fixup! fixup! fixup! lib: handle windows reserved device names on UNC

lib/path.js

@@ -564,15 +564,33 @@ const win32 = {
     }
 
     // Skip normalization when reserved device names are present
-    const splitRegexp = /\\+/;
-    const parts = StringPrototypeSplit(joined, splitRegexp);
+    const parts = [];
+    let part = '';
+
+    for (let i = 0; i < joined.length; i++) {
+      if (joined[i] === '\\') {
+        if (part) parts.push(part);
+        part = '';
+        // Skip consecutive backslashes
+        while (i + 1 < joined.length && joined[i + 1] === '\\') i++;
+      } else {
+        part += joined[i];
+      }
+    }
+    // Add the final part if any
+    if (part) parts.push(part);
 
-    const replaceRegexp = /\//g;
+    // Check if any part has a Windows reserved name
     if (parts.some((p) => {
       const colonIndex = StringPrototypeIndexOf(p, ':');
       return colonIndex !== -1 && isWindowsReservedName(p, colonIndex);
     })) {
-      return StringPrototypeReplace(joined, replaceRegexp, '\\');
+      // Replace forward slashes with backslashes
+      let result = '';
+      for (let i = 0; i < joined.length; i++) {
+        result += joined[i] === '/' ? '\\' : joined[i];
+      }
+      return result;
     }
 
     return win32.normalize(joined);