stream: refactor lazyLoadPromises

PR-URL: #34354 Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Robert Nagy <[email protected]> Reviewed-By: Zeyu Yang <[email protected]> Reviewed-By: Anna Henningsen <[email protected]>
nodejs · Jul 17, 2020 · 5aeaff6 · 5aeaff6
1 parent 08e8997
commit 5aeaff6
Showing 1 changed file with 8 additions and 6 deletions.
diff --git a/lib/stream.js b/lib/stream.js
@@ -49,28 +49,30 @@ Stream.PassThrough = require('_stream_passthrough');
 Stream.pipeline = pipeline;
 Stream.finished = eos;
 
+function lazyLoadPromises() {
+  if (promises === null) promises = require('stream/promises');
+  return promises;
+}
+
 ObjectDefineProperty(Stream, 'promises', {
   configurable: true,
   enumerable: true,
   get() {
-    if (promises === null) promises = require('stream/promises');
-    return promises;
+    return lazyLoadPromises();
   }
 });
 
 ObjectDefineProperty(pipeline, customPromisify, {
   enumerable: true,
   get() {
-    if (promises === null) promises = require('stream/promises');
-    return promises.pipeline;
+    return lazyLoadPromises().pipeline;
   }
 });
 
 ObjectDefineProperty(eos, customPromisify, {
   enumerable: true,
   get() {
-    if (promises === null) promises = require('stream/promises');
-    return promises.finished;
+    return lazyLoadPromises().finished;
   }
 });