import { ValidationOptions } from 'class-validator';
/**
 * Checks if the value is a bigint or can be converted to a bigint.
 * @param value
 * @returns
 */
export declare function isBigInt(value: unknown): boolean;
/**
 * Checks if the value is a bigint or can be converted to a bigint.
 * @param options
 * @returns
 */
export declare function IsBigInt(options?: ValidationOptions): PropertyDecorator;