declare namespace Ext {
    export interface FactoryConfig {
        aliasPrefix?: string;
        defaultProperty?: string;
        defaultType?: string;
        instanceProp?: string;
        xclass?: string;
    }

    export class Factory   {
        public create(config?: object | string, defaultType?: string | object): object;
        public dataIdentifier(config?: string | object): object;
        public static define(type?: string, config?: object | string): CallableFunction;
    }
}