1 | import copyObject from './_copyObject.js';
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2 | import createAssigner from './_createAssigner.js';
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3 | import keys from './keys.js';
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4 |
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5 | /**
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6 | * This method is like `_.assign` except that it accepts `customizer`
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7 | * which is invoked to produce the assigned values. If `customizer` returns
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8 | * `undefined`, assignment is handled by the method instead. The `customizer`
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9 | * is invoked with five arguments: (objValue, srcValue, key, object, source).
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10 | *
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11 | * **Note:** This method mutates `object`.
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12 | *
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13 | * @static
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14 | * @memberOf _
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15 | * @since 4.0.0
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16 | * @category Object
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17 | * @param {Object} object The destination object.
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18 | * @param {...Object} sources The source objects.
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19 | * @param {Function} [customizer] The function to customize assigned values.
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20 | * @returns {Object} Returns `object`.
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21 | * @see _.assignInWith
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22 | * @example
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23 | *
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24 | * function customizer(objValue, srcValue) {
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25 | * return _.isUndefined(objValue) ? srcValue : objValue;
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26 | * }
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27 | *
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28 | * var defaults = _.partialRight(_.assignWith, customizer);
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29 | *
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30 | * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
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31 | * // => { 'a': 1, 'b': 2 }
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32 | */
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33 | var assignWith = createAssigner(function(object, source, srcIndex, customizer) {
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34 | copyObject(source, keys(source), object, customizer);
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35 | });
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36 |
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37 | export default assignWith;
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