shaka-player/lib/util/map_utils.js

DASH/EME video player library

/**
 * @license
 * Copyright 2016 Google Inc.
 *
 * 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.
 */

goog.provide('shaka.util.MapUtils');


/**
 * @namespace shaka.util.MapUtils
 * @summary A set of map/object utility functions.
 */


/**
 * @param {!Object.<KEY, VALUE>} object
 * @return {!Map.<KEY, VALUE>}
 * @template KEY,VALUE
 */
shaka.util.MapUtils.asMap = function(object) {
  const map = new Map();
  Object.keys(object).forEach((key) => {
    map.set(key, object[key]);
  });

  return map;
};


/**
 * @param {!Map.<KEY, VALUE>} map
 * @return {!Object.<KEY, VALUE>}
 * @template KEY,VALUE
 */
shaka.util.MapUtils.asObject = function(map) {
  const obj = {};
  map.forEach((value, key) => {
    obj[key] = value;
  });

  return obj;
};