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9f610b5e26
PR-URL: https://github.com/nodejs/node/pull/11608 Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
73 lines
2.6 KiB
JavaScript
73 lines
2.6 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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const Buffer = require('buffer').Buffer;
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// Note: export Stream before Readable/Writable/Duplex/...
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// to avoid a cross-reference(require) issues
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const Stream = module.exports = require('internal/streams/legacy');
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Stream.Readable = require('_stream_readable');
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Stream.Writable = require('_stream_writable');
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Stream.Duplex = require('_stream_duplex');
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Stream.Transform = require('_stream_transform');
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Stream.PassThrough = require('_stream_passthrough');
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// Backwards-compat with node 0.4.x
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Stream.Stream = Stream;
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// Internal utilities
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try {
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Stream._isUint8Array = process.binding('util').isUint8Array;
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} catch (e) {
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// This throws for Node < 4.2.0 because there’s no util binding and
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// returns undefined for Node < 7.4.0.
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}
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if (!Stream._isUint8Array) {
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Stream._isUint8Array = function _isUint8Array(obj) {
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return Object.prototype.toString.call(obj) === '[object Uint8Array]';
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};
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}
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const version = process.version.substr(1).split('.');
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if (version[0] === 0 && version[1] < 12) {
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Stream._uint8ArrayToBuffer = Buffer;
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} else {
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try {
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const internalBuffer = require('internal/buffer');
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Stream._uint8ArrayToBuffer = function _uint8ArrayToBuffer(chunk) {
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return new internalBuffer.FastBuffer(chunk.buffer,
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chunk.byteOffset,
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chunk.byteLength);
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};
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} catch (e) {
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}
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if (!Stream._uint8ArrayToBuffer) {
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Stream._uint8ArrayToBuffer = function _uint8ArrayToBuffer(chunk) {
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return Buffer.prototype.slice.call(chunk);
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};
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}
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}
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