arrow funcs

app.js

@@ -1,8 +1,6 @@
 navigator.mediaDevices.getUserMedia({
-	audio: true,
-	video: true
-})
-	.then(function(stream) {
+	audio: true
+}).then((stream) => {
 		const audioContext = new AudioContext();
 		const analyser = audioContext.createAnalyser();
 		const microphone = audioContext.createMediaStreamSource(stream);
@@ -14,7 +12,7 @@ navigator.mediaDevices.getUserMedia({
 		microphone.connect(analyser);
 		analyser.connect(scriptProcessor);
 		scriptProcessor.connect(audioContext.destination);
-		scriptProcessor.onaudioprocess = function() {
+		scriptProcessor.onaudioprocess = () => {
 			const array = new Uint8Array(analyser.frequencyBinCount);
 			analyser.getByteFrequencyData(array);
 			const arraySum = array.reduce((a, value) => a + value, 0);
@@ -23,7 +21,7 @@ navigator.mediaDevices.getUserMedia({
 			// colorPids(average);
 		};
 	})
-	.catch(function(err) {
+	.catch((err) => {
 		/* handle the error */
 		console.error(err);
 	});