/**
 * Utilities for string operations during tokenization
 */
export declare class StringUtils {
    /**
     * Creates a visual representation of an error position in text
     * @param input The input text
     * @param errPosition The error position
     * @returns A string with a caret pointing to the error position
     */
    static getDebugPositionInfo(input: string, errPosition: number): string;
    /**
     * Skip white space characters.
     */
    private static skipWhiteSpace;
    /**
     * Skip line comment.
     */
    private static readLineComment;
    /**
     * Skip block comment.
     */
    private static readBlockComment;
    /**
     * Skip white space characters and SQL comments.
     * @returns Object containing the new position and an array of skipped comments
     */
    static readWhiteSpaceAndComment(input: string, position: number): {
        position: number;
        lines: string[];
    };
    /**
     * Read a regular identifier.
     */
    static readRegularIdentifier(input: string, position: number): {
        identifier: string;
        newPosition: number;
    };
    static tryReadRegularIdentifier(input: string, position: number): {
        identifier: string;
        newPosition: number;
    } | null;
}