alustau/app.html

## app.html
<!DOCTYPE html>
<html>
    <head>
        <title>
            Jquery
        </title>
        <script data-main="js/app" src="js/libs/require.js"></script>
    </head>
    <body>
        <form id="formulario">
            <input type="text" value="2" data-form-validate="required">
            <input type="submit" value="Enviar">
        </form>
    </body>
</html>

## app.js
requirejs.config({
    baseUrl: "js",
    app: 'app',
    paths: {
      jquery: 'libs/jquery',
      form: 'app/form/form',
      validate: 'app/form/validator/validate',
      required: 'app/form/validator/required',
//      validate: 'app/form/validates/',
//      appDir: 'app'
    }
});

requirejs(["app/main"]);

## form.js
define(function(require) {
    var $form,
        $ = require('jquery');

    function Form(selector) {
        $form = $(selector);
    }

    Form.prototype.getElements = function() {
        var $elements = $form.find('select, input[type="text"], textarea, hidden');
        return $elements;
    };

    Form.prototype.isValid = function() {
        var valid = true;
        this.getElements().each(function() {
            var validate = $(this).getValidate();

            if (null !== validate && !validate.isValid($(this).val())) {
                valid = false;
            }
        });
        return false;
        return valid;
    };

    $.fn.getValidate = function() {
        var name = this.data('form-validate');

        if (typeof name !== 'undefined') {
            //o erro ta aqui
            var validate =  require(name);
            console.log(validate);return false;

            var validate =  eval('new '+ name);

            if (!validate instanceof Validate) {
                throw "Este objeto tem que ser parente de Validate";
            }

            return validate;
        }

        return null;

    };

//    function getValidate($this) {
//    }


    return (Form);
});

## required.js
define(['validate', 'require'], function(Validate) {
    Required.prototype = new Validate();

    function Required() {}

    Required.prototype.isValid = function(value) {
        if (typeof value === 'undefined' || !value) {
            return false;
        }

        return true;
    }

    return Required;
});
	<!DOCTYPE html>
	<html>
	<head>
	<title>
	Jquery
	</title>
	<script data-main="js/app" src="js/libs/require.js"></script>
	</head>
	<body>
	<form id="formulario">
	<input type="text" value="2" data-form-validate="required">
	<input type="submit" value="Enviar">
	</form>
	</body>
	</html>
	requirejs.config({
	baseUrl: "js",
	app: 'app',
	paths: {
	jquery: 'libs/jquery',
	form: 'app/form/form',
	validate: 'app/form/validator/validate',
	required: 'app/form/validator/required',
	// validate: 'app/form/validates/',
	// appDir: 'app'
	}
	});

	requirejs(["app/main"]);
	define(function(require) {
	var $form,
	$ = require('jquery');

	function Form(selector) {
	$form = $(selector);
	}

	Form.prototype.getElements = function() {
	var $elements = $form.find('select, input[type="text"], textarea, hidden');
	return $elements;
	};

	Form.prototype.isValid = function() {
	var valid = true;
	this.getElements().each(function() {
	var validate = $(this).getValidate();

	if (null !== validate && !validate.isValid($(this).val())) {
	valid = false;
	}
	});
	return false;
	return valid;
	};

	$.fn.getValidate = function() {
	var name = this.data('form-validate');

	if (typeof name !== 'undefined') {
	//o erro ta aqui
	var validate = require(name);
	console.log(validate);return false;

	var validate = eval('new '+ name);

	if (!validate instanceof Validate) {
	throw "Este objeto tem que ser parente de Validate";
	}

	return validate;
	}

	return null;

	};

	// function getValidate($this) {
	// }


	return (Form);
	});
	define(['validate', 'require'], function(Validate) {
	Required.prototype = new Validate();

	function Required() {}

	Required.prototype.isValid = function(value) {
	if (typeof value === 'undefined' \|\| !value) {
	return false;
	}

	return true;
	}

	return Required;
	});