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							- import assignValue from './_assignValue.js';
 
- import baseAssignValue from './_baseAssignValue.js';
 
- /**
 
-  * Copies properties of `source` to `object`.
 
-  *
 
-  * @private
 
-  * @param {Object} source The object to copy properties from.
 
-  * @param {Array} props The property identifiers to copy.
 
-  * @param {Object} [object={}] The object to copy properties to.
 
-  * @param {Function} [customizer] The function to customize copied values.
 
-  * @returns {Object} Returns `object`.
 
-  */
 
- function copyObject(source, props, object, customizer) {
 
-   var isNew = !object;
 
-   object || (object = {});
 
-   var index = -1,
 
-       length = props.length;
 
-   while (++index < length) {
 
-     var key = props[index];
 
-     var newValue = customizer
 
-       ? customizer(object[key], source[key], key, object, source)
 
-       : undefined;
 
-     if (newValue === undefined) {
 
-       newValue = source[key];
 
-     }
 
-     if (isNew) {
 
-       baseAssignValue(object, key, newValue);
 
-     } else {
 
-       assignValue(object, key, newValue);
 
-     }
 
-   }
 
-   return object;
 
- }
 
- export default copyObject;
 
 
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