import { Position } from '../source/Position';
import { Source } from '../source/Source';
export declare class Scanner {
    readonly source: Source;
    private readonly input;
    private offset;
    private line;
    private column;
    private cachedPosition;
    get position(): Position;
    constructor(source: Source);
    peek(offset?: number): string | undefined;
    sub(length: number, offset?: number): string;
    next(throwEof?: boolean): string;
    skip(count?: number): void;
    eof(): boolean;
    eol(): boolean;
}