node_modules

1 files changed, 31 insertions, 60 deletions

diff --git a/node_modules/readable-stream/lib/_stream_transform.js b/node_modules/readable-stream/lib/_stream_transform.js
index 905c5e450..dbc996ede 100644
--- a/node_modules/readable-stream/lib/_stream_transform.js
+++ b/node_modules/readable-stream/lib/_stream_transform.js
@@ -1,25 +1,3 @@
-// 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
 // something with the data.  Sometimes it's called a "filter",
 // but that's not a great name for it, since that implies a thing where
@@ -62,6 +40,8 @@
 // would be consumed, and then the rest would wait (un-transformed) until
 // the results of the previous transformed chunk were consumed.
 
+'use strict';
+
 module.exports = Transform;
 
 var Duplex = require('./_stream_duplex');
@@ -73,9 +53,8 @@ util.inherits = require('inherits');
 
 util.inherits(Transform, Duplex);
 
-
-function TransformState(options, stream) {
-  this.afterTransform = function(er, data) {
+function TransformState(stream) {
+  this.afterTransform = function (er, data) {
     return afterTransform(stream, er, data);
   };
 
@@ -83,6 +62,7 @@ function TransformState(options, stream) {
   this.transforming = false;
   this.writecb = null;
   this.writechunk = null;
+  this.writeencoding = null;
 }
 
 function afterTransform(stream, er, data) {
@@ -91,17 +71,14 @@ function afterTransform(stream, er, data) {
 
   var cb = ts.writecb;
 
-  if (!cb)
-    return stream.emit('error', new Error('no writecb in Transform class'));
+  if (!cb) return stream.emit('error', new Error('no writecb in Transform class'));
 
   ts.writechunk = null;
   ts.writecb = null;
 
-  if (!util.isNullOrUndefined(data))
-    stream.push(data);
+  if (data !== null && data !== undefined) stream.push(data);
 
-  if (cb)
-    cb(er);
+  cb(er);
 
   var rs = stream._readableState;
   rs.reading = false;
@@ -110,14 +87,12 @@ function afterTransform(stream, er, data) {
   }
 }
 
-
 function Transform(options) {
-  if (!(this instanceof Transform))
-    return new Transform(options);
+  if (!(this instanceof Transform)) return new Transform(options);
 
   Duplex.call(this, options);
 
-  this._transformState = new TransformState(options, this);
+  this._transformState = new TransformState(this);
 
   // when the writable side finishes, then flush out anything remaining.
   var stream = this;
@@ -130,17 +105,20 @@ function Transform(options) {
   // sync guard flag.
   this._readableState.sync = false;
 
-  this.once('prefinish', function() {
-    if (util.isFunction(this._flush))
-      this._flush(function(er) {
-        done(stream, er);
-      });
-    else
-      done(stream);
+  if (options) {
+    if (typeof options.transform === 'function') this._transform = options.transform;
+
+    if (typeof options.flush === 'function') this._flush = options.flush;
+  }
+
+  this.once('prefinish', function () {
+    if (typeof this._flush === 'function') this._flush(function (er) {
+      done(stream, er);
+    });else done(stream);
   });
 }
 
-Transform.prototype.push = function(chunk, encoding) {
+Transform.prototype.push = function (chunk, encoding) {
   this._transformState.needTransform = false;
   return Duplex.prototype.push.call(this, chunk, encoding);
 };
@@ -155,31 +133,28 @@ Transform.prototype.push = function(chunk, encoding) {
 // Call `cb(err)` when you are done with this chunk.  If you pass
 // an error, then that'll put the hurt on the whole operation.  If you
 // never call cb(), then you'll never get another chunk.
-Transform.prototype._transform = function(chunk, encoding, cb) {
-  throw new Error('not implemented');
+Transform.prototype._transform = function (chunk, encoding, cb) {
+  throw new Error('Not implemented');
 };
 
-Transform.prototype._write = function(chunk, encoding, cb) {
+Transform.prototype._write = function (chunk, encoding, cb) {
   var ts = this._transformState;
   ts.writecb = cb;
   ts.writechunk = chunk;
   ts.writeencoding = encoding;
   if (!ts.transforming) {
     var rs = this._readableState;
-    if (ts.needTransform ||
-        rs.needReadable ||
-        rs.length < rs.highWaterMark)
-      this._read(rs.highWaterMark);
+    if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
   }
 };
 
 // Doesn't matter what the args are here.
 // _transform does all the work.
 // That we got here means that the readable side wants more data.
-Transform.prototype._read = function(n) {
+Transform.prototype._read = function (n) {
   var ts = this._transformState;
 
-  if (!util.isNull(ts.writechunk) && ts.writecb && !ts.transforming) {
+  if (ts.writechunk !== null && ts.writecb && !ts.transforming) {
     ts.transforming = true;
     this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
   } else {
@@ -189,21 +164,17 @@ Transform.prototype._read = function(n) {
   }
 };
 
-
 function done(stream, er) {
-  if (er)
-    return stream.emit('error', er);
+  if (er) return stream.emit('error', er);
 
   // if there's nothing in the write buffer, then that means
   // that nothing more will ever be provided
   var ws = stream._writableState;
   var ts = stream._transformState;
 
-  if (ws.length)
-    throw new Error('calling transform done when ws.length != 0');
+  if (ws.length) throw new Error('Calling transform done when ws.length != 0');
 
-  if (ts.transforming)
-    throw new Error('calling transform done when still transforming');
+  if (ts.transforming) throw new Error('Calling transform done when still transforming');
 
   return stream.push(null);
-}
+}
\ No newline at end of file