npm install -g cnpm --registry=https://registry.npm.taobao.org
npm config set registry https://registry.npm.taobao.org
cnpm切换为npm: npm config set registry https://registry.npmjs.org
npm config get registry
成功则显示(npm切换cnpm): https://registry.npm.taobao.org/
成功则显示(cnpm切换npm): https://registry.npmjs.org/
npm install npm@7.21.1 -g
原文:https://www.cnblogs.com/papercy/p/15213217.html