Chord to leadsheet notation

[rayrutjes]

Hi there,

I'm trying to get leadsheet notation out of a Chord.

I saw that the library is somehow aware of leadsheet notation, given it's returned here: https://github.com/tonaljs/tonal/blob/main/packages/progression/index.ts#L12

I also digged all issues and this one seems to mention the tonal-key package, but I don't find the functions in the current version of the library: #48 (comment)

Taking a step back, in case my approach is wrong.
I'm willing to list all chords grouped by quality and number of notes and then display them as leadsheet symbols.

I also saw that the a Chord is listing "" as an alias in the Major chords for examples, but not sure how to efficiently use that value. Maybe there is a logic to the ordering of aliases that I could leverage, but somehow I feel like I'm missing a better way in the current API.

Thanks a lot for your help!