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						- var copyObject = require('./_copyObject'),
 -     createAssigner = require('./_createAssigner'),
 -     keys = require('./keys');
 - 
 - /**
 -  * This method is like `_.assign` except that it accepts `customizer`
 -  * which is invoked to produce the assigned values. If `customizer` returns
 -  * `undefined`, assignment is handled by the method instead. The `customizer`
 -  * is invoked with five arguments: (objValue, srcValue, key, object, source).
 -  *
 -  * **Note:** This method mutates `object`.
 -  *
 -  * @static
 -  * @memberOf _
 -  * @since 4.0.0
 -  * @category Object
 -  * @param {Object} object The destination object.
 -  * @param {...Object} sources The source objects.
 -  * @param {Function} [customizer] The function to customize assigned values.
 -  * @returns {Object} Returns `object`.
 -  * @see _.assignInWith
 -  * @example
 -  *
 -  * function customizer(objValue, srcValue) {
 -  *   return _.isUndefined(objValue) ? srcValue : objValue;
 -  * }
 -  *
 -  * var defaults = _.partialRight(_.assignWith, customizer);
 -  *
 -  * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
 -  * // => { 'a': 1, 'b': 2 }
 -  */
 - var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
 -   copyObject(source, keys(source), object, customizer);
 - });
 - 
 - module.exports = assignWith;
 
 
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