国内优秀npm镜像：
淘宝npm镜像
搜索地址：http://npm.taobao.org/
registry地址：http://registry.npm.taobao.org/
cnpmjs镜像
搜索地址：http://cnpmjs.org/
registry地址：http://r.cnpmjs.org/
镜像举例：
1.临时使用： 在命令行中临时指定registry:
$ npm install <module> --registry http://npm_registry
举例：
$ npm --registry https://registry.npm.taobao.org install express
2.持久使用:
通过 npm config set 命令修改registry, 或者修改npmrc 文件（比如： ~/.npmrc）
举例：
npm修改为淘宝源
$ npm config set registry https://registry.npm.taobao.org
配置后可通过下面方式来验证是否成功
npm info express
//npm切换为官方源
$ npm config set registry https://registry.npmjs.org
3.通过cnpm
使用
$ npm install -g cnpm --registry=https://registry.npm.taobao.org
使用cnpm install expresstall express
建议使用 cnpm：
$ npm install -g cnpm --registry=https://registry.npm.taobao.org
举例：
➜ jia_vue-element-admin git:(master) ✗ npm install -g cnpm --registry=https://registry.npm.taobao.org
npm WARN deprecated request@2.88.2: request has been deprecated, see https://github.com/request/request/issues/3142
/usr/local/bin/cnpm -> /usr/local/lib/node_modules/cnpm/bin/cnpm
+ cnpm@6.1.1
added 419 packages from 231 contributors, removed 326 packages, updated 131 packages and moved 5 packages in 18.599s
$ cnpm install
⠸ [22/47] Installing stream-browserify@^2.0.1[npminstall:get] retry GET http://registry.npm.taobao.org/extglob/download/extglob-0.3.2.tgz after 100ms, retry left 4, error: ResponseError: socket hang up (req "error"), GET http://registry.npm.taobao.org/extglob/download/extglob-0.3.2.tgz -1 (connected: true, keepalive socket: true, agent status: {"createSocketCount":13,"createSocketErrorCount":0,"closeSocketCount":3,"errorSocketCount":0,"timeoutSocketCount":0,"requestCount":699,"freeSockets":{},"sockets":{"registry.npm.taobao.org:80:":10},"requests":{"registry.npm.taobao.org:80:":32}})
headers: {}
⠙ [22/47] Installing requires-port@1.x.x[npminstall:get] retry GET http://registry.npm.taobao.org/util-deprecate after 100ms, retry left 4, error: ResponseError: socket hang up (req "error"), GET http://registry.npm.taobao.org/util-deprecate -1 (connected: true, keepalive socket: true, agent status: {"createSocketCount":14,"createSocketErrorCount":0,"closeSocketCount":4,"errorSocketCount":0,"timeoutSocketCount":0,"requestCount":725,"freeSockets":{},"sockets":{"registry.npm.taobao.org:80:":10},"requests":{"registry.npm.taobao.org:80:":29}})
headers: {}
⠙ [44/47] Installing hoek@2.x.xplatform unsupported babel-loader@7.1.2 › webpack@2.7.0 › watchpack@1.4.0 › chokidar@1.7.0 › fsevents@^1.0.0 Package require os(darwin) not compatible with your platform(linux)
[fsevents@^1.0.0] optional install error: Package require os(darwin) not compatible with your platform(linux)
✔ Installed 47 packages
✔ Linked 570 latest versions
✔ Run 0 scripts
peerDependencies link ajv@4.11.8 in /opt/uop-frontend/node_modules/_ajv-keywords@1.5.1@ajv-keywords unmet with /opt/uop-frontend/node_modules/ajv(5.2.2)
Recently updated (since 2017-08-22): 9 packages (detail see file /opt/uop-frontend/node_modules/.recently_updates.txt)
✔ All packages installed (666 packages installed from npm registry, used 1m, speed 344.94kB/s, json 617(7.53MB), tarball 20.59MB)
p.p1 {margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px 'Lucida Grande'; color: #3597fc}p.p2 {margin: 0.0px 0.0px 0.0px 0.0px; font: 13.0px 'Lucida Grande'}span.s1 {color: #000000}span.s2 {text-decoration: underline}span.s3 {text-decoration: underline ; color: #3597fc}table.t1 {border-collapse: collapse}td.td1 {border-style: solid; border-width: 1.0px 1.0px 1.0px 1.0px; border-color: #cbcbcb #cbcbcb #cbcbcb #cbcbcb; padding: 0.0px 5.0px 0.0px 5.0px}
$ npm --registry=https://registry.npm.taobao.org install
npm WARN optional SKIPPING OPTIONAL DEPENDENCY: fsevents@^1.0.0 (node_modules/chokidar/node_modules/fsevents):
npm WARN network SKIPPING OPTIONAL DEPENDENCY: getaddrinfo ENOTFOUND registry.npm.taobao.org registry.npm.taobao.org:443
问题及解决
问题：
$ npm install -g cnpm --registry=https://registry.npm.taobao.org
....
[ ...] / extract:moment: verb gentlyRm don't care about contents; nuking /usr/lib/node_modules/.staging/moment-846e294d/node_modules
...... 持续很久.......
[ ...] / preinstall:cnpm: sill doParallel preinstall 643
...... 持续很久.......
[ ...] \ build:tunnel-agent: verb linkMans tunnel-agent@0.6.0
解决：
重复几次，多等些时间，后来就好了。
扩展阅读
使用npm安装一些包失败了的看过来（npm国内镜像介绍）
http://cnodejs.org/topic/4f9904f9407edba21468f31e
简介：
1.通过config命令
npm config set registry https://registry.npm.taobao.org npm info underscore （如果上面配置正确这个命令会有字符串response）
2.命令行指定
npm --registry https://registry.npm.taobao.org info underscore
3.编辑~/.npmrc
加入下面内容
registry = https://registry.npm.taobao.org
搜索镜像: [https://npm.taobao.org](https://npm.taobao.org/)
建立或使用镜像,参考: [https://github.com/cnpm/cnpmjs.org](https://github.com/cnpm/cnpmjs.org)
淘宝 NPM 镜像
https://npm.taobao.org/
简介：
介绍了NPM镜像源的使用。
$ npm install -g cnpm --registry=https://registry.npm.taobao.org
$ cnpm install [name]
国内优秀npm镜像推荐及使用
http://blog.csdn.net/cengjingcanghai123/article/details/45045265
简介：
淘宝npm镜像
搜索地址：http://npm.taobao.org/
registry地址：http://registry.npm.taobao.org/
cnpmjs镜像
搜索地址：http://cnpmjs.org/
registry地址：http://r.cnpmjs.org/
简介：
cnpmjs.org: Private npm registry and web for Company
So cnpm is meaning: Company npm.
node.js模块依赖及版本号
http://www.tuicool.com/articles/2aUB7j
简介：
Node.js最重要的一个文件就是package.json，其中的配置参数决定了功能。例如下面就是一个例子
nodejs npm常用命令
http://www.cnblogs.com/linjiqin/p/3765772.html
简介：
介绍了比较多的项目。
npm是一个node包管理和分发工具，已经成为了非官方的发布node模块（包）的标准。有了npm，可以很快的找到特定服务要使用的包，进行下载、安装以及管理已经安装的包。
npm使用国内源镜像（npm下载包失败的问题）
https://www.jianshu.com/p/0deb70e6f395
https://blog.csdn.net/pkx1993/article/details/87987292
简介：
这里的介绍很好..
简介：
博客迁移到GitHub，采用issues方式发布
国内优秀npm镜像推荐及使用
