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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; | |