12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- //
- 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;
- };
|