what is still left to do:
- pass all the identifiers through the g function or handle them specially
- when the input of a cell starts with "=" treat is as a formula
- allow functions / formulas that return strings (currently only "NUMBER"-cells are supported by the g function)
- compute/parse all formulas before rendering
- maybe refactor Spreadsheet.js a bit
- write standard library for the formulas
- add transpiling for range operator (maybe just use an array for this?)
- create basic file format
- better error handling
- blurry the lines between "STRING", "NUMBER", and "EMPTY" cells (maybe even completely remove them or just make it so that they can switch freely from one to the other)
- add more keyboard shortcuts (like backspace for a selection / single cell for example)
- manage cell focus better
- improve error reporting inside transpiled (formula) code
- add boolean value cell type and maybe date type (this could be a subtype of string to be honest. This means that instead of
number | stringbeing accepted everywhere it would need to benumber | string | boolean | Date) - add background and text colors (save via style object?)
- create a rightclick menu