/**
 * Take the application server's public key, which is Base64 URL-safe encoded,
 * and convert it to a UInt8Array, because this is the expected input of the subscribe()
 */
export declare const urlB64ToUint8Array: (base64String: any) => Uint8Array;
/**
 * Get browser version to track on backend
 * @return {{name: string, version: null}|{name: string, version: string}|{name: *, version: *}|{name: string, version}}
 */
export declare const loadVersionBrowser: () => {
    name: any;
    version: any;
};
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