Hi @curlydoggi
I have asked our CTO for installation tips, and he said that you should always additionally install HyperFormula as the package management tool optimizes the installation himself. So yes, please do install Hyperformula and Handsontable.
However, I would also want to remind you that the use of the HyperFormula outside the implementation of Handsontable requires an additional license so your custom function can be used only within the Handsontable.
If you have any additional questions, please feel free to ask.