Javascript/Typescript sort decorator

sortDecorator.ts

/**
 * * Decorator for methods returning T[]; where T has property fieldName
 * @param fieldName: string, property name to sort by; reference _.orderBy documentation
 * @param direction: string; reference _.orderBy documentation
 */
export function Sort<T>(fieldName: keyof T, direction: SortDirection = 'asc'): any {
  return function(target: any, propertyKey: string, descriptor: PropertyDescriptor): PropertyDescriptor {
    const original = descriptor.value;
    descriptor.value = function(...args: any[]): any {
      const result = original.apply(this, args);

      return _.orderBy(result, [v => v[fieldName].toLowerCase()], direction);
    };

    return descriptor;
  };
}