import { FieldError } from '../../../error';
import { RuleFn, RuleFnSync, ValidationContext } from '../../../types';
import { ProcessorInfo } from '../../../types/process/ProcessorInfo';
export declare const shouldValidate: (context: ValidationContext) => boolean;
export declare const validateRequired: RuleFn;
export declare const validateRequiredSync: RuleFnSync;
export declare const validateRequiredInfo: ProcessorInfo<ValidationContext, FieldError | null>;