breaks with PropTypes

[ulisinn]

e.g.:

/process.env.NODE_ENV !== "production" ? MidiTrack.propTypes = {
notes: _react.PropTypes.arrayOf(_react.PropTypes.shape({
noteNumber: _react.PropTypes.number,
noteName: _react.PropTypes.string,
startTimeInMS: _react.PropTypes.number,
durationInMS: _react.PropTypes.number,
endTimeInMS: _react.PropTypes.number,
instrumentName: _react.PropTypes.string,
deltaTime: _react.PropTypes.number,
msPerTick: _react.PropTypes.number
}))
} : void 0;/