32 lines
1.0 KiB
32 lines
1.0 KiB
/* Copyright 2017 Mozilla Foundation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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'use strict'; |
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var isReadableStreamSupported = false; |
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if (typeof ReadableStream !== 'undefined') { |
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try { |
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new ReadableStream({ |
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start: function start(controller) { |
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controller.close(); |
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} |
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}); |
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isReadableStreamSupported = true; |
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} catch (e) {} |
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} |
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if (isReadableStreamSupported) { |
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exports.ReadableStream = ReadableStream; |
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} else { |
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exports.ReadableStream = require('../../external/streams/streams-lib').ReadableStream; |
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} |