--- /dev/null
+++ dyld/dyld-1340/common/JSON.h
@@ -0,0 +1,95 @@
+/*
+ * Copyright (c) 2017 Apple Inc. All rights reserved.
+ *
+ * @APPLE_LICENSE_HEADER_START@
+ *
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this
+ * file.
+ *
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ *
+ * @APPLE_LICENSE_HEADER_END@
+ */
+
+
+
+#ifndef __JSON_H__
+#define __JSON_H__
+
+#include <string.h>
+
+#include <string>
+#include <map>
+#include <sstream>
+#include <vector>
+
+namespace json {
+
+enum class NodeValueType {
+    Default,
+    String,
+    Array,
+    Map,
+    RawValue,
+};
+
+struct Node
+{
+    NodeValueType               type = NodeValueType::Default;
+    std::string                 value;
+    std::map<std::string, Node> map;
+    std::vector<Node>           array;
+
+    inline Node()
+    : type(NodeValueType::Default), value(), map(), array() { }
+
+    inline Node(std::string string)
+    : type(NodeValueType::String), value(string), map(), array() { }
+
+    inline Node(const char *string) : Node(std::string{string}) { }
+
+    inline Node(bool b)
+    : type(NodeValueType::RawValue), value(b ? "true" : "false")
+    , map(), array() { }
+
+    inline Node(int64_t i64)
+    : type(NodeValueType::RawValue), value(), map(), array()
+    {
+        std::ostringstream os{};
+        os << i64;
+        value = os.str();
+    }
+
+    inline Node(uint64_t u64)
+    : type(NodeValueType::RawValue), value(), map(), array()
+    {
+        std::ostringstream os{};
+        os << u64;
+        value = os.str();
+    }
+
+    // remove node* initializers to avoid implicit conversion to value types
+    inline Node(const Node*) = delete;
+    inline Node(Node*) = delete;
+};
+
+static inline Node makeNode(std::string value) {
+    Node node;
+    node.value = value;
+    return node;
+}
+
+} // namespace json
+
+
+#endif // __JSON_H__