refactor: move deepComparePlayList to utils

Author: LonelyCpp

src/utils.js

@@ -0,0 +1,20 @@
+/**
+ * deep compares two values for the "playlist prop"
+ *
+ * @param {string | string[]} lastPlayList
+ * @param {string | string[]} playList
+ * @returns true if the two are equal
+ */
+const deepComparePlayList = (lastPlayList, playList) => {
+  if (lastPlayList === playList) {
+    return true;
+  }
+
+  if (Array.isArray(lastPlayList) && Array.isArray(playList)) {
+    return lastPlayList.join('') === playList.join('');
+  }
+
+  return false;
+};
+
+export {deepComparePlayList};