react-orchestra/native/src/InstrumentJS/lib/helpers/getNoteNamesFromIntervals.js

A toolbox to build interactive and smart instruments on the web and mobile.

'use strict';

exports.__esModule = true;

var _NOTES = require('../constants/NOTES');

var _NOTES2 = _interopRequireDefault(_NOTES);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

/**
 * Get unique note names from array of note objects or note names
 * @function
 * @name getNoteNamesFromIntervals
 * @param {string} noteNameWithOctave - note name with octave e.g. 'A3'
 * @example
 * getNoteNamesFromChordName('A3', [0, 2, 3]) // returns ['A3', 'B3', 'C3']
 * // Full list of supported chords in src/constants/CHORDS.js
 * @return {array} notenames
 */
var getNoteNamesFromIntervals = function getNoteNamesFromIntervals(firstNoteName, intervals) {
  var octave = firstNoteName.substring(firstNoteName.length - 1, firstNoteName.length);
  var firstNoteIndex = _NOTES2.default.indexOf(firstNoteName.substring(0, firstNoteName.length - 1));
  var notes = intervals.map(function (interval) {
    var noteIndex = (interval + firstNoteIndex) % 12;
    return '' + _NOTES2.default[noteIndex] + octave;
  });
  return notes;
}; /* mod */
exports.default = getNoteNamesFromIntervals;
module.exports = exports['default'];