发布于 2015-03-08 07:03:06 | 169 次阅读 | 评论: 0 | 来源: 网友投递
IO.js 服务器端 JS 引擎
IO.js 是为 V8 引擎编写的基于事件 IO 的实现。io.js可以说是彻底从NodeJS里分离出来的一条分支。既然是分支，io.js便也基本兼容NodeJS的各种API，连执行指令也依旧兼容Node的 node XXX （新指令是 iojs XXX ）。不过io.js采纳了最新版本的V8引擎，并也将会时刻跟进V8的更新，也因此我们可以轻松地在io.js上抢先使用那些JavaScript ECMA-262规范上的新特性。
io.js 1.5.0 发布，此版本值得关注的改进如下：
buffer: 新 Buffer#indexOf() 方法
fs: 在 'fs' 方法的 options 对象属性不再执行一个 hasOwnProperty() 检测
tls: 解决了 PayPal 报告的类似 TLS 的内存泄漏问题
npm: 升级 npm 到 2.7.0 版本
145af65#4887 Replace calls to thenode-gyp script bundled with npm by passing the--node-gyp=/path/to/node-gyp option to npm. Swap in pangyp or a version of node-gyp modified to work better with io.js without having to touch npm's code! (@ackalker)
2f6a1df#1999 Only run stop and startscripts (plus their pre- and post- scripts) when there's no restart script defined. This makes it easier to support graceful restarts of services managed by npm. (@watilde /@scien)
448efd0#2853 Add support for --dev and--prod to npm ls, so that you can list only the trees of production or development dependencies, as desired. (@watilde)
a0a8777#7463 Split the list printed bynpm run-script into lifecycle scripts and scripts directly invoked via npm run-script. (@watilde)
a5edc17#6749 init-package-json@1.3.1: Support for passing scopes to npm init so packages are initialized as part of that scope / organization / team. (@watilde)
TC: Colin Ihrig (@cjihrig) resigned from the TC due to his desire to do more code and fewer meetings.
Possible TLS-related memory leak, details at #1075.
Windows still reports some minor test failures and we are continuing to address all of these as a priority. See #1005.
Surrogate pair in REPL can freeze terminal #690
Not possible to build io.js as a static library #686
process.send() is not synchronous as the docs suggest, a regression introduced in 1.0.2, see #760 and fix in #774
Calling dns.setServers() while a DNS query is in progress can cause the process to crash on a failed assertion #894
详细内容请看发行说明，此版本现已提供下载：https://github.com/iojs/io.js/archive/v1.5.0.zip。
IO.js 是为 V8 引擎编写的基于事件 IO 的实现。io.js可以说是彻底从NodeJS里分离出来的一条分支。既然是分支，io.js便也基本兼容NodeJS的各种API，连执行指令也依旧兼容Node的 node XXX （新指令是 iojs XXX ）。不过io.js采纳了最新版本的V8引擎，并也将会时刻跟进V8的更新，也因此我们可以轻松地在io.js上抢先使用那些JavaScript ECMA-262规范上的新特性。
构建要求：
* `gcc` and `g++` 4.8 or newer, or
* `clang` and `clang++` 3.3 or newer
* Python 2.6 or 2.7
* GNU Make 3.81 or newer
* libexecinfo (FreeBSD and OpenBSD only)