Node LTS版本：Argon发布始末

参考资料：

• v4.2.0发布
• v4.2.1发布

Node.js在近两天发布了Node.js自合并io.js之后的第一个LTS版本。其代号为Argon，即元素周期表的第18号元素。

LTS版本的发布计划是Node.js与io.js的合并计划中的一个要点，其目标是提供长期支持的稳定版本。支持周期为从发布之日起的30个月。这对Node.js的使用者来说，无论是个人还是商业组织，将有一个赖以成长的稳定支持平台。

更多关于LTS的细节，参见Rod Vagg的博文.

代号规则

LTS版本代号的规则是取自元素周期表，将所有元素按字母排序之后，按次序选区。第一个LTS版本的代号既是排在第一位的：Ar元素。

LTS版本与普通的版本发行上有一点区别，开发者可以通过以下代码来进行区分当前Node.js是LTS版本还是普通版本：

$ node -v
v4.2.0
$ node -pe process.release.lts
Argon

如果是普通的版本，process.release.lts属性将会是undefined；而LTS版本则会是当前的版本代号。

重要改动

这是第一次Node.js LTS发布。LTS流程的细节请查看https://github.com/nodejs/LTS/。

v4.2.0

• icu: 更新到版本56，获得显著的性能提升。 (Steven R. Loomis) #3281

• node:

  • 添加新的-c (or --check) 命令行参数来检查脚本语法但不执行代码 (Dave Eddy) #2411
  • 添加 process.versions.icu 来持有当前ICU库的版本号 (Evan Lucas) #3102
  • 当二进制文件是来自于活跃的LTS版本线，添加 process.release.lts 来持有当前LTS代号， (Rod Vagg) #3212
• npm: 从npm 2.14.4升级至npm 2.14.7，全部细节参见release notes (Kat Marchán) #3299

v4.2.1

• 包含两个回归问题的修复

  • WeakCallback的断言错误 #3329
  • timeout未定义的退化 #3331

已知问题

当前的所有已知问题列表参见https://github.com/nodejs/node/labels/confirmed-bug

• When a server queues a large amount of data to send to a client over a pipelined HTTP connection, the underlying socket may be destroyed. See #3332 and #3342.
• Some problems with unreferenced timers running during beforeExit are still to be resolved. See #1264.
• Surrogate pair in REPL can freeze terminal. #690
• Calling dns.setServers() while a DNS query is in progress can cause the process to crash on a failed assertion. #894
• url.resolve may transfer the auth portion of the url when resolving between two full hosts, see #1435.

提交

v4.2.0

• [8383c4fe00] - assert: support arrow functions in .throws() (Ben Noordhuis) #3276
• [3eaa593a32] - async_wrap: correctly pass parent to init callback (Trevor Norris) #3216
• [54795620f6] - buffer: don't abort on prototype getters (Trevor Norris) #3302
• [660f7591c8] - buffer: FreeCallback should be tied to ArrayBuffer (Fedor Indutny) #3198
• [651a5b51eb] - buffer: only check if instance is Uint8Array (Trevor Norris) #3080
• [d5a1b1ad7c] - buffer: clean up usage of proto (Trevor Norris) #3080
• [af24376e18] - build: Intl: deps: bump ICU to 56.1 (GA) (Steven R. Loomis) #3281
• [9136359d57] - build: make icu download path customizable (Johan Bergström) #3200
• [b3c5ad10a8] - build: add --with-arm-fpu option (Jérémy Lal) #3228
• [f00f3268e4] - build: intl: avoid 'duplicate main()' on ICU 56 (Steven R. Loomis) #3066
• [071c72a6a3] - deps: upgrade to npm 2.14.7 (Kat Marchán) #3299
• [8b50e95f06] - (SEMVER-MINOR) deps: backport 1ee712a from V8 upstream (Julien Gilli) #3036
• [747271372f] - doc: update the assert module summary (David Boivin) #2799
• [0d506556b0] - doc: replace node-gyp link with nodejs/node-gyp (Roman Klauke) #3320
• [40a159e4f4] - doc: Amend capitalization of word JavaScript (Dave Hodder) #3285
• [6dd34761fd] - doc: add method links in dns.markdown (Alejandro Oviedo) #3196
• [333e8336be] - doc: add method links in child_process.markdown (Alejandro Oviedo) #3186
• [0cfc6d39ca] - doc: recommend Infinity on emitter.setMaxListeners (Jason Karns) #2559
• [d4fc6d93ef] - doc: add help repo link to CONTRIBUTING.md (Doug Shamoo) #3233
• [28aac7f19d] - doc: add TLS session resumption example (Roman Reiss) #3147
• [365cf22cce] - doc: update AUTHORS list (Rod Vagg) #3211
• [d4399613b7] - doc: standardize references to userland (Martial) #3192
• [75de258376] - doc: fix spelling in Buffer documentation (Rod Machen) #3226
• [725c7276dd] - doc: fix README.md link to joyent/node intl wiki (Steven R. Loomis) #3067
• [4a35ba4966] - (SEMVER-MINOR) fs: include filename in watch errors (charlierudolph) #2748
• [2ddbbfd164] - http: cork/uncork before flushing pipelined res (Fedor Indutny) #3172
• [f638402e2f] - http: add comment about outputSize in res/server (Fedor Indutny) #3128
• [1850879b0e] - js_stream: prevent abort if isalive doesn't exist (Trevor Norris) #3282
• [63644dd1cd] - lib: remove redundant code, add tests in timers.js (Rich Trott) #3143
• [74f443583c] - module: use UNC paths when loading native addons (Justin Chase) #2965
• [01cb3fc36b] - net: don't throw on bytesWritten access (Trevor Norris) #3305
• [9d65528b01] - (SEMVER-MINOR) node: add -c|--check CLI arg to syntax check script (Dave Eddy) #2411
• [42b936e78d] - (SEMVER-MINOR) src: add process.release.lts property (Rod Vagg) #3212
• [589287b2e3] - src: convert BE-utf16-string to LE before search (Karl Skomski) #3295
• [2314378f06] - src: fix u-a-free if uv returns err in ASYNC_CALL (Karl Skomski) #3049
• [d99336a391] - (SEMVER-MINOR) src: replace naive search in Buffer::IndexOf (Karl Skomski) #2539
• [546e8333ba] - (SEMVER-MINOR) src: fix --abort-on-uncaught-exception (Jeremy Whitlock) #3036
• [7271cb047c] - (SEMVER-MINOR) src: add process.versions.icu (Evan Lucas) #3102
• [7b9f78acb2] - stream: avoid pause with unpipe in buffered write (Brian White) #2325
• [f0f8afd879] - test: remove common.inspect() (Rich Trott) #3257
• [5ca4f6f8bd] - test: test util rather than common (Rich Trott) #3256
• [7a5ae34345] - test: refresh temp directory when using pipe (Rich Trott) #3231
• [7c85557ef0] - test: Fix test-fs-read-stream-fd-leak race cond (Junliang Yan) #3218
• [26a7ec6960] - test: fix losing original env vars issue (Junliang Yan) #3190
• [e922716192] - test: remove deprecated error logging (Rich Trott) #3079
• [8f29d95a8c] - test: report timeout in TapReporter (Karl Skomski) #2647
• [2d0fe4c657] - test: linting for buffer-free-callback test (Rich Trott) #3230
• [70c9e4337e] - test: make common.js mandatory via linting rule (Rich Trott) #3157
• [b7179562aa] - test: load common.js in all tests (Rich Trott) #3157
• [bab555a1c1] - test: speed up stringbytes-external test (Evan Lucas) #3005
• [ddf258376d] - test: use normalize() for unicode paths (Roman Reiss) #3007
• [46876d519c] - test: remove arguments.callee usage (Roman Reiss) #3167
• [af10df6108] - tls: use parent handle's close callback (Fedor Indutny) #2991
• [9c2748bad1] - tools: remove leftover license boilerplate (Nathan Rajlich) #3225
• [5d9f83ff2a] - tools: apply linting to custom rules code (Rich Trott) #3195
• [18a8b2ec73] - tools: remove unused gflags module (Ben Noordhuis) #3220
• [e0fffca836] - util: fix for inspecting promises (Evan Lucas) #3221
• [8dfdee3733] - util: correctly inspect Map/Set Iterators (Evan Lucas) #3119
• [b5c51fdba0] - util: fix check for Array constructor (Evan Lucas) #3119

v4.2.1

• [b3cbd13340] - buffer: fix assertion error in WeakCallback (Fedor Indutny) #3329
• [102cb7288c] - doc: label v4.2.0 as LTS in changelog heading (Rod Vagg) #3343
• [c245a199a7] - lib: fix undefined timeout regression (Ryan Graham) [#3331](https://github.com/nodejs/node/pull/3331

下载

非常遗憾v4.2.0版本带有一个导致timer失败的bug，所以官方紧急发布了Argon的第二个版本：v4.2.1。

Windows 32-bit Installer: https://nodejs.org/dist/v4.2.1/node-v4.2.1-x86.msi

Windows 64-bit Installer: https://nodejs.org/dist/v4.2.1/node-v4.2.1-x64.msi

Windows 32-bit Binary: https://nodejs.org/dist/v4.2.1/win-x86/node.exe

Windows 64-bit Binary: https://nodejs.org/dist/v4.2.1/win-x64/node.exe

Mac OS X 64-bit Installer: https://nodejs.org/dist/v4.2.1/node-v4.2.1.pkg

Mac OS X 64-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-darwin-x64.tar.gz

Linux 32-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-linux-x86.tar.gz

Linux 64-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-linux-x64.tar.gz

SunOS 32-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-sunos-x86.tar.gz

SunOS 64-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-sunos-x64.tar.gz

ARMv6 32-bit Binary: Coming soon

ARMv7 32-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-linux-armv7l.tar.gz

ARMv8 64-bit Binary: https://nodejs.org/dist/v4.2.1/node-v4.2.1-linux-arm64.tar.gz

Source Code: https://nodejs.org/dist/v4.2.1/node-v4.2.1.tar.gz

Other release files: https://nodejs.org/dist/v4.2.1/

Documentation: https://nodejs.org/docs/v4.2.1/api/

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