import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { AngularCounterModule } from 'angular-input-counter';

@NgModule({
  declarations: [
    AppComponent
  ],
  imports: [
    AngularCounterModule,
  ],
  providers: [],
  bootstrap: [AppComponent]
})
export class AppModule { }

<angular-input-counter 
        [min]="5"  
        [max]="20"   
        [step]="1"  
        [readonly]="true"  
        [(counterValue)]="counterValue" 
        [color]="'primary'"></angular-input-counter>