import { Cache } from '../../utils/Cache';
import type { GlyphData, GlyphContours } from '../types';
export declare function getGlyphCacheKey(fontId: string, glyphId: number, depth: number, removeOverlaps: boolean): string;
export declare const globalGlyphCache: Cache<string, GlyphData>;
export declare function createGlyphCache(): Cache<string, GlyphData>;
export declare const globalContourCache: Cache<string, GlyphContours>;
export declare const globalWordCache: Cache<string, GlyphData>;
export declare const globalClusteringCache: Cache<string, {
    glyphIds: number[];
    positions: {
        x: number;
        y: number;
    }[];
    groups: number[][];
}>;