initial file upload - guitar data files/index/package

chords/Chord-finder.mjs

@@ -0,0 +1,107 @@
+const guitar = [
+  [4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11],
+  [9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4],
+  [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9],
+  [7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2],
+  [11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6],
+  [4, 5, 6, 7, 8, 9, 10, 11, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11],
+];
+
+const chordTypes = [
+  [0, 4, 7],
+  [0, 3, 7],
+  [0, 7],
+  [0, 4, 7, 10],
+  [0, 4, 7, 11],
+  [0, 3, 7, 10],
+  [0, 3, 7, 11],
+  [0, 5, 7],
+  [0, 2, 7],
+  [0, 4, 7, 9],
+  [0, 3, 7, 9],
+  [0, 2, 4, 7, 10],
+  [0, 2, 3, 7, 10],
+  [0, 2, 3, 7, 11],
+  [0, 2, 4, 5, 7, 10],
+  [0, 2, 3, 5, 7, 10],
+  [0, 2, 4, 5, 7, 11],
+  [0, 2, 3, 5, 7, 11],
+  [0, 2, 4, 7],
+  [0, 2, 3, 7],
+  [0, 2, 4, 7, 9],
+  [0, 2, 3, 7, 9],
+  [0, 4, 5, 7, 10],
+  [0, 4, 5, 7, 11],
+  [0, 3, 5, 7, 10],
+  [0, 3, 5, 7, 11],
+  [0, 4, 7, 9, 10],
+  [0, 4, 7, 9, 11],
+  [0, 3, 7, 9, 10],
+  [0, 3, 7, 9, 11],
+  [0, 4, 6, 10],
+  [0, 4, 8],
+  [0, 4, 8, 10],
+  [0, 1, 4, 7, 10],
+  [0, 3, 4, 7, 10],
+  [0, 1, 4, 8, 10],
+  [0, 3, 6, 10],
+  [0, 3, 8, 10],
+  [0, 1, 3, 7, 10],
+  [0, 5, 7, 9],
+  [0, 2, 7, 9],
+  [0, 5, 7, 10],
+  [0, 2, 7, 10],
+  [0, 5, 7, 11],
+  [0, 2, 7, 11],
+  [0, 3, 6],
+  [0, 3, 6, 9],
+];
+
+function generateNonCChords(input) {
+  const output = [];
+  const len = input.length;
+
+  for (let i = 0; i < 12; i++) {
+    const sequence = [];
+    for (let j = 0; j < len; j++) {
+      sequence.push((input[j] + i) % 12);
+    }
+    output.push(sequence);
+  }
+
+  return output;
+}
+
+function printAllGuitarChords(chord, chords = [], startFret = 0, endFret = 3) {
+  if (endFret > 20) return chords;
+  let currentChord = [];
+  for (let i = 0; i < guitar.length; i++) {
+    for (let j = startFret; j <= endFret; j++) {
+      if (chord.includes(guitar[i][j])) {
+        currentChord.push(j);
+        j = endFret + 1;
+      } else if (!chord.includes(guitar[i][j]) && j === endFret) {
+        currentChord.push('X');
+      }
+    }
+  }
+  chords.push(currentChord);
+  return printAllGuitarChords(chord, chords, startFret + 1, endFret + 1);
+}
+
+const everyChord = chordTypes.map((chord) => generateNonCChords(chord));
+console.log(everyChord);
+for (let i = 0; i < everyChord.length; i++) {
+  for (let j = 0; j < everyChord[i].length; j++)
+    console.log(printAllGuitarChords(everyChord[i][j]));
+}
+
+class ChordSet {
+  constructor() {
+    this.chords = [];
+    this.Cchords = [];
+    /// other metadata
+  }
+  addChord() {}
+  findChord() {}
+}