constants.js

export const A4 = {
  FREQUENCY: 440.0,
  NOTE_NAME: 'A',
  OCTAVE: 4
}

export const tones = [
  'C',
  'C#',
  'D',
  'D#',
  'E',
  'F',
  'F#',
  'G',
  'G#',
  'A',
  'A#',
  'B'
]

const ionian = [2, 2, 1, 2, 2, 2, 1]
const dorian = [2, 1, 2, 2, 2, 1, 2]
const phrygian = [1, 2, 2, 2, 1, 2, 2]
const lydian = [2, 2, 2, 1, 2, 2, 1]
const mixolydian = [2, 2, 1, 2, 2, 1, 2]
const aeolian = [2, 1, 2, 2, 1, 2, 2]
const locrian = [1, 2, 2, 1, 2, 2, 2]

export const scales = {
  ionian,
  dorian,
  phrygian,
  lydian,
  mixolydian,
  aeolian,
  locrian
}

const major = [4, 3]
const major7 = [4, 3, 4]
const major9 = [4, 3, 4, 3]
const major11 = [4, 3, 4, 3, 3]
const dominant7 = [4, 3, 3]
const diminished = [3, 3, 3]
const halfDiminished = [3, 3, 4]
const minor = [3, 4]
const minor7 = [3, 4, 3]
const minor9 = [3, 4, 3, 4]
const minor11 = [3, 4, 3, 4, 3]

export const chords = {
  major,
  major7,
  major9,
  major11,
  dominant7,
  diminished,
  halfDiminished,
  minor,
  minor7,
  minor9,
  minor11
}

export const DISPLAY_MODES = {
  CHORD: 'CHORD',
  SCALE: 'SCALE'
}

export const FRET_COUNT = 13