npm install --save ngx-phone-number-input
yarn add ngx-phone-number-input
import { NgxPhoneNumberInputModule } from 'ngx-phone-number-input';
import { ReactiveFormsModule } from '@angular/forms';
@NgModule({
declarations: [AppComponent],
imports: [NgxPhoneNumberInputModule, ReactiveFormsModule],
bootstrap: [AppComponent]
})
export class AppModule {}