/**
 * Bidi reordering
 * Port of bidi-js reordering.js
 */
import type { EmbeddingLevelsResult } from "./embedding-levels.ts";
/**
 * Given a start and end denoting a single line within a string, and a set of precalculated
 * bidi embedding levels, produce a list of segments whose ordering should be flipped, in sequence.
 * @param string Text string to process
 * @param embeddingLevelsResult Result from getEmbeddingLevels
 * @param start Start index (defaults to 0)
 * @param end End index (defaults to string length - 1)
 * @returns Array of segment ranges [start, end] to be reversed
 */
export declare function getReorderSegments(string: string, embeddingLevelsResult: EmbeddingLevelsResult, start?: number, end?: number): Array<[number, number]>;
/**
 * Get the reordered string with bidi segments reversed
 * @param string Text string to reorder
 * @param embedLevelsResult Result from getEmbeddingLevels
 * @param start Start index (defaults to 0)
 * @param end End index (defaults to string length - 1)
 * @returns Reordered string with BiDi applied
 */
export declare function getReorderedString(string: string, embedLevelsResult: EmbeddingLevelsResult, start?: number, end?: number): string;
/**
 * Get an array with character indices in their new bidi order
 * @param string Text string to process
 * @param embedLevelsResult Result from getEmbeddingLevels
 * @param start Start index (defaults to 0)
 * @param end End index (defaults to string length - 1)
 * @returns Array mapping new positions to original character indices
 */
export declare function getReorderedIndices(string: string, embedLevelsResult: EmbeddingLevelsResult, start?: number, end?: number): number[];