1 files changed, 42 insertions, 0 deletions
diff --git a/node_modules/es5-ext/object/copy-deep.js b/node_modules/es5-ext/object/copy-deep.js
new file mode 100644
index 000000000..d1d39c982
--- /dev/null
+++ b/node_modules/es5-ext/object/copy-deep.js
@@ -0,0 +1,42 @@
+"use strict";
+
+var forEach       = require("./for-each")
+  , isPlainObject = require("./is-plain-object")
+  , ensureValue   = require("./valid-value")
+  , isArray       = Array.isArray
+  , copy
+  , copyItem;
+
+copyItem = function (value) {
+	var index;
+	if (!isPlainObject(value) && !isArray(value)) return value;
+	index = this[0].indexOf(value);
+	if (index === -1) return copy.call(this, value);
+	return this[1][index];
+};
+
+copy = function (source) {
+	var target = isArray(source) ? [] : {};
+	this[0].push(source);
+	this[1].push(target);
+	if (isArray(source)) {
+		source.forEach(function (value, key) {
+			target[key] = copyItem.call(this, value, key);
+		}, this);
+	} else {
+		forEach(
+			source,
+			function (value, key) {
+				target[key] = copyItem.call(this, value, key);
+			},
+			this
+		);
+	}
+	return target;
+};
+
+module.exports = function (source) {
+	var obj = Object(ensureValue(source));
+	if (obj !== source) return obj;
+	return copy.call([[], []], obj);
+};