lib/timer.js
function cleanup() {
    if (url) { URL.revokeObjectURL(url); }
    if (ww) { ww.terminate(); }
    if (timeout) { clearTimeout(timeout); }
  }
function cleanup() {
    if (url) { URL.revokeObjectURL(url); }
    if (ww) { ww.terminate(); }
    if (timeout) { clearTimeout(timeout); }
  }
function cleanup ( ) { if ( url ) { URL . revokeObjectURL ( url ) ; } if ( ww ) { ww . terminate ( ) ; } if ( timeout ) { clearTimeout ( timeout ) ; } }
Remove created data on fallback
Remove created data on fallback