/** @class WearContext
 *  Encapsulates all state needed for API usage, including the credential-derived key used for encryption/decryption.
 *  Only keep this instance in memory. Or in other words, don't store it or data retrieved from the instance in any
 *  form of persistent storage, e.g. LocalStorage, SessionStorage, WebSQL, IndexedDb, querystring params (browser history).
 */
declare class WearContext {
    private _key;
    _preventSerialization: WearContext;
    constructor(key: CryptoKey);
    /** Method intended for internal usage only. If you retrieve the key for app usage, you should plan to think very
     *  carefully about what vulnerabilities you'll be introducing.
     *
     *  @return {CryptoKey} A CryptoKey usable for encryption/decryption or null if the context has been cleared.
     */
    dangerouslyGetKey(): CryptoKey | null;
    /** Has this context been cleared?
     *
     * @return {boolean} True, if it has. False, if not. */
    isClear(): boolean;
    /** Clear all data in the context, which disables the context for use in calling WEaR APIs and prevents the
     *  context data from being accessed by Javascript.
     */
    clear(): void;
}
export default WearContext;