Installation
<script type="text/javascript" src="https://unpkg.com/keyboard-tracker"></script>Usage
const tracker = new KeyboardTracker((e) => console.log(e), { history: true })
// press 'a' key
// => { key: 'a', pressed: true, total: 1, latest: 1520181191972, history: [{ state: 'down', timestamp: 1520181191972 }]}