/**
 * Licensed  under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
/**
 * Uses Browser local storage to save and retrieve the dictionary.
 */
export declare class Storage {
    private readonly KEY;
    /**
     * Saves the data to local storage
     * @param {!string} data -  Stringified data
     * @return {Boolean} True if the data was saved successfully
     */
    save(data: string): boolean;
    /**
     * Saves the data to local storage
     * @return {string} data -  Stringified data
     */
    read(): string | null;
}