import opentype from 'opentype.js';
export type FontRef = opentype.Font;
export declare function encodeGlyph(font: FontRef, ch: string): {
    bytes: Uint8Array;
    advance: number;
};
export declare class GlyphCache {
    private font;
    private encodings;
    constructor(font: FontRef);
    get(ch: string): {
        bytes: Uint8Array;
        advance: number;
    };
}