cli cordova更新
npm update -g cordova ionic
更新后出现错误
Error: Cannot find module '@ionic/cli-utils/bootstrap' at Function.Module._resolveFilename (module.js:469:15) at Function.Module._load (module.js:417:25) at Module.require (module.js:497:17) at require (internal/module.js:20:19) at Object.<anonymous> (C:\Users\gu\AppData\Roaming\npm\node_modules\ionic\bin\ionic:15:17) at Module._compile (module.js:570:32) at Object.Module._extensions..js (module.js:579:10) at Module.load (module.js:487:32) at tryModuleLoad (module.js:446:12) at Function.Module._load (module.js:438:3)
cnpm install -g ionic@latest（通过淘宝镜像重新安装ionic）
ionic serve
出现
? Looks like a fresh checkout! No ./node_modules directory found. Would you like to install project dependencies? (Y/n)
