stream: highWaterMark checks fix

Vishal Bisht · Vishal Bisht · commit ce30b2719ea5 · 2018-04-10T12:14:29.000+05:30
diff --git a/lib/_stream_readable.js b/lib/_stream_readable.js
@@ -311,8 +311,7 @@ function chunkInvalid(state, chunk) {
 // 'readable' event will be triggered.
 function needMoreData(state) {
   return !state.ended &&
-         (state.length < state.highWaterMark ||
-          state.length === 0);
+         (state.length < state.highWaterMark);
 }
 
 Readable.prototype.isPaused = function() {
@@ -434,7 +433,7 @@ Readable.prototype.read = function(n) {
   debug('need readable', doRead);
 
   // if we currently have less than the highWaterMark, then also read some
-  if (state.length === 0 || state.length - n < state.highWaterMark) {
+  if (state.length - n < state.highWaterMark) {
     doRead = true;
     debug('length less than watermark', doRead);
   }
