1 files changed, 53 insertions, 0 deletions
diff --git a/node_modules/fast-deep-equal/react.js b/node_modules/fast-deep-equal/react.js
new file mode 100644
index 000000000..3489b9833
--- /dev/null
+++ b/node_modules/fast-deep-equal/react.js
@@ -0,0 +1,53 @@
+'use strict';
+
+// do not edit .js files directly - edit src/index.jst
+
+
+
+module.exports = function equal(a, b) {
+  if (a === b) return true;
+
+  if (a && b && typeof a == 'object' && typeof b == 'object') {
+    if (a.constructor !== b.constructor) return false;
+
+    var length, i, keys;
+    if (Array.isArray(a)) {
+      length = a.length;
+      if (length != b.length) return false;
+      for (i = length; i-- !== 0;)
+        if (!equal(a[i], b[i])) return false;
+      return true;
+    }
+
+
+
+    if (a.constructor === RegExp) return a.source === b.source && a.flags === b.flags;
+    if (a.valueOf !== Object.prototype.valueOf) return a.valueOf() === b.valueOf();
+    if (a.toString !== Object.prototype.toString) return a.toString() === b.toString();
+
+    keys = Object.keys(a);
+    length = keys.length;
+    if (length !== Object.keys(b).length) return false;
+
+    for (i = length; i-- !== 0;)
+      if (!Object.prototype.hasOwnProperty.call(b, keys[i])) return false;
+
+    for (i = length; i-- !== 0;) {
+      var key = keys[i];
+
+      if (key === '_owner' && a.$$typeof) {
+        // React-specific: avoid traversing React elements' _owner.
+        //  _owner contains circular references
+        // and is not needed when comparing the actual elements (and not their owners)
+        continue;
+      }
+
+      if (!equal(a[key], b[key])) return false;
+    }
+
+    return true;
+  }
+
+  // true if both NaN, false otherwise
+  return a!==a && b!==b;
+};