is-web-worker
Determines if the code is running with a Web Worker.
    isWebWorker()
  
  var isWebWorker = require("can-util/js/is-web-worker/is-web-worker");
var GLOBAL = require("can-globals/global/global");
if(isWebWorker()) {
  console.log(GLOBAL() === self); // -> true
}
  
  
  Returns
 {Boolean}: 
True if running in a Web Worker.