tonal-abc-notation

<!doctype html> <html lang="en"> <head> <title>Code coverage report for index.js</title> <meta charset="utf-8" /> <link rel="stylesheet" href="prettify.css" /> <link rel="stylesheet" href="base.css" /> <meta name="viewport" content="width=device-width, initial-scale=1"> <style type='text/css'> .coverage-summary .sorter { background-image: url(sort-arrow-sprite.png); } </style> </head> <body> <div class='wrapper'> <div class='pad1'> <h1> <a href="index.html">All files</a> index.js </h1> <div class='clearfix'> <div class='fl pad1y space-right2'> 95% Statements 19/20 </div> <div class='fl pad1y space-right2'> 95% Branches 19/20 </div> <div class='fl pad1y space-right2'> 100% Functions 4/4 </div> <div class='fl pad1y space-right2'> 100% Lines 16/16 </div> </div> </div> <div class='status-line high'></div> <pre><table class="coverage"> <tr><td class="line-count quiet">1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71</td><td class="line-coverage quiet">                                          1x 7x     13x 13x 10x                       8x 8x 8x 16x   8x         8x                           8x 8x 8x   8x 8x    </td><td class="text"><pre class="prettyprint lang-js">/** * [![npm version](https://img.shields.io/npm/v/tonal-abc-notation.svg?style=flat-square)](https://www.npmjs.com/package/tonal-abc-notation) * * Convert note strings between ABC and scientific notation * * This is part of [tonal](https://www.npmjs.com/package/tonal) music theory library. * * @example * const Abc = require("tonal-abc-notation") * Abc.toNote("c") // => "C5" * Abc.toAbc("Db2") // => "_D,," * * @example * import Tonal from "tonal" * import { toAbc } from "tonal-abc-notation" * Tonal.Scale.notes("C major").map(toAbc); * * @module Abc */ import { props } from "tonal-note";   const REGEX = /^(_{1,}|=|\^{1,}|)([abcdefgABCDEFG])([,']*)$/; const fillStr = (s, n) => Array(n + 1).join(s);   export function tokenize(str) { const m = REGEX.exec(str); if (!m) return ["", "", ""]; return [m[1], m[2], m[3]]; }   /** * Convert a (string) note in ABC notation into a (string) note in scientific notation * * @param {string} abcNote - the note in ABC notation * @return {string} the note in scientific notation of null if not valid * @example * Abc.toNote("c") // => "C5" */ export function toNote(str) { const [acc, letter, oct] = tokenize(str); Iif (letter === "") return null; let o = 4; for (let i = 0; i < oct.length; i++) o += oct[i] === "," ? -1 : 1; const a = acc[0] === "_" ? acc.replace(/_/g, "b") : acc[0] === "^" ? acc.replace(/\^/g, "#") : ""; return letter.charCodeAt(0) > 96 ? letter.toUpperCase() + a + (o + 1) : letter + a + o; }   /** * Convert a (string) note in scientific notation into a (string) note in ABC notation * * @param {string} note - a note in scientific notation * @return {string} the note in ABC notation or null if not valid note * @example * abc.toAbc("C#4") // => "^C" */ export function toAbc(str) { const { letter, acc, oct } = props(str); const a = acc[0] === "b" ? acc.replace(/b/g, "_") : acc.replace(/#/g, "^"); const l = oct > 4 ? letter.toLowerCase() : letter; const o = oct === 5 ? "" : oct > 4 ? fillStr("'", oct - 5) : fillStr(",", 4 - oct); return a + l + o; }  </pre></td></tr> </table></pre> <div class='push'></div> </div> <div class='footer quiet pad2 space-top1 center small'> Code coverage generated by <a href="https://istanbul.js.org/" target="_blank">istanbul</a> at Tue Feb 26 2019 22:00:54 GMT+0100 (CET) </div> </div> <script src="prettify.js"></script> <script> window.onload = function () { if (typeof prettyPrint === 'function') { prettyPrint(); } }; </script> <script src="sorter.js"></script> </body> </html>