'catch' is a reserved word in IE 8 / 9

[jblashill]

And thus, you cannot use promise.catch() if you plan on supporting IE 8 or 9.

I realize that this isn't a bug that can be fixed, but it is perhaps worth mentioning it as a limitation of this polyfill so developers aren't caught off guard when their app breaks on IE 8/9.

[stefanpenner]

+1 mentioning

[jblashill]

I should have included the work-around if you need to support IE 8 or 9:

promise["catch"](function(err) {
  // do something smart
});

[stefanpenner]

adding a es3 safe transpile step is also a great solution, for those that have a build pipeline.

[jakearchibald]

Agreed, thanks for pointing this out

[torarnek]

This one did the trick for me:
https://github.com/teppeis/gulp-dereserve