stream: re-use existing once() implementation

PR-URL: #24991 Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Anto Aravinth <anto.aravinth.cse@gmail.com> Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
nodejs · Feb 12, 2019 · 3f969d6 · 3f969d6
1 parent 48c5413
commit 3f969d6
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diff --git a/lib/internal/streams/end-of-stream.js b/lib/internal/streams/end-of-stream.js
@@ -6,22 +6,14 @@
 const {
   ERR_STREAM_PREMATURE_CLOSE
 } = require('internal/errors').codes;
+const { once } = require('internal/util');
 
 function noop() {}
 
 function isRequest(stream) {
   return stream.setHeader && typeof stream.abort === 'function';
 }
 
-function once(callback) {
-  let called = false;
-  return function(err) {
-    if (called) return;
-    called = true;
-    callback.call(this, err);
-  };
-}
-
 function eos(stream, opts, callback) {
   if (typeof opts === 'function') return eos(stream, null, opts);
   if (!opts) opts = {};

diff --git a/lib/internal/util.js b/lib/internal/util.js
@@ -368,7 +368,7 @@ function once(callback) {
   return function(...args) {
     if (called) return;
     called = true;
-    callback(...args);
+    callback.apply(this, args);
   };
 }