1 files changed, 7 insertions, 5 deletions
diff --git a/deps/npm/node_modules/readable-stream/lib/_stream_transform.js b/deps/npm/node_modules/readable-stream/lib/_stream_transform.js
index dbc996ede6..cd2583207f 100644
--- a/deps/npm/node_modules/readable-stream/lib/_stream_transform.js
+++ b/deps/npm/node_modules/readable-stream/lib/_stream_transform.js
@@ -94,7 +94,6 @@ function Transform(options) {
 
   this._transformState = new TransformState(this);
 
-  // when the writable side finishes, then flush out anything remaining.
   var stream = this;
 
   // start out asking for a readable event once data is transformed.
@@ -111,9 +110,10 @@ function Transform(options) {
     if (typeof options.flush === 'function') this._flush = options.flush;
   }
 
+  // When the writable side finishes, then flush out anything remaining.
   this.once('prefinish', function () {
-    if (typeof this._flush === 'function') this._flush(function (er) {
-      done(stream, er);
+    if (typeof this._flush === 'function') this._flush(function (er, data) {
+      done(stream, er, data);
     });else done(stream);
   });
 }
@@ -134,7 +134,7 @@ Transform.prototype.push = function (chunk, encoding) {
 // 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');
+  throw new Error('_transform() is not implemented');
 };
 
 Transform.prototype._write = function (chunk, encoding, cb) {
@@ -164,9 +164,11 @@ Transform.prototype._read = function (n) {
   }
 };
 
-function done(stream, er) {
+function done(stream, er, data) {
   if (er) return stream.emit('error', er);
 
+  if (data !== null && data !== undefined) stream.push(data);
+
   // if there's nothing in the write buffer, then that means
   // that nothing more will ever be provided
   var ws = stream._writableState;