ng-select autocomplete

<!DOCTYPE html>
<html>

  <head>
    <base href="." />
    <title>angular playground</title>
    <link href="https://unpkg.com/@ng-select/ng-select/themes/default.theme.css" rel="stylesheet">
    <script src="https://unpkg.com/core-js@2.4.1/client/shim.min.js"></script>
    <script src="https://unpkg.com/zone.js/dist/zone.js"></script>
    <script src="https://unpkg.com/zone.js/dist/long-stack-trace-zone.js"></script>
    <script src="https://unpkg.com/reflect-metadata@0.1.3/Reflect.js"></script>
    <script src="https://unpkg.com/systemjs@0.19.31/dist/system.js"></script>
    <script src="config.js"></script>
    <script>
    System.import('app')
      .catch(console.error.bind(console));
  </script>
  <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.css">
    <script src="https://use.fontawesome.com/7d64cb55fa.js"></script>
    <link rel="stylesheet" href="style.css">
  </head>

  <body>
    <select-autocomplete>
    loading...
  </select-autocomplete>
  </body>

</html>

import {Component, NgModule, EventEmitter, ChangeDetectorRef} from '@angular/core';
import {BrowserModule} from '@angular/platform-browser';
import {FormsModule} from '@angular/forms';
import {NgSelectModule, NgOption} from '@ng-select/ng-select';
import {HttpClient, HttpClientModule} from '@angular/common/http';

import {Observable} from 'rxjs/Observable';
import {catchError, map, debounceTime, switchMap} from 'rxjs/operators';
import {of} from 'rxjs/observable/of';

@Component({
    selector: 'select-autocomplete',
    template: `
        <label>Search with autocomplete in Github accounts</label>
        <ng-select [items]="items"
                    [multiple]="true"
                    [addTag]="true"
                   bindLabel="login"
                   placeholder="Find your Github account"
                   [typeahead]="typeahead"
                   [(ngModel)]="githubAccount">
            <ng-template ng-option-tmp let-item="item">
                <img [src]="item.avatar_url" width="20px" height="20px"> {{item.login}}
            </ng-template>
        </ng-select>
        <p>
            Selected github account:
            <span *ngIf="githubAccount">
                <img [src]="githubAccount.avatar_url" width="20px" height="20px"> {{githubAccount.login}}
            </span>
        </p>
    `
})
export class SelectAutocompleteComponent {

    githubAccount: any;
    items = [];
    typeahead = new EventEmitter<string>();

    constructor(private http: HttpClient, private cd: ChangeDetectorRef) {
        this.typeahead
            .pipe(
                debounceTime(200),
                switchMap(term => this.loadGithubUsers(term))
            )
            .subscribe(items => {
                this.items = items;
                this.cd.markForCheck();
            }, (err) => {
                console.log('error', err);
                this.items = [];
                this.cd.markForCheck();
            });
    }

    loadGithubUsers(term: string): Observable<any[]> {
        return this.http.get<any>(`https://api.github.com/search/users?q=${term}`).pipe(
            catchError(() => of(({items: []}))),
            map(rsp => rsp.items),
        );
    }
}

@NgModule({
  imports: [
    BrowserModule,
    FormsModule,
    NgSelectModule,
    HttpClientModule
  ],
  declarations: [ SelectAutocompleteComponent ],
  bootstrap: [ SelectAutocompleteComponent ]
})
export class AppModule {}

//main entry point
import {platformBrowserDynamic} from '@angular/platform-browser-dynamic';
import {AppModule} from './app';

platformBrowserDynamic().bootstrapModule(AppModule)

System.config({
  //use typescript for compilation
  transpiler: 'typescript',
  //typescript compiler options
  typescriptOptions: {
    emitDecoratorMetadata: true
  },
  paths: {
    'npm:': 'https://unpkg.com/'
  },
  //map tells the System loader where to look for things
  map: {
    
    'app': './src',
    
    '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
    '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
    '@angular/common/http': 'npm:@angular/common/bundles/common-http.umd.js',
    '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
    '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
    '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
    '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
    
    
    '@ng-select/ng-select': 'npm:@ng-select/ng-select/bundles/ng-select.umd.js',
    'rxjs': 'npm:rxjs',
    'typescript': 'npm:typescript@2.2.1/lib/typescript.js',
    'tslib': 'npm:tslib'
  },
  //packages defines our app package
  packages: {
    app: {
      main: './main.ts',
      defaultExtension: 'ts'
    },
    rxjs: {
      defaultExtension: 'js'
    },
    '@ng-select/ng-select': {
      defaultExtension: 'js'
    }
  }
});

body {
  padding: 10px;
}

p {
  margin-top:20px;
}

label {
  margin-top: 20px;
}