node_modules/jszip/node_modules/core-js/library/modules/web.timers.js

// ie9- setTimeout & setInterval additional parameters fix
var global     = require('./_global')
  , $export    = require('./_export')
  , invoke     = require('./_invoke')
  , partial    = require('./_partial')
  , navigator  = global.navigator
  , MSIE       = !!navigator && /MSIE .\./.test(navigator.userAgent); // <- dirty ie9- check
var wrap = function(set){
  return MSIE ? function(fn, time /*, ...args */){
    return set(invoke(
      partial,
      [].slice.call(arguments, 2),
      typeof fn == 'function' ? fn : Function(fn)
    ), time);
  } : set;
};
$export($export.G + $export.B + $export.F * MSIE, {
  setTimeout:  wrap(global.setTimeout),
  setInterval: wrap(global.setInterval)
});