1 | var baseFindKey = require('./_baseFindKey'),
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2 | baseForOwnRight = require('./_baseForOwnRight'),
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3 | baseIteratee = require('./_baseIteratee');
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4 |
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5 | /**
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6 | * This method is like `_.findKey` except that it iterates over elements of
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7 | * a collection in the opposite order.
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8 | *
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9 | * @static
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10 | * @memberOf _
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11 | * @since 2.0.0
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12 | * @category Object
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13 | * @param {Object} object The object to inspect.
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14 | * @param {Function} [predicate=_.identity] The function invoked per iteration.
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15 | * @returns {string|undefined} Returns the key of the matched element,
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16 | * else `undefined`.
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17 | * @example
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18 | *
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19 | * var users = {
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20 | * 'barney': { 'age': 36, 'active': true },
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21 | * 'fred': { 'age': 40, 'active': false },
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22 | * 'pebbles': { 'age': 1, 'active': true }
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23 | * };
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24 | *
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25 | * _.findLastKey(users, function(o) { return o.age < 40; });
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26 | * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
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27 | *
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28 | * // The `_.matches` iteratee shorthand.
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29 | * _.findLastKey(users, { 'age': 36, 'active': true });
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30 | * // => 'barney'
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31 | *
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32 | * // The `_.matchesProperty` iteratee shorthand.
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33 | * _.findLastKey(users, ['active', false]);
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34 | * // => 'fred'
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35 | *
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36 | * // The `_.property` iteratee shorthand.
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37 | * _.findLastKey(users, 'active');
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38 | * // => 'pebbles'
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39 | */
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40 | function findLastKey(object, predicate) {
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41 | return baseFindKey(object, baseIteratee(predicate, 3), baseForOwnRight);
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42 | }
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43 |
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44 | module.exports = findLastKey;
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