I guess you know where am going with this. This will help create powerful custom formulas for local consumption. and maybe in future become available in the market place (Formula Market Place) similar to the Flow Function and Component Market Place.
This isn’t currently available. If you have an idea for a formula function that would be useful to have for general use, please let us know on our tracker and we will see about implementing it. Perhaps in the future we would allow pull requests to our formula function repo, or some other form of contribution would be possible, but as of now it isn’t yet.