import * as hl from "highland";
export declare class NodeTextSizer {
    fontFamiliesToLoad: string[];
    layoutOpentypeMap: Record<string, Promise<any>>;
    fontPathMap: Record<string, Promise<string>>;
    fontPathSource: Record<string, hl.Stream<any>>;
    constructor(fontFamiliesToLoad?: string[]);
    getFontPathByFontFamily: (fontFamily: any) => any;
    loadOpentypeLayoutMap: (fontFamilies: any) => any;
    loadOpentypeLayout: (fontFamily: any) => any;
}