Revert "Feature/fast deep equal@2.0.1 (#21)"

This reverts commit 8122fed.
FormidableLabs · Jun 4, 2018 · fdf9137 · fdf9137
1 parent 8122fed
commit fdf9137
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Showing 3 changed files with 344 additions and 420 deletions.
diff --git a/index.js b/index.js
@@ -5,48 +5,45 @@ var keyList = Object.keys;
 var hasProp = Object.prototype.hasOwnProperty;
 
 function equal(a, b) {
-  // fast-deep-equal index.js 2.0.1
   if (a === b) return true;
 
-  if (a && b && typeof a == 'object' && typeof b == 'object') {
-    var arrA = isArray(a)
-      , arrB = isArray(b)
-      , i
-      , length
-      , key;
+  var arrA = isArray(a)
+    , arrB = isArray(b)
+    , i
+    , length
+    , key;
 
-    if (arrA && arrB) {
-      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 (arrA && arrB) {
+    length = a.length;
+    if (length != b.length) return false;
+    for (i = 0; i < length; i++)
+      if (!equal(a[i], b[i])) return false;
+    return true;
+  }
 
-    if (arrA != arrB) return false;
+  if (arrA != arrB) return false;
 
-    var dateA = a instanceof Date
-      , dateB = b instanceof Date;
-    if (dateA != dateB) return false;
-    if (dateA && dateB) return a.getTime() == b.getTime();
+  var dateA = a instanceof Date
+    , dateB = b instanceof Date;
+  if (dateA != dateB) return false;
+  if (dateA && dateB) return a.getTime() == b.getTime();
 
-    var regexpA = a instanceof RegExp
-      , regexpB = b instanceof RegExp;
-    if (regexpA != regexpB) return false;
-    if (regexpA && regexpB) return a.toString() == b.toString();
+  var regexpA = a instanceof RegExp
+    , regexpB = b instanceof RegExp;
+  if (regexpA != regexpB) return false;
+  if (regexpA && regexpB) return a.toString() == b.toString();
 
+  if (a instanceof Object && b instanceof Object) {
     var keys = keyList(a);
     length = keys.length;
 
     if (length !== keyList(b).length)
       return false;
 
-    for (i = length; i-- !== 0;)
+    for (i = 0; i < length; i++)
       if (!hasProp.call(b, keys[i])) return false;
-    // end fast-deep-equal
 
-    // Custom handling for React
-    for (i = length; i-- !== 0;) {
+    for (i = 0; i < length; i++) {
       key = keys[i];
       if (key === '_owner' && a.$$typeof && a._store) {
         // React-specific: avoid traversing React elements' _owner.
@@ -60,13 +57,11 @@ function equal(a, b) {
       }
     }
 
-    // fast-deep-equal index.js 2.0.1
     return true;
   }
 
-  return a!==a && b!==b;
+  return false;
 }
-// end fast-deep-equal
 
 module.exports = function exportedEqual(a, b) {
   try {