export type NewlineOption = ' ' | '\n' | '\r\n';
export type IndentCharOption = '' | ' ' | '\t';
/**
 * SqlPrintHelper provides utility methods for SQL pretty printing.
 */
export declare class LinePrinter {
    indentChar: IndentCharOption;
    indentSize: number;
    newline: NewlineOption;
    lines: PrintLine[];
    /**
     * @param indentChar Character used for indentation (default: ' ') // Updated comment to reflect options
     * @param indentSize Number of indentChar per level (default: 0)
     * @param newline Newline string (default: '\r\n') // Changed type and default value
     */
    constructor(indentChar?: IndentCharOption, indentSize?: number, newline?: NewlineOption);
    print(): string;
    /**
     * Returns the indent string for a given level.
     * @param level Indentation level
     */
    private indent;
    /**
     * Appends a newline token to the given tokens array if newline is set, or adds an empty line if tokens is empty.
     * @param tokens Array of token objects with 'level' and 'text' property
     * @param level Indentation level
     */
    appendNewline(level: number): void;
    /**
     * Appends text to the last element of tokens array.
     * @param tokens Array of token objects with 'text' property
     * @param text Text to append
     */
    appendText(text: string): void;
    getCurrentLine(): PrintLine;
}
export declare class PrintLine {
    level: number;
    text: string;
    constructor(level: number, text: string);
}