import type { GlyphInfo } from "../../types.ts";
/**
 * Thai/Lao character categories
 */
export declare enum ThaiLaoCategory {
    Other = 0,
    Consonant = 1,
    LeadingVowel = 2,// Vowels that appear before consonant
    AboveVowel = 3,// Vowels above consonant
    BelowVowel = 4,// Vowels below consonant
    FollowingVowel = 5,// Vowels after consonant
    Tone = 6,// Tone marks
    NikhahitMaiEk = 7,// Special combining marks
    SaraAm = 8,// Thai Sara Am (combines anusvara + aa)
    Symbol = 9
}
/**
 * Check if codepoint is Thai
 */
export declare function isThai(cp: number): boolean;
/**
 * Check if codepoint is Lao
 */
export declare function isLao(cp: number): boolean;
/**
 * Get Thai/Lao category for a codepoint
 */
export declare function getThaiLaoCategory(cp: number): ThaiLaoCategory;
/**
 * Set up masks for Thai/Lao shaping
 *
 * Thai/Lao require:
 * 1. Reordering of pre-base vowels (they appear before consonant visually but after in Unicode)
 * 2. Proper stacking of above/below vowels and tone marks
 */
export declare function setupThaiLaoMasks(infos: GlyphInfo[]): void;
/**
 * Reorder Thai/Lao clusters
 * Leading vowels (Sara E, Sara Ae, Sara O, Sara Ai Mai Muan, Sara Ai Mai Malai)
 * are stored after consonant in Unicode but displayed before
 */
export declare function reorderThaiLao(infos: GlyphInfo[]): void;