import type { TextOptions, TextHandle, FontMetrics, LoadedFont, HarfBuzzInstance } from './types';
import type { HyphenationTrieNode } from '../hyphenation';
declare global {
    interface Window {
        hbjs?: any;
        createHarfBuzz?: () => Promise<any>;
    }
}
export declare class Text {
    private static patternCache;
    private static hbInitPromise;
    private static fontCache;
    private static fontCacheMemoryBytes;
    private static maxFontCacheMemoryBytes;
    private static fontIdCounter;
    static enableWoff2(decoder: (data: ArrayBuffer | Uint8Array) => Uint8Array | Promise<Uint8Array>): void;
    private static stableStringify;
    private fontLoader;
    private loadedFont?;
    private currentFontId;
    private geometryBuilder?;
    private textShaper?;
    private textLayout?;
    private constructor();
    static setHarfBuzzPath(path: string): void;
    static setHarfBuzzBuffer(wasmBuffer: ArrayBuffer): void;
    static init(): Promise<HarfBuzzInstance>;
    static create(options: TextOptions): Promise<TextHandle>;
    private static resolveFont;
    private static loadAndCacheFont;
    private static trackFontCacheAdd;
    private static trackFontCacheRemove;
    private static enforceFontCacheMemoryLimit;
    private static generateFontContentHash;
    private setLoadedFont;
    private loadFont;
    private createGeometry;
    private prepareHyphenation;
    private validateOptions;
    private updateFontVariations;
    private prepareLayout;
    private applyColorSystem;
    private calculateGlyphBounds;
    private finalizeGeometry;
    getFontMetrics(): FontMetrics;
    static preloadPatterns(languages: string[], patternsPath?: string): Promise<void>;
    static registerPattern(language: string, pattern: HyphenationTrieNode): void;
    static setMaxFontCacheMemoryMB(limitMB: number): void;
    getLoadedFont(): LoadedFont | undefined;
    measureTextWidth(text: string, letterSpacing?: number): number;
    getCacheSize(): number;
    clearCache(): void;
    private createGlyphAttributes;
    private resetHelpers;
    destroy(): void;
}