Echo Show Support

Would be nice to add built-in function to check Echo Show Support.

Also example in Docs isn’t valid:

app.post(req, res, type, exception) {  
  // If the device does not support display directives then remove them from the response
  if (!system.supportsDisplay(req))) {
    res.response.response.directives = []
  }
}

The actual interface of app.post is app.post = function () {...}. And system is not defined 😉

[matt-kruse]

I already have helper functions like these and many more in my local version of this lib, I just find the structure and tests required in the release version to be a bit too much for me to contribute them back.

Since the functions require request data, putting them in response isn’t possible. But I’ve found this with other things, too. One fix is to actually put the request json into the response object when it’s created, so it can reference data like this.

[fremail]

I realized that those functions will use request.data, but keeping them in response sounds better for me.