buffer: let Buffer.of use heap

ChALkeR · RafaelGSS · commit 012a08f6ebd7 · 2026-01-13T10:04:01.000-03:00
PR-URL: #60503 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: James M Snell <jasnell@gmail.com>
diff --git a/lib/buffer.js b/lib/buffer.js
@@ -386,8 +386,9 @@ Buffer.copyBytesFrom = function copyBytesFrom(view, offset, length) {
 // Refs: https://tc39.github.io/ecma262/#sec-%typedarray%.of
 // Refs: https://esdiscuss.org/topic/isconstructor#content-11
 const of = (...items) => {
- const newObj = createUnsafeBuffer(items.length);
- for (let k = 0; k < items.length; k++)
+ const len = items.length;
+ const newObj = new FastBuffer(len); // In heap for small sizes
+ for (let k = 0; k < len; k++)
 newObj[k] = items[k];
 return newObj;
 };

-Original file line number
+Diff line change
 // Refs: https://tc39.github.io/ecma262/#sec-%typedarray%.of
 // Refs: https://esdiscuss.org/topic/isconstructor#content-11
 constof=(...items)=>{
 -constnewObj=createUnsafeBuffer(items.length);
 -for(letk=0;k<items.length;k++)
 +constlen=items.length;
 +constnewObj=newFastBuffer(len);// In heap for small sizes
 +for(letk=0;k<len;k++)
 newObj[k]=items[k];
 returnnewObj;
 };