stream: use fast-path for only large inputs

nodejs · Nov 27, 2022 · 9ecac0b · 9ecac0b
1 parent 2661702
commit 9ecac0b
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/lib/internal/streams/utils.js b/lib/internal/streams/utils.js
@@ -12,6 +12,7 @@ const {
 const { normalizeEncoding } = require('internal/util');
 const { FastBuffer } = require('internal/buffer');
 const { TextEncoder } = require('internal/encoding');
+const { isTypedArray } = require('internal/util/types');
 
 let buffer;
 function lazyLoadBuffer() {
@@ -277,13 +278,14 @@ function isErrored(stream) {
 
 function encodeWithFastPath(input, encoding) {
   const enc = normalizeEncoding(encoding);
+  const byteLength = enc === 'utf8' && isTypedArray(input) && TypedArrayPrototypeGetByteLength(input);
 
-  if (enc === 'utf8') {
+  if (byteLength > 512) {
     const buf = encoder.encode(input);
     return new FastBuffer(
       TypedArrayPrototypeGetBuffer(buf),
       TypedArrayPrototypeGetByteOffset(buf),
-      TypedArrayPrototypeGetByteLength(buf),
+      byteLength,
     );
   }