问题

yarn超时导致链接无法建立

解决方法

更换源

操作

查看yarn/npm源

#查看代理
yarn config list
npm config list

npm设置代理

npm config set proxy http://127.0.0.1:8080
npm config set https-proxy http://127.0.0.1:8080

npm删除代理

npm config delete proxy
npm config delete https-proxy

yarn设置代理

yarn config set proxy http://127.0.0.1:8080
yarn config set https-proxy http://127.0.0.1:8080

yarn删除代理

yarn config delete proxy
yarn config delete https-proxy

npm/yarn转换淘宝源和官方源

npm config set registry http://registry.npm.taobao.org/
npm config set registry https://registry.npmjs.org/

yarn config set registry http://registry.npm.taobao.org/
yarn config set registry https://registry.npmjs.org/