JavaScript What could stop Array.prototype.filter() from running in greasemonkey script that runs fine in console what could stop you from getting a passport,what could

Here is the code:

function fil(val) {
  console.log('fil'); // never written to console when run in greasemonkey
  return true;
}
var temp = unsafeWindow.someobject;
console.log(temp); // looks fine
temp.filter(fil); // never happens in greasemonkey

If I run the very same code (without unsafeWindow of course) on the same object in the firebug console it outputs just fine. What could be the reason?

Edit to clarify: when run in greasemonkey the string 'fil' never is written to the console which shows that fil() is never called. Also if I do something like console.log(temp.filter(fil)); I never get to see a result from that in the console when the code runs from greasemonkey. (although I know it should because the line above tells me temp exists and the code runs up to that point.

Answer:1

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