Create ButtonGroup with icons in Angular ButtonGroup component

import { Component } from '@angular/core';

@Component({
    selector: 'app-root',
    template: `<!-- To render ButtonGroup. -->
               <div class='e-btn-group'>
                  <button ejs-button iconCss='e-icons e-left-icon'>Left</button>
                  <button ejs-button iconCss='e-icons e-middle-icon'>Right</button>
                  <button ejs-button iconCss='e-icons e-right-icon'>Middle</button>
                </div>`
})

export class AppComponent { }

import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { ButtonModule } from '@syncfusion/ej2-angular-buttons';
import { AppComponent } from './app.component';
import { enableRipple } from '@syncfusion/ej2-base';

enableRipple(true);

/**
 * Module
 */
@NgModule({
    imports: [
        BrowserModule,
        ButtonModule
    ],
    declarations: [AppComponent],
    bootstrap: [AppComponent]
})
export class AppModule { }

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { enableProdMode } from '@angular/core';
import { AppModule } from './app.module';

enableProdMode();
platformBrowserDynamic().bootstrapModule(AppModule);

#loader {
  color: #008cff;
  height: 40px;
  width: 30%;
  position: absolute;
  font-family:  'Helvetica Neue','calibiri';
  font-size:16px;
  top: 45%;
  left: 45%;
}
.e-btn-group {
  margin: 25px 5px 20px 20px;
}

.e-left-icon::before {
    content: '\e33a';
}

.e-right-icon::before {
    content: '\e34d';
}

.e-middle-icon::before {
    content: '\e35e';
}