import { PolyfillsLoaderConfig, GeneratedFile } from './types';
export interface InjectPolyfillsLoaderResult {
    htmlString: string;
    polyfillFiles: GeneratedFile[];
}
/**
 * Transforms an index.html file, injecting a polyfills loader for
 * compatibility with older browsers.
 */
export declare function injectPolyfillsLoader(htmlString: string, cfg: PolyfillsLoaderConfig): Promise<InjectPolyfillsLoaderResult>;
//# sourceMappingURL=injectPolyfillsLoader.d.ts.map