import type { ExWrappedData } from '../dataWrapper';
import type { IPointer } from '../getPointer';
export declare const FAILED: unique symbol;
export interface IParser<T = unknown, F = typeof FAILED> {
    (pointer: IPointer): F | T;
    isRule?: boolean;
}
export type RuleReturn<T, N extends string | undefined = string | undefined> = typeof FAILED | ExWrappedData<T, N>;
export type RuleReturnType<T extends IParser> = Exclude<ReturnType<T>, typeof FAILED>;
export declare const rule: <P extends IParser<unknown, typeof FAILED>>(parser: P) => P;
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