35 lines
1.1 KiB
JavaScript
35 lines
1.1 KiB
JavaScript
var baseUpdate = require('./_baseUpdate'),
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castFunction = require('./_castFunction');
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/**
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* This method is like `_.set` except that accepts `updater` to produce the
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* value to set. Use `_.updateWith` to customize `path` creation. The `updater`
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* is invoked with one argument: (value).
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*
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* **Note:** This method mutates `object`.
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*
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* @static
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* @memberOf _
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* @since 4.6.0
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* @category Object
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* @param {Object} object The object to modify.
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* @param {Array|string} path The path of the property to set.
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* @param {Function} updater The function to produce the updated value.
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* @returns {Object} Returns `object`.
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* @example
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*
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* var object = { 'a': [{ 'b': { 'c': 3 } }] };
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*
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* _.update(object, 'a[0].b.c', function(n) { return n * n; });
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* console.log(object.a[0].b.c);
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* // => 9
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*
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* _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
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* console.log(object.x[0].y.z);
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* // => 0
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*/
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function update(object, path, updater) {
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return object == null ? object : baseUpdate(object, path, castFunction(updater));
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}
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module.exports = update;
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