fix: prevent RangeError when using large Buffers (#6961)

lib/utils.js

@@ -136,6 +136,27 @@ const isPlainObject = (val) => {
   return (prototype === null || prototype === Object.prototype || Object.getPrototypeOf(prototype) === null) && !(toStringTag in val) && !(iterator in val);
 }
 
+/**
+ * Determine if a value is an empty object (safely handles Buffers)
+ *
+ * @param {*} val The value to test
+ *
+ * @returns {boolean} True if value is an empty object, otherwise false
+ */
+const isEmptyObject = (val) => {
+  // Early return for non-objects or Buffers to prevent RangeError
+  if (!isObject(val) || isBuffer(val)) {
+    return false;
+  }
+  
+  try {
+    return Object.keys(val).length === 0 && Object.getPrototypeOf(val) === Object.prototype;
+  } catch (e) {
+    // Fallback for any other objects that might cause RangeError with Object.keys()
+    return false;
+  }
+}
+
 /**
  * Determine if a value is a Date
  *
@@ -258,6 +279,11 @@ function forEach(obj, fn, {allOwnKeys = false} = {}) {
       fn.call(null, obj[i], i, obj);
     }
   } else {
+    // Buffer check
+    if (isBuffer(obj)) {
+      return;
+    }
+
     // Iterate over object keys
     const keys = allOwnKeys ? Object.getOwnPropertyNames(obj) : Object.keys(obj);
     const len = keys.length;
@@ -271,6 +297,10 @@ function forEach(obj, fn, {allOwnKeys = false} = {}) {
 }
 
 function findKey(obj, key) {
+  if (isBuffer(obj)){
+    return null;
+  }
+
   key = key.toLowerCase();
   const keys = Object.keys(obj);
   let i = keys.length;
@@ -624,6 +654,11 @@ const toJSONObject = (obj) => {
         return;
       }
 
+      //Buffer check
+      if (isBuffer(source)) {
+        return source;
+      }
+
       if(!('toJSON' in source)) {
         stack[i] = source;
         const target = isArray(source) ? [] : {};
@@ -695,6 +730,7 @@ export default {
   isBoolean,
   isObject,
   isPlainObject,
+  isEmptyObject,
   isReadableStream,
   isRequest,
   isResponse,