import { RequestHandler } from 'express';
export declare type PolyfillFeatureList = {
    [featureName: string]: {
        flags?: string[];
    };
};
export declare type PolyfillOptions = {
    minify: boolean;
    unknown: 'polyfill' | 'ignore';
    features: PolyfillFeatureList;
    excludes: string[];
    uaString: string;
    rum: boolean;
};
declare function getRouter(opts?: Partial<PolyfillOptions>): RequestHandler;
export declare const Polyfill: {
    getRouter: typeof getRouter;
};
export {};