used primordial getter for safety

Author: thisalihassan

lib/buffer.js

@@ -399,8 +399,8 @@ Buffer.copyBytesFrom = function copyBytesFrom(view, offset, length) {
 
   if (end <= start) return new FastBuffer();
 
-  const byteLength = TypedArrayPrototypeGetByteLength(view);
-  const elementSize = byteLength / viewLength;
+  const viewByteLength = TypedArrayPrototypeGetByteLength(view);
+  const elementSize = viewByteLength / viewLength;
   const srcByteOffset = TypedArrayPrototypeGetByteOffset(view) +
                         start * elementSize;
   const srcByteLength = (end - start) * elementSize;
@@ -1171,7 +1171,7 @@ function _fill(buf, value, offset, end, encoding) {
 }
 
 Buffer.prototype.write = function write(string, offset, length, encoding) {
-  const bufferLength = this.length;
+  const bufferLength = TypedArrayPrototypeGetLength(this);
   // Buffer#write(string);
   if (offset === undefined) {
     return utf8Write(this, string, 0, bufferLength);
@@ -1212,10 +1212,10 @@ Buffer.prototype.write = function write(string, offset, length, encoding) {
 };
 
 Buffer.prototype.toJSON = function toJSON() {
-  const len = this.length;
-  if (len > 0) {
-    const data = new Array(len);
-    for (let i = 0; i < len; ++i)
+  const bufferLength = TypedArrayPrototypeGetLength(this);
+  if (bufferLength > 0) {
+    const data = new Array(bufferLength);
+    for (let i = 0; i < bufferLength; ++i)
       data[i] = this[i];
     return { type: 'Buffer', data };
   }