info There appears to be trouble with your network connection

使用 npx create-react-app 項目名 新建項目時，報錯；

yarn add v1.22.4
info No lockfile found.
[1/4] 🔍  Resolving packages...
info There appears to be trouble with your network connection. Retrying...
info There appears to be trouble with your network connection. Retrying...

解決途徑：

第一步：更換淘寶鏡像

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

第二步：按下面的操做

1. 全局安裝nrm: npm install nrm -g;
2. 查看鏡像源: nrm ls;
3. 切換鏡像源: nrm use npm;
4. 安裝須要的模塊: npm install <package-name>;
5. 若是須要安裝所有依賴: npm install;