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/*
 * ============LICENSE_START===================================================
 * SPARKY (AAI UI service)
 * ============================================================================
 * Copyright © 2017 AT&T Intellectual Property.
 * Copyright © 2017 Amdocs
 * All rights reserved.
 * ============================================================================
 * 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.
 * ============LICENSE_END=====================================================
 *
 * ECOMP and OpenECOMP are trademarks
 * and service marks of AT&T Intellectual Property.
 */

var keyMirror = function (obj) {
  var ret = {};
  var key;
  var val;
  if (!(obj instanceof Object && !Array.isArray(obj))) {
    throw new Error('keyMirror(...): Argument must be an object.');
  }
  for (key in obj) {
    if (obj.hasOwnProperty(key)) {
      val = obj[key];
      if (val instanceof Object) {
        ret[key] = keyMirror(obj[key]);
      } else if (val !== null && val !== undefined) {
        ret[key] = val;
      }
      else {
        ret[key] = Symbol(key);
      }
    }
  }
  return Object.freeze(ret);
};

export default keyMirror;