[d565449] | 1 | import baseFindIndex from './_baseFindIndex.js';
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| 2 | import baseIteratee from './_baseIteratee.js';
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| 3 | import toInteger from './toInteger.js';
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| 4 |
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| 5 | /* Built-in method references for those with the same name as other `lodash` methods. */
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| 6 | var nativeMax = Math.max,
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| 7 | nativeMin = Math.min;
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| 8 |
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| 9 | /**
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| 10 | * This method is like `_.findIndex` except that it iterates over elements
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| 11 | * of `collection` from right to left.
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| 12 | *
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| 13 | * @static
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| 14 | * @memberOf _
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| 15 | * @since 2.0.0
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| 16 | * @category Array
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| 17 | * @param {Array} array The array to inspect.
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| 18 | * @param {Function} [predicate=_.identity] The function invoked per iteration.
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| 19 | * @param {number} [fromIndex=array.length-1] The index to search from.
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| 20 | * @returns {number} Returns the index of the found element, else `-1`.
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| 21 | * @example
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| 22 | *
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| 23 | * var users = [
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| 24 | * { 'user': 'barney', 'active': true },
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| 25 | * { 'user': 'fred', 'active': false },
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| 26 | * { 'user': 'pebbles', 'active': false }
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| 27 | * ];
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| 28 | *
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| 29 | * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
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| 30 | * // => 2
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| 31 | *
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| 32 | * // The `_.matches` iteratee shorthand.
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| 33 | * _.findLastIndex(users, { 'user': 'barney', 'active': true });
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| 34 | * // => 0
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| 35 | *
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| 36 | * // The `_.matchesProperty` iteratee shorthand.
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| 37 | * _.findLastIndex(users, ['active', false]);
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| 38 | * // => 2
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| 39 | *
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| 40 | * // The `_.property` iteratee shorthand.
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| 41 | * _.findLastIndex(users, 'active');
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| 42 | * // => 0
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| 43 | */
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| 44 | function findLastIndex(array, predicate, fromIndex) {
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| 45 | var length = array == null ? 0 : array.length;
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| 46 | if (!length) {
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| 47 | return -1;
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| 48 | }
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| 49 | var index = length - 1;
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| 50 | if (fromIndex !== undefined) {
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| 51 | index = toInteger(fromIndex);
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| 52 | index = fromIndex < 0
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| 53 | ? nativeMax(length + index, 0)
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| 54 | : nativeMin(index, length - 1);
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| 55 | }
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| 56 | return baseFindIndex(array, baseIteratee(predicate, 3), index, true);
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| 57 | }
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| 58 |
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| 59 | export default findLastIndex;
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