setInterval.js (240B)
1 var interval1 = setInterval(function() { 2 clearInterval(interval1); 3 postMessage(1); 4 throw new Error(); 5 }, 10); 6 close(); 7 var interval2 = setInterval(function() { 8 clearInterval(interval2); 9 postMessage(1); 10 throw new Error(); 11 }, 10);