在操做官方實例Create React App時,須要執行指令:react
create-react-app my-app
fetchMetadata: sill mapToRegistry uri http://registry.npmjs.org/whatwg-fetch
npm config set registry https://registry.npm.taobao.org -- 配置後可經過下面方式來驗證是否成功 npm config get registry -- 或npm info express