1 | (function (global, factory) {
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2 | typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('twelvetet')) :
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3 | typeof define === 'function' && define.amd ? define(['twelvetet'], factory) :
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4 | (global.TwelveTetFretboard = factory(global.TwelveTet));
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5 | }(this, (function (TwelveTet) { 'use strict';
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6 |
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7 | TwelveTet = TwelveTet && TwelveTet.hasOwnProperty('default') ? TwelveTet['default'] : TwelveTet;
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8 |
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9 | var classCallCheck = function (instance, Constructor) {
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10 | if (!(instance instanceof Constructor)) {
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11 | throw new TypeError("Cannot call a class as a function");
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12 | }
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13 | };
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14 |
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15 | var createClass = function () {
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16 | function defineProperties(target, props) {
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17 | for (var i = 0; i < props.length; i++) {
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18 | var descriptor = props[i];
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19 | descriptor.enumerable = descriptor.enumerable || false;
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20 | descriptor.configurable = true;
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21 | if ("value" in descriptor) descriptor.writable = true;
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22 | Object.defineProperty(target, descriptor.key, descriptor);
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23 | }
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24 | }
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25 |
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26 | return function (Constructor, protoProps, staticProps) {
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27 | if (protoProps) defineProperties(Constructor.prototype, protoProps);
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28 | if (staticProps) defineProperties(Constructor, staticProps);
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29 | return Constructor;
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30 | };
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31 | }();
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32 |
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33 |
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34 |
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35 |
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36 |
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37 |
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38 |
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39 |
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40 |
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41 |
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42 |
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43 |
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44 |
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45 |
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46 |
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47 |
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48 | var TwelveTetFretboard = function () {
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49 | function TwelveTetFretboard(tuning, numFrets) {
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50 | var tuningFrequency = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 440;
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51 | classCallCheck(this, TwelveTetFretboard);
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52 |
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53 | if (!isNonEmptyArray(tuning)) {
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54 | throw new TypeError("Missing or invalid argument, 'tuning'. Non-empty array expected.");
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55 | }
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56 |
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57 | if (!isPositiveInteger(numFrets)) {
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58 | throw new TypeError("Missing or invalid argument, 'numFrets'. Positive integer expected.");
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59 | }
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60 |
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61 | if (!isFrequency(tuningFrequency)) {
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62 | throw new TypeError("Missing or invalid argument, 'tuningFrequency'. Positive number expected.");
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63 | }
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64 |
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65 | var twelvetet = new TwelveTet(tuningFrequency);
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66 | var positions = this._positions = [];
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67 | tuning.slice(0).reverse().forEach(function (value, stringIndex) {
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68 | for (var fretIndex = 0; fretIndex < numFrets; fretIndex++) {
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69 | positions.push({
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70 | pitch: twelvetet.pitch(value).next(fretIndex),
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71 | stringIndex: stringIndex,
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72 | fretIndex: fretIndex
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73 | });
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74 | }
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75 | });
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76 | }
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77 |
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78 | |
79 |
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80 |
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81 |
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82 |
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83 |
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84 |
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85 |
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86 |
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87 |
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88 |
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89 | TwelveTetFretboard.prototype.at = function at(aStringIndex, aFretIndex) {
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90 | if (!isNonNegativeInteger(aStringIndex)) {
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91 | throw new TypeError("Missing or invalid argument, 'aStringIndex'. Non-negative integer expected");
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92 | }
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93 |
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94 | if (!isNonNegativeInteger(aFretIndex)) {
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95 | throw new TypeError("Missing or invalid argument, 'aFretIndex'. Non-negative integer expected.");
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96 | }
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97 |
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98 | var position = this._positions.find(function (_ref) {
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99 | var stringIndex = _ref.stringIndex,
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100 | fretIndex = _ref.fretIndex;
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101 | return stringIndex === aStringIndex && fretIndex === aFretIndex;
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102 | });
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103 |
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104 | return position != null ? position.pitch : null;
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105 | };
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106 |
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107 | |
108 |
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109 |
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110 |
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111 |
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112 |
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113 |
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114 | createClass(TwelveTetFretboard, [{
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115 | key: "positions",
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116 | get: function get$$1() {
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117 | return this._positions.map(function (position) {
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118 | return Object.assign({}, position);
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119 | });
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120 | }
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121 | }]);
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122 | return TwelveTetFretboard;
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123 | }();
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124 |
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125 |
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126 | function isNonEmptyArray(value) {
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127 | return (/^\[object Array\]$/.test(Object.prototype.toString.call(value)) && value.length > 0
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128 | );
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129 | }
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130 |
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131 | function isInteger(value) {
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132 | return typeof value === 'number' && isFinite(value) && Math.floor(value) === value;
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133 | }
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134 |
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135 | function isNonNegativeInteger(value) {
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136 | return isInteger(value) && value >= 0;
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137 | }
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138 |
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139 | function isPositiveInteger(value) {
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140 | return isInteger(value) && value > 0;
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141 | }
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142 |
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143 | function isFrequency(value) {
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144 | return typeof value === 'number' && isFinite(value) && value > 0;
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145 | }
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146 |
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147 | return TwelveTetFretboard;
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148 |
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149 | })));
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