| 1 | // @remove-on-eject-begin
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| 2 | /**
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| 3 | * Copyright (c) 2015-present, Facebook, Inc.
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| 4 | * All rights reserved.
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| 5 | *
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| 6 | * This source code is licensed under the BSD-style license found in the
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| 7 | * LICENSE file in the root directory of this source tree. An additional grant
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| 8 | * of patent rights can be found in the PATENTS file in the same directory.
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| 9 | */
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| 10 | // @remove-on-eject-end
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| 11 | ;
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| 12 |
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| 13 | if (typeof Promise === 'undefined') {
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| 14 | // Rejection tracking prevents a common issue where React gets into an
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| 15 | // inconsistent state due to an error, but it gets swallowed by a Promise,
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| 16 | // and the user has no idea what causes React's erratic future behavior.
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| 17 | require('promise/lib/rejection-tracking').enable();
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| 18 | window.Promise = require('promise/lib/es6-extensions.js');
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| 19 | }
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| 20 |
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| 21 | // fetch() polyfill for making API calls.
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| 22 | require('whatwg-fetch');
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| 23 |
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| 24 | // Object.assign() is commonly used with React.
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| 25 | // It will use the native implementation if it's present and isn't buggy.
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| 26 | Object.assign = require('object-assign');
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