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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
 
'use strict';
 
const {
  ObjectDefineProperty,
} = primordials;
 
const {
  promisify: { custom: customPromisify },
} = require('internal/util');
 
const pipeline = require('internal/streams/pipeline');
const eos = require('internal/streams/end-of-stream');
const internalBuffer = require('internal/buffer');
 
const promises = require('stream/promises');
 
const Stream = module.exports = require('internal/streams/legacy').Stream;
Stream.Readable = require('internal/streams/readable');
Stream.Writable = require('internal/streams/writable');
Stream.Duplex = require('internal/streams/duplex');
Stream.Transform = require('internal/streams/transform');
Stream.PassThrough = require('internal/streams/passthrough');
Stream.pipeline = pipeline;
const { addAbortSignal } = require('internal/streams/add-abort-signal');
Stream.addAbortSignal = addAbortSignal;
Stream.finished = eos;
 
ObjectDefineProperty(Stream, 'promises', {
  configurable: true,
  enumerable: true,
  get() {
    return promises;
  }
});
 
ObjectDefineProperty(pipeline, customPromisify, {
  enumerable: true,
  get() {
    return promises.pipeline;
  }
});
 
ObjectDefineProperty(eos, customPromisify, {
  enumerable: true,
  get() {
    return promises.finished;
  }
});
 
// Backwards-compat with node 0.4.x
Stream.Stream = Stream;
 
Stream._isUint8Array = require('internal/util/types').isUint8Array;
Stream._uint8ArrayToBuffer = function _uint8ArrayToBuffer(chunk) {
  return new internalBuffer.FastBuffer(chunk.buffer,
                                       chunk.byteOffset,
                                       chunk.byteLength);
};