// app.module.ts

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

import { AppComponent } from './app.component';
import { NgMarkedModule } from 'ng-marked';

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

// app.component.ts

import { Component } from '@angular/core';
import { NgMarkedOptions, NgMarked, NgMarkedService } from 'ng-marked';

@Component({
  selector: 'app-root',
  template: `
    <ng-marked [src]="src" [opt]="opt"></ng-marked>
  `
})
export class AppComponent {
  src = '# test';
  opt: NgMarkedOptions = {};
  marked: NgMarked;

  constructor(
    private readonly _ngMarkedService: NgMarkedService
  ) {
    this.marked = _ngMarkedService.marked;
  }
}