Error in parsing when using arrow functions

[drdpedroso]

I'm getting queh trying to es.merge my javascript files.

  stream.js:75
     throw er; // Unhandled stream error in pipe.

The error message:
Error: Error in parsing: "modules/example/controllers/example-controller.js", Line 8: Unexpected token )

My Controller file:

        self.toggleSidenav = () => {
            return $mdSidenav('left').toggle();
        };

Is there some solution for it?

[dominictarr]

I think you want https://www.npmjs.com/package/stream-concat instead.
merge doesn't join the input end to end, but just mixes it into one stream.

[drdpedroso]

Thanks! That what i'm looking for :)