/**
 * Bidirectional text processing (UAX #9)
 */
import type { GlyphInfo } from "../types.ts";
import { Direction } from "../types.ts";
/**
 * Result of BiDi processing
 */
export interface BidiResult {
    /** Embedding levels per character */
    levels: Uint8Array;
    /** Paragraph information */
    paragraphs: BidiParagraph[];
}
/**
 * Paragraph info from BiDi algorithm
 */
export interface BidiParagraph {
    start: number;
    end: number;
    level: number;
}
/**
 * Get embedding levels for a string
 */
export declare function getEmbeddings(text: string, baseDirection?: Direction): BidiResult;
/**
 * Get reordered indices for visual display
 */
export declare function getVisualOrder(text: string, result: BidiResult, start?: number, end?: number): number[];
/**
 * Apply BiDi reordering to glyph infos
 */
export declare function reorderGlyphs(infos: GlyphInfo[], result: BidiResult): GlyphInfo[];
/**
 * Get mirrored character for RTL contexts
 */
export declare function getMirror(codepoint: number): number;
/**
 * Apply character mirroring for RTL runs
 */
export declare function applyMirroring(infos: GlyphInfo[], levels: Uint8Array): void;
/**
 * BiDi character type constants
 */
export declare const BidiType: {
    readonly L: 1;
    readonly R: 2;
    readonly EN: 4;
    readonly ES: 8;
    readonly ET: 16;
    readonly AN: 32;
    readonly CS: 64;
    readonly B: 128;
    readonly S: 256;
    readonly WS: 512;
    readonly ON: 1024;
    readonly BN: 2048;
    readonly NSM: 4096;
    readonly AL: 8192;
    readonly LRO: 16384;
    readonly RLO: 32768;
    readonly LRE: 65536;
    readonly RLE: 131072;
    readonly PDF: 262144;
    readonly LRI: 524288;
    readonly RLI: 1048576;
    readonly FSI: 2097152;
    readonly PDI: 4194304;
};
/**
 * Get BiDi character type for a character
 */
export declare function getCharType(char: string): number;
/**
 * Check if a character is strongly RTL
 */
export declare function isRTL(codepoint: number): boolean;
/**
 * Check if a character is strongly LTR
 */
export declare function isLTR(codepoint: number): boolean;
/**
 * Detect base direction from text content
 */
export declare function detectDirection(text: string): Direction;
/**
 * Full BiDi processing for shaping
 */
export declare function processBidi(infos: GlyphInfo[], baseDirection?: Direction): {
    infos: GlyphInfo[];
    levels: Uint8Array;
};