--- webkitgtk-2.4.11.orig/Source/JavaScriptCore/API/JSStringRef.h	2016-04-10 08:48:36.000000000 +0200
+++ webkitgtk-2.4.11/Source/JavaScriptCore/API/JSStringRef.h	2017-12-20 23:04:55.000000000 +0100
@@ -27,6 +27,7 @@
 #define JSStringRef_h

 #include <JavaScriptCore/JSValueRef.h>
+#include <uchar.h>

 #ifndef __cplusplus
 #include <stdbool.h>
@@ -43,7 +44,7 @@
 @typedef JSChar
 @abstract A Unicode character.
 */
-    typedef unsigned short JSChar;
+    typedef char16_t JSChar;
 #else
     typedef wchar_t JSChar;
 #endif