Timeout on midi.header.ticksToSeconds, when using a midi made by MuseScore. midi.tracks[0].endOfTrackTicks undefined.

[Roy Wierer]

Timeout and browser hang when attempting to read the time of a track by midi.header.ticksToSeconds,
midi.tracks[0].endOfTrackTicks undefined.
Problem only occurs on midi made by MuseScore for some reason.
midi.zip

Script terminated by timeout at: r@file:///************************/libs/ToneJS-Midi/Midi.js:24:10417 535/t.prototype.ticksToSeconds@file:///************************/libs/ToneJS-Midi/Midi.js:24:16781

The midi object:
{ "header": { "tempos": [ { "bpm": 120, "ticks": 0, "time": 0 } ], "timeSignatures": [ { "ticks": 0, "timeSignature": [ 4, 4 ], "measures": 0 } ], "keySignatures": [ { "key": "C", "scale": "major", "ticks": 0 } ], "meta": [], "name": "5-str. Electric Bass, Electric Bass" }, "tracks": [ { "name": "", "notes": [ { "midi": 33, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 0, "durationTicks": 479 }, { "midi": 35, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 480, "durationTicks": 479 }, { "midi": 37, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 960, "durationTicks": 479 }, { "midi": 38, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 1440, "durationTicks": 479 }, { "midi": 40, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 1920, "durationTicks": 479 }, { "midi": 42, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 2400, "durationTicks": 479 }, { "midi": 44, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 2880, "durationTicks": 479 }, { "midi": 45, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 3360, "durationTicks": 479 }, { "midi": 47, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 3840, "durationTicks": 479 }, { "midi": 49, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 4320, "durationTicks": 479 }, { "midi": 50, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 4800, "durationTicks": 479 }, { "midi": 52, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 5280, "durationTicks": 479 }, { "midi": 54, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 5760, "durationTicks": 479 }, { "midi": 56, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 6240, "durationTicks": 479 }, { "midi": 57, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 6720, "durationTicks": 479 }, { "midi": 56, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 7200, "durationTicks": 479 }, { "midi": 54, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 7680, "durationTicks": 479 }, { "midi": 52, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 8160, "durationTicks": 479 }, { "midi": 50, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 8640, "durationTicks": 479 }, { "midi": 49, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 9120, "durationTicks": 479 }, { "midi": 47, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 9600, "durationTicks": 479 }, { "midi": 45, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 10080, "durationTicks": 479 }, { "midi": 44, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 10560, "durationTicks": 479 }, { "midi": 42, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 11040, "durationTicks": 479 }, { "midi": 40, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 11520, "durationTicks": 479 }, { "midi": 38, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 12000, "durationTicks": 479 }, { "midi": 37, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 12480, "durationTicks": 479 }, { "midi": 35, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 12960, "durationTicks": 479 }, { "midi": 33, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 13440, "durationTicks": 479 }, { "midi": 28, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 17280, "durationTicks": 1919 }, { "midi": 33, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 19200, "durationTicks": 1919 }, { "midi": 38, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 21120, "durationTicks": 1919 }, { "midi": 43, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 23040, "durationTicks": 1919 }, { "midi": 28, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 24960, "durationTicks": 479 }, { "midi": 33, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 25440, "durationTicks": 479 }, { "midi": 38, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 25920, "durationTicks": 479 }, { "midi": 43, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 26400, "durationTicks": 479 }, { "midi": 33, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 28800, "durationTicks": 479 }, { "midi": 28, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 29280, "durationTicks": 479 }, { "midi": 33, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 29760, "durationTicks": 479 }, { "midi": 28, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 30240, "durationTicks": 479 }, { "midi": 28, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 30720, "durationTicks": 479 }, { "midi": 40, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 31200, "durationTicks": 479 }, { "midi": 35, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 31680, "durationTicks": 479 }, { "midi": 40, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 32160, "durationTicks": 479 }, { "midi": 45, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 32640, "durationTicks": 479 }, { "midi": 40, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 33120, "durationTicks": 479 }, { "midi": 45, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 33600, "durationTicks": 479 }, { "midi": 40, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 34080, "durationTicks": 479 }, { "midi": 28, "velocity": 0.6299212598425197, "noteOffVelocity": 0, "ticks": 34560, "durationTicks": 479 } ], "pitchBends": [], "instrument": { "number": 33 }, "channel": 0 }, { "name": "", "notes": [], "pitchBends": [], "instrument": { "number": 0 }, "channel": 0 }, { "name": "", "notes": [], "pitchBends": [], "instrument": { "number": 36 }, "channel": 0 }, { "name": "", "notes": [], "pitchBends": [], "instrument": { "number": 0 }, "channel": 0 }, { "name": "", "notes": [], "pitchBends": [], "instrument": { "number": 37 }, "channel": 0 } ] }

[Roy Wierer]

Problem occurs on a variety on midi files including new ones exported by MuseScore, Audacity, Tuxguitar. I want to use this plugin for MeloNade. The ticksToSeconds method is used for the html visualizer.