superset-frontend/spec/helpers/CacheStorage.ts

/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 */
import Cache, { caches } from './Cache';

export default class CacheStorage {
  open(key: string): Promise<Cache> {
    return new Promise(resolve => {
      resolve(new Cache(key));
    });
  }

  delete(key: string): Promise<boolean> {
    const wasPresent = key in caches;
    if (wasPresent) {
      delete caches[key];
    }
    return Promise.resolve(wasPresent);
  }
}