Function chordPitchClasses

chordPitchClasses(chord: ChordData, opts?: { includeBass?: boolean }): number[]
Get the sorted, deduplicated pitch classes of a chord.

A slash bass is one of them: F/G sounds a G, the voicers put it in the bass, and a set that omitted it would not re-detect as the chord it came from. Pass includeBass: false to enumerate the interval template alone.
Parameters
- chord: ChordData
  The chord to enumerate.
- opts: { includeBass?: boolean } = {}
  Set includeBass: false to omit a slash bass.
Returns number[]
The chord's pitch classes, sorted ascending in [0, 11].
Example
```
import { makeChord, chordPitchClasses } from '@libraz/libcantus';
chordPitchClasses(makeChord(0, 'maj7')); // [0, 4, 7, 11]
chordPitchClasses(makeChord(5, 'maj', 7)); // [0, 5, 7, 9] — F/G, G included
```
- Defined in src/theory/chord/index.ts:646