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1 | var baseUpdate = require('./_baseUpdate'),
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2 | castFunction = require('./_castFunction');
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3 |
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4 | /**
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5 | * This method is like `_.set` except that accepts `updater` to produce the
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6 | * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
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7 | * is invoked with one argument: (value).
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8 | *
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9 | * **Note:** This method mutates `object`.
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10 | *
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11 | * @static
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12 | * @memberOf _
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13 | * @since 4.6.0
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14 | * @category Object
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15 | * @param {Object} object The object to modify.
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16 | * @param {Array|string} path The path of the property to set.
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17 | * @param {Function} updater The function to produce the updated value.
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18 | * @returns {Object} Returns `object`.
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19 | * @example
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20 | *
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21 | * var object = { 'a': [{ 'b': { 'c': 3 } }] };
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22 | *
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23 | * _.update(object, 'a[0].b.c', function(n) { return n * n; });
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24 | * console.log(object.a[0].b.c);
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25 | * // => 9
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26 | *
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27 | * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
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28 | * console.log(object.x[0].y.z);
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29 | * // => 0
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30 | */
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31 | function update(object, path, updater) {
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32 | return object == null ? object : baseUpdate(object, path, castFunction(updater));
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33 | }
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34 |
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35 | module.exports = update;
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