Chord Parsing CLI example

chord-parser.js

#!/usr/bin/env node

const yargs = require("yargs");
const chordSymbolLib = require("chord-symbol");

const parseChord = chordSymbolLib.chordParserFactory();
const renderChord = chordSymbolLib.chordRendererFactory({ useShortNamings: true });

const options = yargs
 .usage("Usage: -c <inputChord>")
 .option("c", { alias: "inputChord", describe: "Chord symbol as a string", type: "string", demandOption: true })
 .argv;

const chord = parseChord(options.inputChord);

console.log(chord);

Example output.txt

$ ./chord-parser -c Cmaj7
{
  input: {
    symbol: 'Cmaj7',
    rootNote: 'C',
    descriptor: 'maj7',
    parsableDescriptor: 'maj7',
    modifiers: [ 'add7' ],
    notationSystem: 'english'
  },
  normalized: {
    intervals: [ '1', '3', '5', '7' ],
    semitones: [ 0, 4, 7, 11 ],
    intents: { major: true, eleventh: false, alt: false },
    rootNote: 'C',
    quality: 'major7',
    isSuspended: false,
    extensions: [],
    alterations: [],
    adds: [],
    omits: [],
    notes: [ 'C', 'E', 'G', 'B' ]
  },
  formatted: {
    rootNote: 'C',
    bassNote: undefined,
    descriptor: 'ma7',
    chordChanges: [],
    symbol: 'Cma7'
  },
  parserConfiguration: {}
}

instructions to make the CLI binaries.txt

```
$ npm install -g pkg # https://github.com/vercel/pkg
$ npm install -g chord-symbol # https://github.com/no-chris/chord-symbol
$ pkg chord-parser.js
```