington
youtu.be
February 4, 2025 at 4:52 PM
bun.sh
Bun v1.2.2
- Fixes 38 bugs (addressing 129 👍)
- JavaScript idle memory usage reduced by 10–30%
- Fixes v1.2.1 regression impacting `vite build`
- Node compatibility fixes
- Reliability improvements to Bun.SQL and Bun.S3Client

Thanks to 12 contributors!
bun.sh/blog/bun-v1....
Bun v1.2.2
Fixes 38 bugs (addressing 129 👍). JavaScript idle memory usage drops by 10–30%. Fixes regression impacting vite build. Reliability improvements to Bun.SQL, Bun.S3Client, Bun's CSS parser. Node.js comp...
bun.sh
February 1, 2025 at 5:44 AM
bun.sh
Bun v.1.2.1
- Fixes 32 bugs
- S3Client gets `storageClass` support
- X25519 support in node:crypto
- Node.js compatibility improvements for node:fs & node:child_process. fs.stat uses less memory.
- Several memory leak fixes

Thanks to 16 contributors!
bun.sh/blog/bun-v1....
Bun v1.2.1
Fixes 32 bugs. S3 storage class support, X25519 support in crypto.generateKeyPair. fs.stat uses less memory. node:fs, node:child_process, and node:process compatibility improvements. CSS parser bugfix...
bun.sh
January 27, 2025 at 11:10 PM
bun.sh
bun dler

youtu.be/Y5JrsqBt7sI?...
Bun's FINALLY A Bundler (and much much more)
YouTube video by Theo - t3․gg
youtu.be
January 26, 2025 at 2:39 AM
bun.sh
Introducing Bun 1.2

bun.sh/blog/bun-v1.2
Bun 1.2
Built-in Postgres client with Bun.sql, built-in S3 object support with Bun.s3, a new text-based lockfile: bun.lock, Express is 3x faster, and a major update on Node.js compatibility.
bun.sh
January 22, 2025 at 9:32 PM
bun.sh
Bun v1.2 in 17 hours

youtu.be/uSzffuqfJQk?...
Bun 1.2
YouTube video by Bun
youtu.be
January 20, 2025 at 10:23 PM
bun.sh
many such cases
Fucking hell, bun is so fast 1 It's out of this world fast What kind of black magic is this haha I got expo working with bun Literally 10min of work lol
January 17, 2025 at 5:24 PM
bun.sh
Bun v1.1.45

- Fixes 13 bugs (addressing 50 👍)
- X509Certificate, diffieHellman, getCipherInfo in 'crypto'
- 82% of Node.js' "stream" tests pass (several remaining test Node internals)
- Bugfixes to fs.mkdir and more

Thanks to 5 contributors!
bun.sh/blog/bun-v1....
Bun v1.1.45
Fixes 13 bugs (addressing 50 👍) 82% of the 'streams' module tests from Node.js' test suite now pass in Bun. node:crypto now implements diffieHellman, getCipherInfo, and X509Certificate. The checkServe...
bun.sh
January 17, 2025 at 3:50 PM