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/*
 * Copyright 2016 The Closure Compiler Authors.
 *
 * 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.
 */

'require util/polyfill';
'require es6/util/iteratorfromarray';

$jscomp.polyfill('Array.prototype.entries', function(orig) {
  if (orig) return orig;

  /**
   * Returns an iterator of [key, value] arrays, one for each entry
   * in the given array.
   *
   * @this {!IArrayLike}
   * @return {!IteratorIterable>}
   * @template VALUE
   * @suppress {reportUnknownTypes}
   */
  var polyfill = function() {
    return $jscomp.iteratorFromArray(
        this, function(i, v) { return [i, v]; });
  };

  return polyfill;
}, 'es6', 'es3');




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