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readable-stream - npm Package Compare versions

Comparing version 2.2.11 to 2.3.0

lib/internal/streams/destroy.js

57

lib/_stream_duplex.js

@@ -0,1 +1,22 @@

// 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.
// a duplex stream is just a stream that is both readable and writable.

@@ -10,2 +31,6 @@ // Since JS doesn't have multiple prototypal inheritance, this class

var processNextTick = require('process-nextick-args');
/*</replacement>*/
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {

@@ -22,6 +47,2 @@ var keys = [];

/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/
/*<replacement>*/
var util = require('core-util-is');

@@ -73,2 +94,30 @@ util.inherits = require('inherits');

Object.defineProperty(Duplex.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (this._readableState === undefined || this._writableState === undefined) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
this._writableState.destroyed = value;
}
});
Duplex.prototype._destroy = function (err, cb) {
this.push(null);
this.end();
processNextTick(cb, err);
};
function forEach(xs, f) {

@@ -75,0 +124,0 @@ for (var i = 0, l = xs.length; i < l; i++) {

21

lib/_stream_passthrough.js

@@ -0,1 +1,22 @@

// 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.
// a passthrough stream.

@@ -2,0 +23,0 @@ // basically just the most minimal sort of Transform stream.

216

lib/_stream_readable.js

@@ -0,9 +1,31 @@

// 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';
module.exports = Readable;
/*<replacement>*/
/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/
module.exports = Readable;
/*<replacement>*/

@@ -33,2 +55,8 @@ var isArray = require('isarray');

var Buffer = require('safe-buffer').Buffer;
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Object.prototype.toString.call(obj) === '[object Uint8Array]' || Buffer.isBuffer(obj);
}
/*</replacement>*/

@@ -52,2 +80,3 @@

var BufferList = require('./internal/streams/BufferList');
var destroyImpl = require('./internal/streams/destroy');
var StringDecoder;

@@ -91,3 +120,3 @@

// cast to ints.
this.highWaterMark = ~~this.highWaterMark;
this.highWaterMark = Math.floor(this.highWaterMark);

@@ -106,6 +135,6 @@ // A linked list is used to store data chunks instead of an array because the

// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, because any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
// a flag to be able to tell if the event 'readable'/'data' is emitted
// immediately, or on a later tick. We set this to true at first, because
// any actions that shouldn't happen until "later" should generally also
// not happen before the first read call.
this.sync = true;

@@ -120,2 +149,5 @@

// has it been destroyed
this.destroyed = false;
// Crypto is kind of old and crusty. Historically, its default string

@@ -126,6 +158,2 @@ // encoding is 'binary' so we have to make this configurable.

// when piping, we only care about 'readable' events that happen
// after read()ing all the bytes and not getting any pushback.
this.ranOut = false;
// the number of writers that are awaiting a drain event in .pipe()s

@@ -156,7 +184,38 @@ this.awaitDrain = 0;

if (options && typeof options.read === 'function') this._read = options.read;
if (options) {
if (typeof options.read === 'function') this._read = options.read;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
}
Stream.call(this);
}
Object.defineProperty(Readable.prototype, 'destroyed', {
get: function () {
if (this._readableState === undefined) {
return false;
}
return this._readableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._readableState) {
return;
}
// backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
}
});
Readable.prototype.destroy = destroyImpl.destroy;
Readable.prototype._undestroy = destroyImpl.undestroy;
Readable.prototype._destroy = function (err, cb) {
this.push(null);
cb(err);
};
// Manually shove something into the read() buffer.

@@ -168,12 +227,18 @@ // This returns true if the highWaterMark has not been hit yet,

var state = this._readableState;
var skipChunkCheck;
if (!state.objectMode && typeof chunk === 'string') {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = Buffer.from(chunk, encoding);
encoding = '';
if (!state.objectMode) {
if (typeof chunk === 'string') {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = Buffer.from(chunk, encoding);
encoding = '';
}
skipChunkCheck = true;
}
} else {
skipChunkCheck = true;
}
return readableAddChunk(this, state, chunk, encoding, false);
return readableAddChunk(this, chunk, encoding, false, skipChunkCheck);
};

@@ -183,53 +248,36 @@

Readable.prototype.unshift = function (chunk) {
var state = this._readableState;
return readableAddChunk(this, state, chunk, '', true);
return readableAddChunk(this, chunk, null, true, false);
};
Readable.prototype.isPaused = function () {
return this._readableState.flowing === false;
};
function readableAddChunk(stream, state, chunk, encoding, addToFront) {
var er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (chunk === null) {
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) {
var state = stream._readableState;
if (chunk === null) {
state.reading = false;
onEofChunk(stream, state);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (state.ended && !addToFront) {
var e = new Error('stream.push() after EOF');
stream.emit('error', e);
} else if (state.endEmitted && addToFront) {
var _e = new Error('stream.unshift() after end event');
stream.emit('error', _e);
} else {
var skipAdd;
if (state.decoder && !addToFront && !encoding) {
chunk = state.decoder.write(chunk);
skipAdd = !state.objectMode && chunk.length === 0;
} else {
var er;
if (!skipChunkCheck) er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (typeof chunk !== 'string' && Object.getPrototypeOf(chunk) !== Buffer.prototype && !state.objectMode) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (!addToFront) state.reading = false;
// Don't add to the buffer if we've decoded to an empty string chunk and
// we're not in object mode
if (!skipAdd) {
// if we want the data now, just emit it.
if (state.flowing && state.length === 0 && !state.sync) {
stream.emit('data', chunk);
stream.read(0);
if (addToFront) {
if (state.endEmitted) stream.emit('error', new Error('stream.unshift() after end event'));else addChunk(stream, state, chunk, true);
} else if (state.ended) {
stream.emit('error', new Error('stream.push() after EOF'));
} else {
state.reading = false;
if (state.decoder && !encoding) {
chunk = state.decoder.write(chunk);
if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state);
} else {
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
if (state.needReadable) emitReadable(stream);
addChunk(stream, state, chunk, false);
}
}
maybeReadMore(stream, state);
} else if (!addToFront) {
state.reading = false;
}
} else if (!addToFront) {
state.reading = false;
}

@@ -240,2 +288,24 @@

function addChunk(stream, state, chunk, addToFront) {
if (state.flowing && state.length === 0 && !state.sync) {
stream.emit('data', chunk);
stream.read(0);
} else {
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk);
if (state.needReadable) emitReadable(stream);
}
maybeReadMore(stream, state);
}
function chunkInvalid(state, chunk) {
var er;
if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
// if it's past the high water mark, we can push in some more.

@@ -252,2 +322,6 @@ // Also, if we have no data yet, we can stand some

Readable.prototype.isPaused = function () {
return this._readableState.flowing === false;
};
// backwards compatibility.

@@ -401,10 +475,2 @@ Readable.prototype.setEncoding = function (enc) {

function chunkInvalid(state, chunk) {
var er = null;
if (!Buffer.isBuffer(chunk) && typeof chunk !== 'string' && chunk !== null && chunk !== undefined && !state.objectMode) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
function onEofChunk(stream, state) {

@@ -501,6 +567,9 @@ if (state.ended) return;

dest.on('unpipe', onunpipe);
function onunpipe(readable) {
function onunpipe(readable, unpipeInfo) {
debug('onunpipe');
if (readable === src) {
cleanup();
if (unpipeInfo && unpipeInfo.hasUnpiped === false) {
unpipeInfo.hasUnpiped = true;
cleanup();
}
}

@@ -624,2 +693,3 @@ }

var state = this._readableState;
var unpipeInfo = { hasUnpiped: false };

@@ -640,3 +710,3 @@ // if we're not piping anywhere, then do nothing.

state.flowing = false;
if (dest) dest.emit('unpipe', this);
if (dest) dest.emit('unpipe', this, unpipeInfo);
return this;

@@ -656,3 +726,3 @@ }

for (var i = 0; i < len; i++) {
dests[i].emit('unpipe', this);
dests[i].emit('unpipe', this, unpipeInfo);
}return this;

@@ -669,3 +739,3 @@ }

dest.emit('unpipe', this);
dest.emit('unpipe', this, unpipeInfo);

@@ -691,3 +761,3 @@ return this;

} else if (state.length) {
emitReadable(this, state);
emitReadable(this);
}

@@ -694,0 +764,0 @@ }

34

lib/_stream_transform.js

@@ -0,1 +1,22 @@

// 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.
// a transform stream is a readable/writable stream where you do

@@ -74,3 +95,5 @@ // something with the data. Sometimes it's called a "filter",

if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));
if (!cb) {
return stream.emit('error', new Error('write callback called multiple times'));
}

@@ -168,2 +191,11 @@ ts.writechunk = null;

Transform.prototype._destroy = function (err, cb) {
var _this = this;
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
_this.emit('close');
});
};
function done(stream, er, data) {

@@ -170,0 +202,0 @@ if (er) return stream.emit('error', er);

189

lib/_stream_writable.js

@@ -0,1 +1,22 @@

// 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.
// A bit simpler than readable streams.

@@ -7,8 +28,26 @@ // Implement an async ._write(chunk, encoding, cb), and it'll handle all

module.exports = Writable;
/*<replacement>*/
/*<replacement>*/
var processNextTick = require('process-nextick-args');
/*</replacement>*/
module.exports = Writable;
/* <replacement> */
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
this.next = null;
}
// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
this.next = null;
this.entry = null;
this.finish = onCorkedFinish.bind(undefined, this, state);
}
/* </replacement> */
/*<replacement>*/

@@ -41,4 +80,12 @@ var asyncWrite = !process.browser && ['v0.10', 'v0.9.'].indexOf(process.version.slice(0, 5)) > -1 ? setImmediate : processNextTick;

var Buffer = require('safe-buffer').Buffer;
function _uint8ArrayToBuffer(chunk) {
return Buffer.from(chunk);
}
function _isUint8Array(obj) {
return Object.prototype.toString.call(obj) === '[object Uint8Array]' || Buffer.isBuffer(obj);
}
/*</replacement>*/
var destroyImpl = require('./internal/streams/destroy');
util.inherits(Writable, Stream);

@@ -48,9 +95,2 @@

function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
this.next = null;
}
function WritableState(options, stream) {

@@ -75,4 +115,7 @@ Duplex = Duplex || require('./_stream_duplex');

// cast to ints.
this.highWaterMark = ~~this.highWaterMark;
this.highWaterMark = Math.floor(this.highWaterMark);
// if _final has been called
this.finalCalled = false;
// drain event flag.

@@ -87,2 +130,5 @@ this.needDrain = false;

// has it been destroyed
this.destroyed = false;
// should we decode strings into buffers before passing to _write?

@@ -169,3 +215,3 @@ // this is here so that some node-core streams can optimize string

return this.getBuffer();
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.')
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003')
});

@@ -216,2 +262,6 @@ } catch (_) {}

if (typeof options.writev === 'function') this._writev = options.writev;
if (typeof options.destroy === 'function') this._destroy = options.destroy;
if (typeof options.final === 'function') this._final = options.final;
}

@@ -257,4 +307,8 @@

var ret = false;
var isBuf = Buffer.isBuffer(chunk);
var isBuf = _isUint8Array(chunk) && !state.objectMode;
if (isBuf && !Buffer.isBuffer(chunk)) {
chunk = _uint8ArrayToBuffer(chunk);
}
if (typeof encoding === 'function') {

@@ -313,4 +367,8 @@ cb = encoding;

if (!isBuf) {
chunk = decodeChunk(state, chunk, encoding);
if (Buffer.isBuffer(chunk)) encoding = 'buffer';
var newChunk = decodeChunk(state, chunk, encoding);
if (chunk !== newChunk) {
isBuf = true;
encoding = 'buffer';
chunk = newChunk;
}
}

@@ -327,3 +385,9 @@ var len = state.objectMode ? 1 : chunk.length;

var last = state.lastBufferedRequest;
state.lastBufferedRequest = new WriteReq(chunk, encoding, cb);
state.lastBufferedRequest = {
chunk: chunk,
encoding: encoding,
isBuf: isBuf,
callback: cb,
next: null
};
if (last) {

@@ -353,3 +417,3 @@ last.next = state.lastBufferedRequest;

--state.pendingcb;
if (sync) processNextTick(cb, er);else cb(er);
if (sync) processNextTick(afterError, stream, state, cb, er);else afterError(stream, state, cb, er);

@@ -360,2 +424,7 @@ stream._writableState.errorEmitted = true;

function afterError(stream, state, cb, err) {
cb(err);
finishMaybe(stream, state);
}
function onwriteStateUpdate(state) {

@@ -423,7 +492,10 @@ state.writing = false;

var count = 0;
var allBuffers = true;
while (entry) {
buffer[count] = entry;
if (!entry.isBuf) allBuffers = false;
entry = entry.next;
count += 1;
}
buffer.allBuffers = allBuffers;

@@ -502,7 +574,23 @@ doWrite(stream, state, true, state.length, buffer, '', holder.finish);

}
function prefinish(stream, state) {
if (!state.prefinished) {
function callFinal(stream, state) {
stream._final(function (err) {
state.pendingcb--;
if (err) {
stream.emit('error', err);
}
state.prefinished = true;
stream.emit('prefinish');
finishMaybe(stream, state);
});
}
function prefinish(stream, state) {
if (!state.prefinished && !state.finalCalled) {
if (typeof stream._final === 'function') {
state.pendingcb++;
state.finalCalled = true;
processNextTick(callFinal, stream, state);
} else {
state.prefinished = true;
stream.emit('prefinish');
}
}

@@ -514,8 +602,6 @@ }

if (need) {
prefinish(stream, state);
if (state.pendingcb === 0) {
prefinish(stream, state);
state.finished = true;
stream.emit('finish');
} else {
prefinish(stream, state);
}

@@ -536,24 +622,43 @@ }

// It seems a linked list but it is not
// there will be only 2 of these for each stream
function CorkedRequest(state) {
var _this = this;
function onCorkedFinish(corkReq, state, err) {
var entry = corkReq.entry;
corkReq.entry = null;
while (entry) {
var cb = entry.callback;
state.pendingcb--;
cb(err);
entry = entry.next;
}
if (state.corkedRequestsFree) {
state.corkedRequestsFree.next = corkReq;
} else {
state.corkedRequestsFree = corkReq;
}
}
this.next = null;
this.entry = null;
this.finish = function (err) {
var entry = _this.entry;
_this.entry = null;
while (entry) {
var cb = entry.callback;
state.pendingcb--;
cb(err);
entry = entry.next;
Object.defineProperty(Writable.prototype, 'destroyed', {
get: function () {
if (this._writableState === undefined) {
return false;
}
if (state.corkedRequestsFree) {
state.corkedRequestsFree.next = _this;
} else {
state.corkedRequestsFree = _this;
return this._writableState.destroyed;
},
set: function (value) {
// we ignore the value if the stream
// has not been initialized yet
if (!this._writableState) {
return;
}
};
}
// backward compatibility, the user is explicitly
// managing destroyed
this._writableState.destroyed = value;
}
});
Writable.prototype.destroy = destroyImpl.destroy;
Writable.prototype._undestroy = destroyImpl.undestroy;
Writable.prototype._destroy = function (err, cb) {
this.end();
cb(err);
};

124

lib/internal/streams/BufferList.js

@@ -5,61 +5,81 @@ 'use strict';

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
var Buffer = require('safe-buffer').Buffer;
/*</replacement>*/
module.exports = BufferList;
function BufferList() {
this.head = null;
this.tail = null;
this.length = 0;
function copyBuffer(src, target, offset) {
src.copy(target, offset);
}
BufferList.prototype.push = function (v) {
var entry = { data: v, next: null };
if (this.length > 0) this.tail.next = entry;else this.head = entry;
this.tail = entry;
++this.length;
};
module.exports = function () {
function BufferList() {
_classCallCheck(this, BufferList);
BufferList.prototype.unshift = function (v) {
var entry = { data: v, next: this.head };
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
};
this.head = null;
this.tail = null;
this.length = 0;
}
BufferList.prototype.shift = function () {
if (this.length === 0) return;
var ret = this.head.data;
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
--this.length;
return ret;
};
_createClass(BufferList, [{
key: 'push',
value: function push(v) {
var entry = { data: v, next: null };
if (this.length > 0) this.tail.next = entry;else this.head = entry;
this.tail = entry;
++this.length;
}
}, {
key: 'unshift',
value: function unshift(v) {
var entry = { data: v, next: this.head };
if (this.length === 0) this.tail = entry;
this.head = entry;
++this.length;
}
}, {
key: 'shift',
value: function shift() {
if (this.length === 0) return;
var ret = this.head.data;
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next;
--this.length;
return ret;
}
}, {
key: 'clear',
value: function clear() {
this.head = this.tail = null;
this.length = 0;
}
}, {
key: 'join',
value: function join(s) {
if (this.length === 0) return '';
var p = this.head;
var ret = '' + p.data;
while (p = p.next) {
ret += s + p.data;
}return ret;
}
}, {
key: 'concat',
value: function concat(n) {
if (this.length === 0) return Buffer.alloc(0);
if (this.length === 1) return this.head.data;
var ret = Buffer.allocUnsafe(n >>> 0);
var p = this.head;
var i = 0;
while (p) {
copyBuffer(p.data, ret, i);
i += p.data.length;
p = p.next;
}
return ret;
}
}]);
BufferList.prototype.clear = function () {
this.head = this.tail = null;
this.length = 0;
};
BufferList.prototype.join = function (s) {
if (this.length === 0) return '';
var p = this.head;
var ret = '' + p.data;
while (p = p.next) {
ret += s + p.data;
}return ret;
};
BufferList.prototype.concat = function (n) {
if (this.length === 0) return Buffer.alloc(0);
if (this.length === 1) return this.head.data;
var ret = Buffer.allocUnsafe(n >>> 0);
var p = this.head;
var i = 0;
while (p) {
p.data.copy(ret, i);
i += p.data.length;
p = p.next;
}
return ret;
};
return BufferList;
}();

6

package.json
{
"name": "readable-stream",
"version": "2.2.11",
"version": "2.3.0",
"description": "Streams3, a user-land copy of the stream library from Node.js",

@@ -8,6 +8,6 @@ "main": "readable.js",

"core-util-is": "~1.0.0",
"inherits": "~2.0.1",
"inherits": "~2.0.3",
"isarray": "~1.0.0",
"process-nextick-args": "~1.0.6",
"safe-buffer": "~5.0.1",
"safe-buffer": "~5.1.0",
"string_decoder": "~1.0.0",

@@ -14,0 +14,0 @@ "util-deprecate": "~1.0.1"

4

README.md
# readable-stream
***Node-core v7.0.0 streams for userland*** [![Build Status](https://travis-ci.org/nodejs/readable-stream.svg?branch=master)](https://travis-ci.org/nodejs/readable-stream)
***Node-core v8.1.0 streams for userland*** [![Build Status](https://travis-ci.org/nodejs/readable-stream.svg?branch=master)](https://travis-ci.org/nodejs/readable-stream)

@@ -21,3 +21,3 @@

Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v7.10.0/docs/api/stream.html).
Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v8.1.0/docs/api/stream.html).

@@ -24,0 +24,0 @@ If you want to guarantee a stable streams base, regardless of what version of

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