1 files changed, 38 insertions, 0 deletions
diff --git a/node_modules/structured-clone/clone.js b/node_modules/structured-clone/clone.js
new file mode 100644
index 000000000..df1e4884e
--- /dev/null
+++ b/node_modules/structured-clone/clone.js
@@ -0,0 +1,38 @@
+// Implement the clone algorithm directly.
+// https://developer.mozilla.org/en-US/docs/Web/Guide/API/DOM/The_structured_clone_algorithm
+
+function clone (oToBeCloned, cloned, clonedpairs)
+{
+  cloned = cloned || [];
+  clonedpairs = clonedpairs || [];
+
+  if (cloned.indexOf(oToBeCloned) > -1) {
+    return clonedpairs[cloned.indexOf(oToBeCloned)];
+  }
+
+  if (oToBeCloned === null || !(oToBeCloned instanceof Object)) { return oToBeCloned; }
+  var oClone, fConstr = oToBeCloned.constructor;
+  switch (fConstr) {
+    case RegExp:
+      oClone = new fConstr(oToBeCloned.source, "g".substr(0, Number(oToBeCloned.global)) + "i".substr(0, Number(oToBeCloned.ignoreCase)) + "m".substr(0, Number(oToBeCloned.multiline)));
+      break;
+    case Date:
+      oClone = new fConstr(oToBeCloned.getTime());
+      break;
+    // etc.
+    default:
+      if (Buffer.isBuffer(oToBeCloned)) {
+        oClone = new Buffer(oToBeCloned.length);
+        oToBeCloned.copy(oClone);
+      } else if (oToBeCloned instanceof Error) {
+        oClone = new Error(oToBeCloned.message);
+      } else {
+        oClone = new fConstr();
+        cloned.push(oToBeCloned); clonedpairs.push(oClone); 
+        for (var sProp in oToBeCloned) { oClone[sProp] = clone(oToBeCloned[sProp], cloned, clonedpairs); }
+      }
+  }
+  return oClone;
+}
+
+exports.clone = clone;
+\ No newline at end of file