import type { GlyphInfo } from "../../types.ts";
/**
 * Check if codepoint is a Hangul syllable
 */
export declare function isHangulSyllable(cp: number): boolean;
/**
 * Check if codepoint is a Hangul Jamo (conjoining)
 */
export declare function isHangulJamo(cp: number): boolean;
/**
 * Check if codepoint is a leading consonant (L)
 */
export declare function isJamoL(cp: number): boolean;
/**
 * Check if codepoint is a vowel (V)
 */
export declare function isJamoV(cp: number): boolean;
/**
 * Check if codepoint is a trailing consonant (T)
 */
export declare function isJamoT(cp: number): boolean;
/**
 * Decompose a precomposed Hangul syllable into Jamo
 */
export declare function decomposeHangul(cp: number): number[];
/**
 * Compose Jamo into a precomposed Hangul syllable
 */
export declare function composeHangul(l: number, v: number, t?: number): number | null;
/**
 * Hangul syllable types
 */
export declare enum HangulSyllableType {
    NotApplicable = 0,
    LeadingJamo = 1,// L
    VowelJamo = 2,// V
    TrailingJamo = 3,// T
    LVSyllable = 4,// LV (no trailing)
    LVTSyllable = 5
}
/**
 * Get the syllable type of a codepoint
 */
export declare function getHangulSyllableType(cp: number): HangulSyllableType;
/**
 * Feature masks for Hangul
 */
export declare const HangulFeatureMask: {
    readonly ljmo: 1;
    readonly vjmo: 2;
    readonly tjmo: 4;
};
/**
 * Setup Hangul masks for feature application
 */
export declare function setupHangulMasks(infos: GlyphInfo[]): void;
/**
 * Normalize Hangul - compose Jamo sequences into syllables where possible
 */
export declare function normalizeHangul(infos: GlyphInfo[]): GlyphInfo[];
/**
 * Check if codepoint is Korean (Hangul or Jamo)
 */
export declare function isKorean(cp: number): boolean;