Today is an exciting day.

To install Bun v1.0:

curl https://bun.sh/install | bash
# or you can use npm
# npm install -g bun

To upgrade to Bun v1.0:

bun upgrade

Read Bun v1.0.0's release notes on Bun's blog

What's Changed

• Fix assertion failure with sourcemaps in multi-threaded transpiler by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4321
• Automatically hot reload Bun.serve() by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4344
• Fix the crash when importing a module that does not exist. by @Hanaasagi in https://github.com/oven-sh/bun/pull/4348
• More improvements to debugger support by @Electroid in https://github.com/oven-sh/bun/pull/4345
• Set the timezone in spawn in tests by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4337
• @electroid's dap changes by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4367
• Fix some edge cases in the env param of spawn. by @Hanaasagi in https://github.com/oven-sh/bun/pull/4364
• just kernel32 things by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4354
• make pending_response and metdata life cycle more clear and make fetch more reliable by @cirospaciari in https://github.com/oven-sh/bun/pull/4331
• Bring uSockets & uWebSockets forks into Bun's repository by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4372
• remove uws from .gitmodules by @prabhatexit0 in https://github.com/oven-sh/bun/pull/4374
• use options.fd if provided for fs.Read/WriteStream by @dylan-conway in https://github.com/oven-sh/bun/pull/4378
• feat(node:dns): implement dns.reverse. by @Hanaasagi in https://github.com/oven-sh/bun/pull/4332
• fix #4356 by @dylan-conway in https://github.com/oven-sh/bun/pull/4386
• Fix close callback and open event for fs streams by @dylan-conway in https://github.com/oven-sh/bun/pull/4384
• add unix socket support for node:http.server by @Hanaasagi in https://github.com/oven-sh/bun/pull/4390
• fix(node-fetch): use stream.Readable instead of web streams by @paperdave in https://github.com/oven-sh/bun/pull/4394
• Fix assertion failure in spawn-related tests by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4400
• More support for DAP by @Electroid in https://github.com/oven-sh/bun/pull/4380
• reset signal handlers in Bun.spawn by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4405
• fix(http/https) disable decompress on http/https client by @cirospaciari in https://github.com/oven-sh/bun/pull/4399
• minor rebuild diffs by @alexlamsl in https://github.com/oven-sh/bun/pull/4416
• exit handlers for resetting tty by @dylan-conway in https://github.com/oven-sh/bun/pull/4419
• [install] fix stale root life-cycle script in lockfile by @alexlamsl in https://github.com/oven-sh/bun/pull/4411
• add life cycle scripts to lockfile metahash by @dylan-conway in https://github.com/oven-sh/bun/pull/4420
• feat(node:fs): add cp/cpSync/promises.cp + async copyFile by @paperdave in https://github.com/oven-sh/bun/pull/4340
• Fix(semver): fix matching with pre-release version by @Hanaasagi in https://github.com/oven-sh/bun/pull/4412
• get name if not provided in FormData.append by @dylan-conway in https://github.com/oven-sh/bun/pull/4434
• bun install correctly join dependency URLs by @Parzival-3141 in https://github.com/oven-sh/bun/pull/4421
• only set initial debugger breakpoint once by @dylan-conway in https://github.com/oven-sh/bun/pull/4441
• fix(runtime): fs.cp edge cases by @paperdave in https://github.com/oven-sh/bun/pull/4439
• fix(runtime): fix dns_resolver crash by @paperdave in https://github.com/oven-sh/bun/pull/4435
• fix Bun.serve with tls and Bun.file by @dylan-conway in https://github.com/oven-sh/bun/pull/4450
• keep export * as by @dylan-conway in https://github.com/oven-sh/bun/pull/4451
• Fix typo in docs/api/tcp by @JorgeJimenez15 in https://github.com/oven-sh/bun/pull/4445
• docs: fix http simple example log statement by @karlbohlmark in https://github.com/oven-sh/bun/pull/4320
• fix(runtime): Fix fs.stat().mtime on MacOS by @paperdave in https://github.com/oven-sh/bun/pull/4440
• fix(syscall): fix handling syscall errno by @Hanaasagi in https://github.com/oven-sh/bun/pull/4461
• fix(HTMLRewriter) buffer response before transform by @cirospaciari in https://github.com/oven-sh/bun/pull/4418
• docs typo: loaders -> loader by @Hanaasagi in https://github.com/oven-sh/bun/pull/4476
• fix zlib deflate on fetch by @cirospaciari in https://github.com/oven-sh/bun/pull/4483
• remove chmod usage with --bun flag by @dylan-conway in https://github.com/oven-sh/bun/pull/4490
• fix dup syscall on Windows by @CGQAQ in https://github.com/oven-sh/bun/pull/4496
• minor rebuild diffs by @alexlamsl in https://github.com/oven-sh/bun/pull/4486
• fix ipv6 localhost fetch by @dylan-conway in https://github.com/oven-sh/bun/pull/4498
• fix checkout/build failure due to src/deps/uws by @alexlamsl in https://github.com/oven-sh/bun/pull/4505
• fix(install): ensure all lockfile structs do not have undefined padding by @paperdave in https://github.com/oven-sh/bun/pull/4401
• fix(fetch) fix proxy tunneling by @cirospaciari in https://github.com/oven-sh/bun/pull/4510
• fix(fetch) always use readable stream if it is available by @cirospaciari in https://github.com/oven-sh/bun/pull/4503
• fix(node:net): emit close event on connection error by @paperdave in https://github.com/oven-sh/bun/pull/4336
• feat(runtime): Implement fs.watchFile by @paperdave in https://github.com/oven-sh/bun/pull/4467
• Align process.nextTick execution order with Node by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4409
• fix text decode trim by @dylan-conway in https://github.com/oven-sh/bun/pull/4495
• update root certs by @cirospaciari in https://github.com/oven-sh/bun/pull/4499
• Update development.md by @ThatOneBro in https://github.com/oven-sh/bun/pull/4480
• allocate task for ThreadSafeFunction by @dylan-conway in https://github.com/oven-sh/bun/pull/4513
• fix(runtime): fix events.once not using a once listener. by @paperdave in https://github.com/oven-sh/bun/pull/4520
• Update node:fs compat docs cp/cpSync/watchFile/unwatchFile by @birkskyum in https://github.com/oven-sh/bun/pull/4525
• feat(fetch) rejectUnauthorized and checkServerIdentity by @cirospaciari in https://github.com/oven-sh/bun/pull/4514
• Progress for Next.js by @paperdave in https://github.com/oven-sh/bun/pull/4468
• revert by @paperdave in https://github.com/oven-sh/bun/pull/4539
• fix(fetch) closeAndFail instead of close by @cirospaciari in https://github.com/oven-sh/bun/pull/4537
• fix(cli): final touches for 1.0 by @paperdave in https://github.com/oven-sh/bun/pull/4538
• Doc updates for v1.0 by @colinhacks in https://github.com/oven-sh/bun/pull/4485
• Bump version to Bun 1.0.0 by @paperdave in https://github.com/oven-sh/bun/pull/4543
• Fix typo in sveltekit.md by @hiadamk in https://github.com/oven-sh/bun/pull/4550
• Fix a couple important bugs by @Jarred-Sumner in https://github.com/oven-sh/bun/pull/4560

New Contributors

• @prabhatexit0 made their first contribution in https://github.com/oven-sh/bun/pull/4374
• @JorgeJimenez15 made their first contribution in https://github.com/oven-sh/bun/pull/4445
• @karlbohlmark made their first contribution in https://github.com/oven-sh/bun/pull/4320
• @birkskyum made their first contribution in https://github.com/oven-sh/bun/pull/4525
• @hiadamk made their first contribution in https://github.com/oven-sh/bun/pull/4550

Full Changelog: https://github.com/oven-sh/bun/compare/bun-v0.8.1...bun-v1.0.0