lib/Ext/core/class/Loader.js
function(excludes) {
            var me = this;

            return {
                require: function(expressions, fn, scope) {
                    return me.require(expressions, fn, scope, excludes);
                },

                syncRequire: function(expressions, fn, scope) {
                    return me.syncRequire(expressions, fn, scope, excludes);
                }
            };
        }
function(excludes) {
            var me = this;

            return {
                require: function(expressions, fn, scope) {
                    return me.require(expressions, fn, scope, excludes);
                },

                syncRequire: function(expressions, fn, scope) {
                    return me.syncRequire(expressions, fn, scope, excludes);
                }
            };
        }
Explicitly exclude files from being loaded. Useful when used in conjunction with a broad include expression.
Can be chained with more `require` and `exclude` methods, eg:

Ext.exclude('Ext.data.*').require('*');

Ext.exclude('widget.button*').require('widget.*');

@param {Array} excludes
@return {Object} object contains `require` method for chaining.