refactor files

src/features/toeic/components/Timer.tsx

@@ -0,0 +1,14 @@
+interface TimerProps {
+  seconds?: number
+}
+
+export function Timer({ seconds = 0 }: TimerProps) {
+  const mins = Math.floor(seconds / 60)
+  const secs = seconds % 60
+
+  return (
+    <div className="font-mono text-lg font-semibold tabular-nums">
+      {String(mins).padStart(2, "0")}:{String(secs).padStart(2, "0")}
+    </div>
+  )
+}