import type Font from './Font.js';
import type { ModulePublicRuntimeConfig } from '../../module.js';
export default class FontCollection {
    list: Font[];
    constructor();
    getKey(): string;
    add(fonts: Font[]): {
        name: string;
        value: string;
    };
    getPreloadDescriptions(critical: boolean, crossorigin?: string): any[];
    getStyleDescriptions(options: ModulePublicRuntimeConfig): Partial<{
        key: string;
    }>[];
    getNoScriptStyleDescriptions(): Partial<{
        key: string;
    }>[];
    get size(): number;
    toJSON(): {
        list: {
            family: string;
            style: string;
            weight: string | number;
            src: string;
            type: string;
            fallbackFamily: string[];
            rootSelector: string;
            selector: string;
            media: string | undefined;
        }[];
    };
}