some suggested changes

src/app/dropdowns/dropdowns.component.ts

@@ -1,6 +1,6 @@
 import { Component, OnInit } from '@angular/core';
 import { Http, Response } from '@angular/http';
-import arrayShuffler from '../../helpers/array-shuffler';
+import arrayShuffler from '../helpers/array-shuffler';
 
 @Component({
   selector: 'app-dropdowns',
@@ -24,6 +24,7 @@ export class DropdownsComponent implements OnInit {
     // this.firmnessCheeses = firmnessCheeses;
   }
 
+  // I would like to see this call moved to a service and injected using dependency injection.
   getAnimal(animal) {
     const animalURL = 'http://cheeswhiz.herokuapp.com/api/cheese/animal/';
     this.http.get(animalURL + animal)
@@ -34,6 +35,7 @@ export class DropdownsComponent implements OnInit {
       });
   }
 
+  // I would like to see this call moved to a service and injected using dependency injection.
   getFirmness(firmness) {
     const firmnessURL = 'http://cheeswhiz.herokuapp.com/api/cheese/firmness/';
     this.http.get(firmnessURL + firmness)

src/app/helpers/array-shuffler.js

@@ -0,0 +1,11 @@
+//helper function to shuffle an array
+// moved this file inside your src folder.
+export default function arrayShuffler( array ) {
+  for ( let i = array.length - 1; i > 0; i-- ) {
+    let j = Math.floor( Math.random() * ( i + 1 ) );
+    let temp = array[ i ];
+    array[ i ] = array[ j ];
+    array[ j ] = temp;
+  }
+  return array;
+}

src/app/player/player.component.ts

@@ -1,7 +1,7 @@
 import { Component, OnInit } from '@angular/core';
 import { Http, Response } from '@angular/http';
 import { DomSanitizer, SafeResourceUrl, SafeUrl } from '@angular/platform-browser';
-import arrayShuffler from '../../helpers/array-shuffler';
+import arrayShuffler from '../helpers/array-shuffler';
 
 
 @Component({
@@ -27,15 +27,15 @@ export class PlayerComponent implements OnInit {
     this.playlists = [];
     this.url = 'https://embed.spotify.com/?uri=';
   }
-
+  // this call can also be moved to a different service and injected using dependency injection
   getSpotify() {
     this.loading = true;
-    let query = 'jazz blues';
-    let urlR = `https://api.spotify.com/v1/search?q=${query}&type=playlist&market=US&limit=50`;
+    const query = 'jazz blues';
+    const urlR = `https://api.spotify.com/v1/search?q=${query}&type=playlist&market=US&limit=50`;
     return this.http.get(urlR)
       .subscribe((res: Response) => {
-         let rObj = res.json();
-         let pArray = rObj.playlists.items;
+         const rObj = res.json();
+         const pArray = rObj.playlists.items;
          this.playlists = pArray.map((element) => {
            return element.uri;
       });
@@ -46,19 +46,20 @@ export class PlayerComponent implements OnInit {
 
   nextPlaylist() {
     this.loading = true;
-    if(this.count === 49) {
+    if ( this.count === 49 ) {
       this.count = -1;
     }
     this.count++;
-    let tempUrl = this.url + this.playlists[this.count];
+    const tempUrl = this.url + this.playlists[this.count];
     this.spotify = this.sanitizer.bypassSecurityTrustResourceUrl(tempUrl);
     setTimeout(() => {
       this.loading = false;
     }, 1500);
   }
 
   ngOnInit() {
-    this.spotify = this.sanitizer.bypassSecurityTrustResourceUrl('https://embed.spotify.com/?uri=spotify:user:gita1503:playlist:2qkXmULVYKfaQVLYQiuMJA');
+    this.spotify = this.sanitizer
+    .bypassSecurityTrustResourceUrl('https://embed.spotify.com/?uri=spotify:user:gita1503:playlist:2qkXmULVYKfaQVLYQiuMJA');
     this.getSpotify();
   }