feat: migration to electron + next complete

renderer/components/StopWatch/index.js

@@ -0,0 +1,30 @@
+import React, { useState, useEffect } from 'react';
+
+const StopWatch = () => {
+  const [milliseconds, setMilliseconds] = useState(0);
+
+  const tickInterval = 200;
+  const tick = () => {
+    setMilliseconds(milliseconds + tickInterval);
+  };
+
+  useEffect(() => {
+    let timerID = setInterval(() => tick(), tickInterval);
+    return () => {
+      clearInterval(timerID);
+    };
+  });
+
+  if(milliseconds < 1000) {
+    return 'Loading...';
+  }
+
+  let seconds = milliseconds/1000;
+  return (
+    <span>
+      {seconds.toFixed(1)}s
+    </span>
+  )
+};
+
+export default StopWatch;