npm uninstall -g angular-cli
npm uninstall -g @angular/cli
npm cache clean --force
Delete the C:\Users\YOU\AppData\Roaming\npm\node_modules\@angular folder.
然后用 ng -v 检查
npm install -g @angular/cli@latest
npm install --save-dev @angular/cli@latest
删除
C:\Users\chenchao\AppData\Roaming\npm\node_modules\@angular\cli\node_modules\ansi-regex
npm
npm cache
如果遇到
Your global Angular CLI version (6.0.8) is greater than your local
version (6.0.7). The local Angular CLI version is used.
To disable this warning use "ng config -g cli.warnings.versionMismatch false".
运行
ng config -g cli.warnings.versionMismatch false
禁止提示
就可以了!