Unexpected value PushNotificationComponent (only when --prod)

[arrayman]

Hello, i´m trying to migrate an old app from angular 2 cli version 1.0.0-beta.18. to angular 5 and i have this issue. when i try to do ng serve or ng build all goes without erros but if i do ng serve --aot or i do ng build --prod i see the next error message

ERROR in : Unexpected value 'PushNotificationComponent in c:/../node_modules/ng2-notifications/src/app/components/notification.component.d.ts' declared by the module 'AppModule in c:/.../src/app/app.module.ts'. Please add a @Pipe/@Directive/@Component annotation.

have i do something wrong?

additional info

Angular CLI: 1.7.4 Node: 8.11.1 OS: win32 x64 Angular: 5.2.10 ... animations, common, compiler, compiler-cli, core, forms ... http, language-service, platform-browser ... platform-browser-dynamic, router

@angular/cli: 1.7.4 @angular-devkit/build-optimizer: 0.3.2 @angular-devkit/core: 0.3.2 @angular-devkit/schematics: 0.3.2 @ngtools/json-schema: 1.2.0 @ngtools/webpack: 1.10.2 @schematics/angular: 0.3.2 @schematics/package-update: 0.3.2 typescript: 2.5.3 webpack: 3.11.0

thanks for sharing.