升級Angular 6時的Webpack警告

Question

我將Angular從6.0.0版本升級到6.1.3。 運行ng update @angular/core我得到以下警告：

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的peer of typescript什么意思？ 根據ng -version ，安裝了typescript。 @ngtools/webpack正在尋找什么版本？

ng -version：

Angular CLI: 6.1.4
Node: 8.9.1
OS: win32 x64
Angular: 6.1.3
... animations, common, compiler, compiler-cli, core, forms
... http, language-service, platform-browser
... platform-browser-dynamic, router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.6.8
@angular-devkit/build-angular     0.6.8
@angular-devkit/build-optimizer   0.6.8
@angular-devkit/core              0.6.8
@angular-devkit/schematics        0.7.4
@angular/cli                      6.1.4
@ngtools/webpack                  6.0.8
@schematics/angular               0.7.4
@schematics/update                0.7.4
rxjs                              6.2.2
typescript                        2.9.2
webpack                           4.8.3

Answer 1

將“ @ angular-devkit / build-angular”更新為0.7.4以修復上述錯誤。