| 1 | import copyObject from './_copyObject.js';
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| 2 | import createAssigner from './_createAssigner.js';
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| 3 | import keysIn from './keysIn.js';
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| 4 |
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| 5 | /**
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| 6 | * This method is like `_.assignIn` 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 | * @alias extendWith
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| 17 | * @category Object
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| 18 | * @param {Object} object The destination object.
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| 19 | * @param {...Object} sources The source objects.
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| 20 | * @param {Function} [customizer] The function to customize assigned values.
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| 21 | * @returns {Object} Returns `object`.
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| 22 | * @see _.assignWith
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| 23 | * @example
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| 24 | *
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| 25 | * function customizer(objValue, srcValue) {
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| 26 | * return _.isUndefined(objValue) ? srcValue : objValue;
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| 27 | * }
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| 28 | *
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| 29 | * var defaults = _.partialRight(_.assignInWith, customizer);
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| 30 | *
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| 31 | * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
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| 32 | * // => { 'a': 1, 'b': 2 }
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| 33 | */
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| 34 | var assignInWith = createAssigner(function(object, source, srcIndex, customizer) {
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| 35 | copyObject(source, keysIn(source), object, customizer);
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| 36 | });
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| 37 |
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| 38 | export default assignInWith;
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