This is a library to parse MIDI files. It is based on previous libraries, and has been modified to improve readability and to be used in a personal project that needed some changes.

Example:

Entry file: sample.mid Output file: sample.json

var
  fs = require('fs-extra'),
  GeneralMidi = require('./src/midi.js')
;

const
  MIDI_FILE = 'sample.mid',
  DIST_FILE = 'sample.json',
  FILE_TYPE = 'binary'
;

function readStream() {
  var midiSong = fs.readFileSync(MIDI_FILE, FILE_TYPE);
  var jsonSong = GeneralMidi.parseData(midiSong);
  fs.writeJsonSync(DIST_FILE, jsonSong);
}

readStream();

Example run:

$ node parse

• Emoji instruments -> src/constants.instruments-emoji
• MIDI note numbers-strings -> src/constants.notes-emoji
• Use ES6

• midi-converter
• midi-file-parser
• midi-player-js
• soundfont-player

Feedback is always very welcome :)