/**
 * LineIndex - Fast row/col → offset conversion
 */
/**
 * LineIndex interface for fast row/col → offset conversion
 */
export interface LineIndex {
    offsetAt(row: number, col: number, exclusive?: boolean): number;
    lineEndOffset(row: number): number;
    hasNewline(row: number): boolean;
    getLine(row: number): string;
    getLines(): string[];
    lineCount(): number;
}
/**
 * LineIndex implementation - Fast row/col → offset conversion
 *
 * Build once per originalScript. Provides O(1) offset conversion
 * by pre-computing line-start offsets.
 */
export declare class LineIndexImpl implements LineIndex {
    private readonly lineStartOffsets;
    private readonly lines;
    private readonly originalScript;
    constructor(originalScript: string);
    /**
     * Convert row/column to character offset
     * @param row Zero-based row number
     * @param col Zero-based column number
     * @param exclusive If true, return offset one past the column (for end positions)
     * @returns Character offset in the script string
     */
    offsetAt(row: number, col: number, exclusive?: boolean): number;
    /**
     * Get the offset at the end of a line (after the newline)
     */
    lineEndOffset(row: number): number;
    /**
     * Check if a line has a newline character
     */
    hasNewline(row: number): boolean;
    /**
     * Get the text content of a specific line
     */
    getLine(row: number): string;
    /**
     * Get all lines as an array
     */
    getLines(): string[];
    /**
     * Get the total number of lines
     */
    lineCount(): number;
}