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					47 lines
				
				979 B
			
		
		
			
		
	
	
					47 lines
				
				979 B
			| 
											3 years ago
										 | //
 | ||
|  | 
 | ||
|  | 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; | ||
|  | }; |