升级Angular 6时的Webpack警告

Question

我将Angular从6.0.0版本升级到6.1.3。运行ng update @angular/core后，我收到以下警告：

npm WARN @ngtools/webpack@6.0.8 requires a peer of typescript@~2.4.0 || 
~2.5.0 || ~2.6.0 || ~2.7.0 but none is installed. You must install 
peer dependencies yourself.

peer of typescript是什么意思？根据{{​​1}}，安装了打字稿。 ng -version正在寻找什么版本？

ng -version：

@ngtools/webpack

Answer 1

将“ @ angular-devkit / build-angular”更新为0.7.4，以修复上述错误。