/**
 * A template loader defines how css and html are generated for a given component template.
 */
export interface TemplateLoader {
    loadHTML(tag: string): Promise<string | null>;
    loadCSS(tag: string): Promise<string | null>;
}
export type PathFn = (tag: string) => string;
export declare class FileSysTemplateLoader implements TemplateLoader {
    #private;
    constructor(html: PathFn, css: PathFn);
    loadHTML(tag: string): Promise<string | null>;
    loadCSS(tag: string): Promise<string | null>;
}
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