Rewrite .catch as ['catch']
...and so on. Only necessary for IE8 but it would be a shame if code had to undergo a second pass just to fix that, and a minifier will revert if if IE8 support is not necessary
...and so on. Only necessary for IE8 but it would be a shame if code had to undergo a second pass just to fix that, and a minifier will revert if if IE8 support is not necessary