Folder structure

src/sound.js

@@ -0,0 +1,29 @@
+// @ts-ignore
+export const audio = new (window.AudioContext || window.webkitAudioContext)();
+export const gain = audio.createGain(audio);
+gain.gain.setValueAtTime(0.05, audio.currentTime);
+gain.connect(audio.destination);
+
+export function createOsc() {
+  const osc = audio.createOscillator();
+  osc.type = 'triangle';
+  osc.connect(gain);
+  return osc;
+}
+
+export function playTickSound() {
+  const osc = createOsc();
+  osc.frequency.setValueAtTime(440, audio.currentTime);
+  osc.frequency.setValueAtTime(0, audio.currentTime + 0.005);
+  osc.start();
+  osc.stop(audio.currentTime + 0.005);
+}
+
+function clickInit() {
+  const osc = createOsc();
+  osc.start();
+  osc.stop();
+  document.removeEventListener('keydown', clickInit);
+}
+
+document.addEventListener('keydown', clickInit);