转载

Node.js v7.8.0 发布

看到Node.js这个名字，初学者可能会误以为这是一个Javascript应用，事实上，Node.js采用C++语言编写而成，是一个Javascript的运行环境。为什么采用C++语言呢？据Node.js创始人Ryan Dahl回忆，他最初希望采用Ruby来写Node.js，但是后来发现Ruby虚拟机的性能不能满足他的要求，后来他尝试采用V8引擎，所以选择了C++语言。既然不是Javascript应用，为何叫.js呢？因为Node.js是一个Javascript的运行环境。Node.js是一个后端的Javascript运行环境（支持的系统包括Linux、Windows和Mac等），这意味着你可以编写系统级或者服务器端的Javascript代码，交给Node.js来解释执行，Node.js采用了Google Chrome浏览器的V8引擎，性能很好，同时还提供了很多系统级的API，如文件操作、网络编程等。浏览器端的Javascript代码在运行时会受到各种安全性的限制，对客户系统的操作有限。相比之下，Node.js则是一个全面的后台运行时，为Javascript提供了其他语言能够实现的许多功能。

更新日志

buffer:
- do not segfault on out-of-range index (Timothy Gu) #11927
crypto:
- Fix memory leak if certificate is revoked (Tom Atkinson) #12089
deps:
- upgrade npm to 4.2.0 (Kat Marchán) #11389
- fix async await desugaring in V8 (Michaël Zasso) #12004
readline:
- add option to stop duplicates in history (Danny Nemer) #2982

Commits

[51c8d8088a] - Partial revert "tls: keep track of stream that is closed" (Trevor Norris) #11947
[751c1153a4] - benchmark: check end() argument to be > 0 (Vse Mozhet Byt) #12030
[210250465a] - benchmark: update obsolete information pointer (Rich Trott) #12026
[7aeeee3276] - benchmark: repair the fs/readfile benchmark (Sorin Baltateanu) #7818
[90acb773be] - benchmark: allow multiple values for same config (Nikolai Vavilov) #11819
[2f4ad6fea2] - benchmark: harmonize progress bar + stderr output (Vse Mozhet Byt) #11925
[d62ddbe145] - benchmark: fix fs/bench-realpathSync.js (Vse Mozhet Byt) #11904
[85eb1bc0a9] - benchmark: remove v8ForceOptimization calls (Lucas Lago) #11908
[17d16e8f3d] - buffer: remove unneeded eslint-disable comment (Rich Trott) #11906
[fb41ee3983] - build: add lint option to vcbuild.bat help (Morgan Brenner) #11992
[3e4ecca0be] - build: don't create directory for NDK toolchain (TheBeastOfCaerbannog) #11916
[a64aa442c1] - crypto: fix memory leak if certificate is revoked (Tom Atkinson) #12089
[2767e2d3cc] - (SEMVER-MINOR) deps: upgrade npm to 4.2.0 (Kat Marchán) #11389
[d22346de40] - deps: fix async await desugaring in V8 (Michaël Zasso) #12004
[fade55b025] - doc: clarify out-of-bounds behavior of buf[index] (Nikolai Vavilov) #11286
[63a19c7012] - doc: update and modernize examples in fs.ms (Vse Mozhet Byt) #12035
[4b5f177e3d] - doc: fix https.timeout docs (Ahmad Nassri) #12039
[af051f6528] - doc: fix http properties documented as methods (Ahmad Nassri) #12039
[18a586a278] - doc: edit the benchmark guide (Rich Trott) #12041
[5e3d429613] - doc: stdout/err/in are all Duplex streams (Sebastian Van Sande) #11194
[7f6b03fd0f] - doc: fix process.stdout fd number (Fumiya KARASAWA) #12055
[1f7fe55c97] - doc: add richardlau to collaborators (Richard Lau) #12020
[924f34606d] - doc: update collaborator email address (Rich Trott) #11996
[41bec5cff4] - doc: correct info in child_process.md (Vse Mozhet Byt) #11949
[96ad336d9e] - doc: remove superfluous sample assert code (Rich Trott) #11933
[486bd1bd9b] - doc: require uses fs root for '/' prefix (Bradley Farias) #11897
[04fa28e6dc] - doc: fix gitter badge in README (Roman Reiss) #11944
[68b23be51f] - doc: add missing word in stream.md (Jyotman Singh) #11914
[0f2642ee36] - errors: remove needless lazyAssert (DavidCai) #11891
[5bdd54925a] - lib: add comment to script eval _tickCallback (Gibson Fahnestock) #12050
[7347860966] - lib: clarify the usage of 'else' (Jackson Tian) #11148
[837ff4ba59] - lib: remove an unnecessary coverage check (Jeremiah Senkpiel) #12023
[6c803db7b9] - lib: fix event race condition with -e (Ben Noordhuis) #11958
[ac92d0249b] - net: refactor net module to module.exports (Claudio Rodriguez) #11698
[2462fd8009] - process: maintain constructor descriptor (Bryan English) #9306
[91a2700721] - readline: rename deDupeHistory option (Danny Nemer) #11950
[8ab26cf508] - (SEMVER-MINOR) readline: add option to stop duplicates in history (Danny Nemer) #2982
[6a6c431eec] - src: use persistent strings from node::Environment (Ben Noordhuis) #11945
[d0c2d67083] - src: add native URL class (James M Snell) #11801
[019a20adb5] - src: make PercentDecode return void (Timothy Gu) #11922
[d6da1705cd] - src: ensure that fd 0-2 are valid on windows (Bartosz Sosnowski) #11863
[59f71f5661] - src, buffer: do not segfault on out-of-range index (Timothy Gu) #11927
[4051184106] - stream_base,tls_wrap: notify on destruct (Trevor Norris) #11947
[d8b71be183] - test: fix misleading comment (Franziska Hinkelmann) #12048
[8b2b93f148] - test: mark child-process-exec-kill-throws flaky (Gibson Fahnestock) #12054
[948b99deab] - test: fix broken tests in test-buffer-includes (Alexey Orlenko) #12040
[d112aad78b] - test: replace throw with common.fail (Dejon "DJ" Gill) #9700
[41284fbc5b] - test: cover thrown errors from exec() kill (cjihrig) #11038
[414df6c93b] - test: test validity of prefix in mkdtempSync (Luca Maraschi) #12009
[1c0435b1f3] - test: add regex for expected error message (John F. Mercer) #12011
[a73dea9499] - test: add second argument to assert.throws() (Rj Bernaldo) #12016
[ade64e61cd] - test: refactor test-cluster-disconnect (Rich Trott) #11981
[3d21bfe6b9] - test: invalid chars in http client path (Luca Maraschi) #11964
[e70ed3cb31] - test: improve test-vm-cached-data.js (Nick Peleh) #11974
[b48f13af95] - test: add minimal test for net benchmarks (Rich Trott) #11979
[764a00e6e5] - test: add test for url (Yuta Hiroto) #11999
[bb2de4a5a1] - test: do not use more command on Windows (Vse Mozhet Byt) #11953
[55a112689a] - test: add test for child_process.execFile() (Rich Trott) #11929
[9ba551f7e3] - test: fix flaky test-tls-socket-close (Rich Trott) #11921
[114f9d619d] - test: add hasCrypto check to tls-socket-close (Daniel Bevenius) #11911
[169f187f16] - test: synchronize WPT url setters tests data (Daijiro Wachi) #11887
[4b1b6b85a9] - timers: fix not to close reused timer handle (Shigeki Ohtsu) #11646
[fd93622f8a] - tls: fix SecurePair external memory reporting (Ben Noordhuis) #11896
[126dcb76af] - url: name anonymous functions in url (Pedro lima) #9225
[f6755182e5] - url: show input in parse error message (Joyee Cheung) #11934
[c51d925c84] - url: restrict setting protocol to "file" (Daijiro Wachi) #11887