Can not specify 'indentation' with tabs, why?

[serjyamp]

.pipe(sassLint({ rules:{ "class-name-format" : 0, "no-important" : 0, "property-sort-order" : 0, "indentation" : { "size" : "tab" } } }))

How to make linter require tabs? I'm still getting "Expected indentation of 2 space but found 4"

[hlohrenz]

I would like to know how to specify the size of tabs as well.. I use 4 spaces instead of 2.. I would like to tell the sass linter to expect 4, not 2 by default.

[dippas]

I also have tried all sort of combinations to check for indentation lint but it seems to me that is not checking at all for indention, either for spaces or tabs.