🐞 - FilterByInputPipe doesn`t allow to pass nullable values

[mkozakevich]

Reproduction url

https://stackblitz.com/edit/angular-xc4hv7nk-1grcs782?file=src%2Fapp%2Fapp.template.html

Description

FilterByInputPipe source code contains null handler. But transform method signature allows readonly T[] only for items parameter

Source code

    public transform<T>(items: readonly T[], matcher?: TuiStringMatcher<T>): readonly T[]; // signature
    public transform<T>(
        items: ReadonlyArray<readonly T[]> | readonly T[] | null, // definition

It breaks DataListWrapper logic: you need to pass null to DataListWrapper items input to show the loader. So it becomes impossible to use FilterByInputPipe correctly with async values (see reproduction)

Taiga UI version

4.25.0

Browser Used

Chrome

OS Used

macOS