Function analyzeChord

analyzeChord(chord: ChordData, key: KeyScale): ChordAnalysis
Analyze a chord in a key: harmonic function, borrowing, and Roman numeral.

The function is quality-aware (see the predicates behind it), the source follows borrowedSource, and the numeral comes from chordToRoman. borrowed is true whenever a source is identified — including the Neapolitan, which the stricter parallel-mode predicate isBorrowedChord does not count.
Parameters
- chord: ChordData
  The chord to analyze.
- key: KeyScale
  The prevailing key.
Returns ChordAnalysis
The chord analysis.
Example
```
import { analyzeChord, makeChord, majorKey } from '@libraz/libcantus';
analyzeChord(makeChord(7, 'dom7'), majorKey(0));
// { function: 'dominant', borrowed: false, source: null, roman: 'V7' }
```
- Defined in analyze/functional/function.ts:163