NPM升级package.json中的版本号以及更换数据源

npm install -g npm-check-updates

ncu //显示当前目录下项目中所有新的依赖包

ncu -u //更新项目package文件

npm install



pm install -g nrm

nrm ls //查看镜像源, *表示正在使用的

* 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/

nrm use taobao //切换