import { Parser, ParserFunction, ParserFunctionMaybe, ParserObject } from "../types/parser-types";
export declare function chainParsers(a: ParserFunctionMaybe, b: ParserFunctionMaybe): ParserFunctionMaybe;
export declare function isParser(value: unknown): value is Parser<unknown, unknown>;
export declare function isParserObject(value: unknown): value is ParserObject<unknown, unknown>;
export declare function normalizeValidationFunction(parser: Parser | null | undefined): ParserFunction | null;