/**
 * This type is a function which expects T as return value (original function return type).
 * In the function the this.-pointer can be used to access the class instance.
 * In addition, the first parameter is the error thrown and then all other passing parameters are passed to the method to which the decorator is applied
 * @example
 * ```typescript
 * @tryCatch()
 * public catchThisFunc(p1, p2, p3): number { .... }
 * @tryCatch({
 *    defaultValueOnError(err, p1, p2, p3): number {
      console.error(err, p1, p2, p3, this);
      return 0;
    }
  })
  public catchThisFunc(p1, p2, p3): number { .... }
 * ```
 */
export type DefaultValueOnErrorFunction<T> = (error: any, ...args: any[]) => T | null | undefined;
export interface ITryCatchDecoratorOptions<T> {
    /**
     * The default value that is returned when an error has occurred.
     * @default null
     */
    defaultValueOnError?: T | null | undefined | DefaultValueOnErrorFunction<T>;
}
/**
 * Decorator to wrap a class method with a try-catch block. Works also with Promise
 * @param {ITryCatchDecoratorOptions<T>} options custom options for the decorators
 * @returns {T|null|undefined} In case of success the expected result T, otherwise the specified default value or null or undefined.
 * @since 1.4.0
 * @since 1.5.0 defaultValueOnError can be a function
 */
export declare const tryCatch: <T>(options?: ITryCatchDecoratorOptions<T>) => any;
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