No languages were registred inside lazy module. about ngx-highlightjs HOT 6 CLOSED

import { HIGHLIGHT_OPTIONS } from 'ngx-highlightjs';

import xml from 'highlight.js/lib/languages/xml';
import scss from 'highlight.js/lib/languages/scss';
import typescript from 'highlight.js/lib/languages/typescript';

export function hljsLanguages() {
  return [
    {name: 'typescript', func: typescript},
    {name: 'scss', func: scss},
    {name: 'xml', func: xml}
  ];
}

@NgModule({
  providers: [
    {
      provide: HIGHLIGHT_OPTIONS,
      useValue: {
        languages: hljsLanguages
      }
    }
  ]
})

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import { HighlightModule } from 'ngx-highlightjs';

import { GuidelinesRoutingModule } from './guidelines-routing.module';
import { ButtonsComponent } from './buttons/buttons.component';

import xml from 'highlight.js/lib/languages/xml';
import scss from 'highlight.js/lib/languages/scss';
import typescript from 'highlight.js/lib/languages/typescript';

export function hljsLanguages() {
  return [
    {name: 'typescript', func: typescript},
    {name: 'scss', func: scss},
    {name: 'xml', func: xml}
  ];
}

@NgModule({
  declarations: [ButtonsComponent],
  imports: [
    CommonModule,
    GuidelinesRoutingModule,
    HighlightModule.forRoot({
      languages: hljsLanguages
    })
  ]
})
export class GuidelinesModule { }

import { NgModule } from '@angular/core';
import { Routes, RouterModule } from '@angular/router';

import { ButtonsComponent } from './buttons/buttons.component';

const routes: Routes = [
  {
    path: 'buttons',
    component: ButtonsComponent
  }
];

@NgModule({
  imports: [
    RouterModule.forChild(routes)
  ],
  exports: [RouterModule]
})
export class GuidelinesRoutingModule { }

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

import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';

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