Combobox.items must be mutable?

[jamesarosen]

I tried doing this:

const myOptions: readonly MyGroup[] = [...] as const;

<Combobox<MyOption, MyGroup>
  options={myOptions}
  ...
/>

but Combobox<Option, OptGroup> expects options: Array<Option | OptGroup>;.

So the question is: does <Combobox> actually need to mutate options?

The derived values like allOptions, filteredOptions and displayedOptions use non-destructive functions like flatMap and filter.

Would it be reasonable to relax the type to readonly Array<Option | OptGroup>?

(I can work around it for now by casting, but if Combobox really wants to mutate the array, that's risky.)