perf: remove flush reassignment

Author: dougwilson

HISTORY.md

@@ -18,6 +18,7 @@ unreleased
     - perf: hoist regex declaration
     - perf: use regex to extract mime
   * perf: enable strict mode
+  * perf: remove flush reassignment
   * perf: simplify threshold detection
 
 1.4.4 / 2015-05-11

index.js

@@ -57,8 +57,12 @@ function compression(options) {
     var end = res.end
     var stream
 
-    // flush is noop by default
-    res.flush = noop;
+    // flush
+    res.flush = function flush() {
+      if (stream) {
+        stream.flush()
+      }
+    }
 
     // proxy
 
@@ -178,11 +182,6 @@ function compression(options) {
       // add bufferred listeners to stream
       addListeners(stream, stream.on, listeners)
 
-      // overwrite the flush method
-      res.flush = function(){
-        stream.flush();
-      }
-
       // header fields
       res.setHeader('Content-Encoding', method);
       res.removeHeader('Content-Length');
@@ -232,13 +231,6 @@ function chunkLength(chunk, encoding) {
     : chunk.length
 }
 
-/**
- * No-operation function
- * @private
- */
-
-function noop(){}
-
 /**
  * Default filter function.
  * @private