How to use the music-gamut.reduce function in music-gamut
To help you get started, we’ve selected a few music-gamut examples, based on popular ways it is used in public projects.
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tonaljs / tonal / packages / note-filter / index.js View on Github 
filter.midi = function (fn, midi) {
if (arguments.length === 1) return function (m) { return filter.midi(fn, m) }
fn = filterFn(fn)
var midiNotes = gamut.split(midi).map(note)
return gamut.reduce(function (notes, n) {
if (fn(n)) notes.push(n)
else if (fn(prevEnh(n))) notes.push(prevEnh(n))
else if (fn(nextEnh(n))) notes.push(nextEnh(n))
return notes
}, [], midiNotes)
}
