function shallowEqual(objA, objB) { if (objA === objB) { return true; } var keysA = Object.keys(objA); var keysB = Object.keys(objB); if (keysA.length !== keysB.length) { return false; } // Test for A's keys different from B. var hasOwn = Object.prototype.hasOwnProperty; for (var i = 0; i < keysA.length; i++) { if (!hasOwn.call(objB, keysA[i]) || objA[keysA[i]] !== objB[keysA[i]]) { return false; } } return true; }
