I have a project that uses Kendo UI for jQuery to work with spreadsheets. I want to recreate the project from scratch in Angular using the Spreadsheet component.
We have some custom functions to use in the spreadsheets. In jQuery, I am currently using `kendo.spreadsheet.defineFunction()` to define our custom functions and I would like to do the same in Angular. How can I do it? I tried to find some information in the documentation but I didn't succeed.