Basic Example

1) app.module.ts

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

import { BrowserModule } from "@angular/platform-browser";

import { HelloComponent } from './app.component';

@NgModule({
    imports: [BrowserModule],
    declarations: [HelloComponent],
    bootstrap:[HelloComponent]
})
export class AppModule { }

2) app.component.ts

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

@Component({
    selector: 'app-root',
    template: 'Basic Example'
})

export class HelloComponent{

}