import type { GlyphInfo } from "../../types.ts";
/**
 * Arabic joining types from Unicode
 */
export declare enum ArabicJoiningType {
    NonJoining = "U",// Non_Joining
    RightJoining = "R",// Right_Joining (joins on the right)
    DualJoining = "D",// Dual_Joining (joins on both sides)
    JoinCausing = "C",// Join_Causing (like TATWEEL)
    LeftJoining = "L",// Left_Joining (rare)
    Transparent = "T"
}
/**
 * Action to take for each glyph based on context
 */
export declare enum JoiningAction {
    None = 0,
    Isol = 1,// Isolated form
    Fina = 2,// Final form
    Medi = 3,// Medial form
    Init = 4
}
/**
 * Arabic joining group for specific shaping behavior
 */
export declare enum ArabicJoiningGroup {
    None = 0,
    Alaph = 1,
    DalathRish = 2
}
/**
 * Per-glyph info for Arabic shaping
 */
export interface ArabicGlyphData {
    joiningType: ArabicJoiningType;
    joiningGroup: ArabicJoiningGroup;
    action: JoiningAction;
}
/**
 * Check if a codepoint is in Arabic script range
 */
export declare function isArabic(cp: number): boolean;
/**
 * Get the joining type for a codepoint
 * Based on Unicode Arabic Shaping data
 */
export declare function getJoiningType(cp: number): ArabicJoiningType;
/**
 * Analyze joining for a sequence of glyphs.
 * Returns the action to take for each glyph.
 */
export declare function analyzeJoining(infos: GlyphInfo[]): JoiningAction[];
/**
 * Get the feature tag for a joining action
 */
export declare function getFeatureForAction(action: JoiningAction): string | null;
/**
 * Get default Arabic features in order
 */
export declare function getArabicFeatures(): string[];
/**
 * Set the feature mask for each glyph based on joining analysis
 * Inlined for performance - avoids intermediate array allocation
 */
export declare function setupArabicMasks(infos: GlyphInfo[]): void;