Angular 8 ?

[blondie63]

Because i've some problem to upgrade my Ionic 4 app from Angular 7 to 8 i've tried this your app, but i've same warnings:
npm WARN @ionic/angular@4.6.0 requires a peer of @angular/compiler-cli@^7.2.1 but none is installed

What's wrong ?
Have you tried to upgrade all dependencies ?

 @angular/common                      ^8.0.2  →    ^8.0.3 
 @angular/core                        ^8.0.2  →    ^8.0.3 
 @angular/forms                       ^8.0.2  →    ^8.0.3 
 @angular/platform-browser            ^8.0.2  →    ^8.0.3 
 @angular/platform-browser-dynamic    ^8.0.2  →    ^8.0.3 
 @angular/router                      ^8.0.2  →    ^8.0.3 
 @ionic-native/core                   ^5.0.0  →    ^5.8.0 
 @ionic-native/splash-screen          ^5.0.0  →    ^5.8.0 
 @ionic-native/status-bar             ^5.0.0  →    ^5.8.0 
 @ionic/angular                       ^4.1.0  →    ^4.6.0 
 core-js                              ^2.5.4  →    ^3.1.4 
 rxjs                                 ~6.5.1  →    ~6.5.2 
 tslib                                ^1.9.0  →   ^1.10.0 
 @angular-devkit/architect           ~0.13.8  →  ~0.800.6 
 @angular-devkit/build-angular      ~0.800.4  →  ~0.800.6 
 @angular-devkit/core                 ~7.3.8  →    ~8.0.6 
 @angular-devkit/schematics           ~7.3.8  →    ~8.0.6 
 @angular/cli                         ~8.0.4  →    ~8.0.6 
 @angular/compiler                    ~8.0.2  →    ~8.0.3 
 @angular/compiler-cli                ~8.0.2  →    ~8.0.3 
 @angular/language-service            ~8.0.2  →    ~8.0.3 
 @ionic/angular-toolkit               ~1.5.1  →    ~2.0.0 
 @ionic/lab                            2.0.4  →     2.0.5 
 @types/jasmine                       ~2.8.8  →   ~3.3.13 
 @types/jasminewd2                    ~2.0.3  →    ~2.0.6 
 @types/node                         ~12.0.0  →  ~12.0.10 
 codelyzer                            ~4.5.0  →    ~5.1.0 
 jasmine-core                        ~2.99.1  →    ~3.4.0 
 karma-coverage-istanbul-reporter     ~2.0.1  →    ~2.0.5 
 karma-jasmine                        ~1.1.2  →    ~2.0.1 
 karma-jasmine-html-reporter          ^0.2.2  →    ^1.4.2 
 protractor                           ~5.4.0  →    ~5.4.2 
 tslint                              ~5.17.0  →   ~5.18.0```