Function modFormatter

modFormatter(f: EndoOf<EndoOf<string>>): EndoOf<Draw.Theme>
Function
Modify the formatter function of a tree theme using the given function.
Parameters
- f: EndoOf<EndoOf<string>>
  Will be given the formatter function and expected to return an updated value.
Returns EndoOf<Draw.Theme>
- Defined in src/draw/tree/theme/data.ts:178