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nrm(npm registry manager )是npm的镜像源管理工具，有时候国外资源太慢，使用这个就可以快速地在 npm 源间切换。

# 全局安装alex:scaffold $ npm i nrm -g# 查看镜像列表alex:scaffold $ nrm ls  npm -------- https://registry.npmjs.org/  yarn ------- https://registry.yarnpkg.com/  cnpm ------- http://r.cnpmjs.org/* taobao ----- https://registry.npm.taobao.org/  nj --------- https://registry.nodejitsu.com/  npmMirror -- https://skimdb.npmjs.com/registry/  edunpm ----- http://registry.enpmjs.org/  # 添加新的镜像alex:scaffold $ nrm add dev http://localhost:4873/# 查看镜像列表alex:scaffold $ nrm ls  npm -------- https://registry.npmjs.org/  yarn ------- https://registry.yarnpkg.com/  cnpm ------- http://r.cnpmjs.org/* taobao ----- https://registry.npm.taobao.org/  nj --------- https://registry.nodejitsu.com/  npmMirror -- https://skimdb.npmjs.com/registry/  edunpm ----- http://registry.enpmjs.org/  dev -------- http://localhost:4873/  # 切换镜像到devalex:scaffold $ nrm use dev	Registry has been set to: http://localhost:4873/# 查看当前镜像alex:scaffold $ nrm currentdev# 删除dev镜像alex:scaffold $ nrm del dev

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