export class Utils{
    static decorate(decorators: any[], target: any, propertyKey: string, descriptor: PropertyDescriptor) {
        var c: number = arguments.length;
        var r = c < 3 ? target : descriptor === null ? descriptor = Object.getOwnPropertyDescriptor(target, propertyKey) : descriptor;
        if (typeof Reflect === 'object' && typeof Reflect['decorate'] === 'function') {
            r = Reflect['decorate'](decorators, target, propertyKey, descriptor);
        } else {
            for (var i: number = decorators.length - 1; i >= 0; i--){
                var d = decorators[i];
                if (d) {
                    r = (c < 3 ? d(r) : c > 3 ? d(target, propertyKey, r) : d(target, descriptor)) || r;
                }
            }
        }
        return c > 3 && r && Object.defineProperty(target, propertyKey, r), r;
    }
}