export declare class CharacterStream {
    private _text;
    private _position;
    private _currentChar;
    private _isEndOfStream;
    constructor(text: string);
    get position(): number;
    set position(value: number);
    get currentChar(): number;
    get nextChar(): number;
    get prevChar(): number;
    get length(): number;
    getText(): string;
    getCurrentChar(): number;
    isEndOfStream(): boolean;
    lookAhead(offset: number): number;
    advance(offset: number): void;
    moveNext(): boolean;
    isAtWhiteSpace(): boolean;
    isAtLineBreak(): boolean;
    skipLineBreak(): void;
    skipWhitespace(): void;
    skipToEol(): void;
    skipToWhitespace(): void;
    charCodeAt(index: number): number;
    private _checkBounds;
}