CodeMirror 6 set indentation unit

@larsp @marijn

You need to add indentUnit .of(" ") (four space, which the forum seems to collapse) from @codemirror/language to your configuration.

Does “add to my configuration” mean add another extension to my EditorStateConfig?

If so, where do I get indentUnit from? Do I import it from somewhere?

Some places I have tried to find it:

import {Indentation} from '@codemirror/language'
Indentation.indentUnit
import {LanguageDescription} from '@codemirror/language'
LanguageDescription.indentUnit