1 | /**
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2 | * @licstart The following is the entire license notice for the
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3 | * Javascript code in this page
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4 | *
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5 | * Copyright 2017 Mozilla Foundation
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6 | *
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7 | * Licensed under the Apache License, Version 2.0 (the "License");
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8 | * you may not use this file except in compliance with the License.
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9 | * You may obtain a copy of the License at
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10 | *
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11 | * http://www.apache.org/licenses/LICENSE-2.0
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12 | *
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13 | * Unless required by applicable law or agreed to in writing, software
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14 | * distributed under the License is distributed on an "AS IS" BASIS,
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15 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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16 | * See the License for the specific language governing permissions and
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17 | * limitations under the License.
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18 | *
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19 | * @licend The above is the entire license notice for the
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20 | * Javascript code in this page
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21 | */
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22 | ;
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23 |
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24 | var isReadableStreamSupported = false;
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25 | if (typeof ReadableStream !== 'undefined') {
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26 | try {
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27 | new ReadableStream({
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28 | start: function start(controller) {
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29 | controller.close();
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30 | }
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31 | });
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32 | isReadableStreamSupported = true;
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33 | } catch (e) {}
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34 | }
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35 | if (isReadableStreamSupported) {
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36 | exports.ReadableStream = ReadableStream;
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37 | } else {
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38 | exports.ReadableStream = require('../../external/streams/streams-lib').ReadableStream;
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39 | } |
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