up n_m

node_modules/shallowequal/index.js

@@ -0,0 +1,46 @@
+//
+
+module.exports = function shallowEqual(objA, objB, compare, compareContext) {
+  var ret = compare ? compare.call(compareContext, objA, objB) : void 0;
+
+  if (ret !== void 0) {
+    return !!ret;
+  }
+
+  if (objA === objB) {
+    return true;
+  }
+
+  if (typeof objA !== "object" || !objA || typeof objB !== "object" || !objB) {
+    return false;
+  }
+
+  var keysA = Object.keys(objA);
+  var keysB = Object.keys(objB);
+
+  if (keysA.length !== keysB.length) {
+    return false;
+  }
+
+  var bHasOwnProperty = Object.prototype.hasOwnProperty.bind(objB);
+
+  // Test for A's keys different from B.
+  for (var idx = 0; idx < keysA.length; idx++) {
+    var key = keysA[idx];
+
+    if (!bHasOwnProperty(key)) {
+      return false;
+    }
+
+    var valueA = objA[key];
+    var valueB = objB[key];
+
+    ret = compare ? compare.call(compareContext, valueA, valueB, key) : void 0;
+
+    if (ret === false || (ret === void 0 && valueA !== valueB)) {
+      return false;
+    }
+  }
+
+  return true;
+};