import { Fetcher } from "./types";
export declare let cachedKeys: {
    [key: string]: string;
};
export declare function getPubKey(keyID: string, fetcher?: Fetcher): Promise<string>;
export declare function validateIAPToken(iapToken: string, expectedAudiences: string | string[], fetcher?: Fetcher): Promise<string | {
    [key: string]: any;
}>;