That js file reads a `file.in` input file that contains prop types declarations and outputs an `file.out` file that will act as our shouldComponentUpdate react method. Run it by typing node shouldComponentUpdateCreator.js on your terminal.

file.in

screenHasLoaded: React.PropTypes.bool.isRequired,
isPartOfClass: React.PropTypes.bool.isRequired,
appointment: React.PropTypes.instanceOf(Map).isRequired,

// formErrors: React.PropTypes.instanceOf(Map).isRequired,
// timezoneZ: React.PropTypes.string.isRequired,
// isModal: React.PropTypes.bool.isRequired,
isClass: React.PropTypes.bool.isRequired,
classSize: React.PropTypes.number,
h: React.PropTypes.number.isRequired,
w: React.PropTypes.number.isRequired,
orientation: React.PropTypes.string.isRequired,
hasInternet: React.PropTypes.bool.isRequired,

// noOfRecurringApts: React.PropTypes.number,
currency: React.PropTypes.string.isRequired,
// appointmentTypeColor: React.PropTypes.string,
availableAddOns: React.PropTypes.instanceOf(Map),

availableCertificates: React.PropTypes.instanceOf(Map),

isPostingNewAppointment: React.PropTypes.bool.isRequired,
isReschedulingAppointment: React.PropTypes.bool.isRequired,
isCancelingAppointment: React.PropTypes.bool.isRequired,

timeFormatUsable: React.PropTypes.string,


// getBtnHeight: React.PropTypes.func.isRequired,
onRescheduleTap: React.PropTypes.func.isRequired,
onCancelAppointmentTap: React.PropTypes.func.isRequired,
onAppointmentCreateTap: React.PropTypes.func.isRequired,
onEditTap: React.PropTypes.func.isRequired,

isFetchingFuturePastAppts: React.PropTypes.bool.isRequired,
pastAppointment: React.PropTypes.instanceOf(Map),
futureAppointment: React.PropTypes.instanceOf(Map),

file.out

shouldComponentUpdate(nextProps) {
  return (
    nextProps.screenHasLoaded !== this.props.screenHasLoaded
    ||
    nextProps.isPartOfClass !== this.props.isPartOfClass
    ||
    nextProps.appointment !== this.props.appointment
    ||
    nextProps.isClass !== this.props.isClass
    ||
    nextProps.classSize !== this.props.classSize
    ||
    nextProps.h !== this.props.h
    ||
    nextProps.w !== this.props.w
    ||
    nextProps.orientation !== this.props.orientation
    ||
    nextProps.hasInternet !== this.props.hasInternet
    ||
    nextProps.currency !== this.props.currency
    ||
    nextProps.availableAddOns !== this.props.availableAddOns
    ||
    nextProps.availableCertificates !== this.props.availableCertificates
    ||
    nextProps.isPostingNewAppointment !== this.props.isPostingNewAppointment
    ||
    nextProps.isReschedulingAppointment !== this.props.isReschedulingAppointment
    ||
    nextProps.isCancelingAppointment !== this.props.isCancelingAppointment
    ||
    nextProps.timeFormatUsable !== this.props.timeFormatUsable
    ||
    nextProps.isFetchingFuturePastAppts !== this.props.isFetchingFuturePastAppts
    ||
    nextProps.pastAppointment !== this.props.pastAppointment
    ||
    nextProps.futureAppointment !== this.props.futureAppointment
  );
}

shouldComponentUpdateCreator.js

var fs = require('fs');
var lineReader = require('readline').createInterface({
	input: fs.createReadStream('file.in'),
	output: process.stdout,
	terminal: false
});

var fd = fs.openSync('file.out', 'w');
fs.write(fd, 'shouldComponentUpdate(nextProps) {\n  return (\n');
var lineIt = 0;
lineReader.on('line', function (line) {
	if (!line || /^\s*[\/][\/]/.test(line) || line.search(".func") !== -1) {
	    // ^    starting at the beginning of the line
	    // \s*  look for zero or more whitespace characters
	    // [\/]   and then a forward slash /
	    // [\/]   and then another forward slash /
	    // it's a comment so 
	    lineIt ++; // increase the line cnt
	    // and move on
	    if (!line) {
	    	console.log('Found blank row on line: '+lineIt);
	    } else if (line.search(".func") !== -1) {
			console.log('Found function proptype on line: '+lineIt);
	    } else {
	    	console.log('Found comment on line: '+lineIt);
	    }
	} else {
		var lineSplit = line.split(':');
		if (lineSplit) {
			var item = lineSplit[0];
			// console.log('Line from file:', line);
			var lineChangingStr = '';
			if (lineIt !== 0) {
				lineChangingStr = '    ||\n';
			}
			fs.write(fd, lineChangingStr+'    nextProps.'+item+' !== this.props.'+item+'\n');
			lineIt ++;
		}
	}
});
lineReader.on('close', function () {
	fs.write(fd, '  );\n}');
})