import type { ParjsCombinator, Parjser } from "./parjser";
import type { ParjsResult } from "./result";
import type { ParsingState, UserState } from "./state";
/** A marker class used for storing the parser's user state. */
export declare class ParserUserState implements UserState {
    [key: string]: unknown;
}
export type ParjserDebugFunction = <T>(ps: ParsingState, current: Parjser<T>, startingPosition: number) => void;
export declare const defaultDebugFunction: ParjserDebugFunction;
/**
 * Returns a parser that will parse the string `str` and yield the text that was parsed. If it
 * can't, it will fail softly without consuming input.
 *
 * @param str The string to parse.
 */
export declare function string<T extends string>(str: T): Parjser<T>;
/**
 * The internal base Parjs parser class, which supports only basic parsing operations. Should not be
 * used in user code.
 */
export declare abstract class ParjserBase<TValue> implements Parjser<TValue> {
    abstract type: string;
    abstract expecting: string;
    private debugFunction?;
    expects(expecting: string): Parjser<TValue>;
    debug(fn?: ParjserDebugFunction): Parjser<TValue>;
    /**
     * Apply the parser to the given state.
     *
     * @param ps The parsing state.
     */
    apply(ps: ParsingState): void;
    /**
     * The internal operation performed by the PARSER. This will be overriden by derived classes.
     *
     * @param ps
     */
    protected abstract _apply(ps: ParsingState): void;
    parse(input: string, initialState?: UserState): ParjsResult<TValue>;
    pipe<T, T1, T2 = T1, T3 = T2, T4 = T3, T5 = T4, T6 = T5>(cmb1?: ParjsCombinator<T, T1>, cmb2?: ParjsCombinator<T1, T2>, cmb3?: ParjsCombinator<T2, T3>, cmb4?: ParjsCombinator<T3, T4>, cmb5?: ParjsCombinator<T4, T5>, cmb6?: ParjsCombinator<T5, T6>): Parjser<T6>;
}
/**
 * Returns a parser that will try to match the regular expression at the current position and yield
 * the result set. If it can't, the parser will fail softly. The match must start at the current
 * position. It can't skip any part of the input.
 *
 * @param origRegexp
 */
export declare function regexp(origRegexp: RegExp): Parjser<string[]>;
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