source: trip-planner-front/node_modules/lodash/findIndex.js@ 84d0fbb

Last change on this file since 84d0fbb was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1var baseFindIndex = require('./_baseFindIndex'),
2 baseIteratee = require('./_baseIteratee'),
3 toInteger = require('./toInteger');
4
5/* Built-in method references for those with the same name as other `lodash` methods. */
6var nativeMax = Math.max;
7
8/**
9 * This method is like `_.find` except that it returns the index of the first
10 * element `predicate` returns truthy for instead of the element itself.
11 *
12 * @static
13 * @memberOf _
14 * @since 1.1.0
15 * @category Array
16 * @param {Array} array The array to inspect.
17 * @param {Function} [predicate=_.identity] The function invoked per iteration.
18 * @param {number} [fromIndex=0] The index to search from.
19 * @returns {number} Returns the index of the found element, else `-1`.
20 * @example
21 *
22 * var users = [
23 * { 'user': 'barney', 'active': false },
24 * { 'user': 'fred', 'active': false },
25 * { 'user': 'pebbles', 'active': true }
26 * ];
27 *
28 * _.findIndex(users, function(o) { return o.user == 'barney'; });
29 * // => 0
30 *
31 * // The `_.matches` iteratee shorthand.
32 * _.findIndex(users, { 'user': 'fred', 'active': false });
33 * // => 1
34 *
35 * // The `_.matchesProperty` iteratee shorthand.
36 * _.findIndex(users, ['active', false]);
37 * // => 0
38 *
39 * // The `_.property` iteratee shorthand.
40 * _.findIndex(users, 'active');
41 * // => 2
42 */
43function findIndex(array, predicate, fromIndex) {
44 var length = array == null ? 0 : array.length;
45 if (!length) {
46 return -1;
47 }
48 var index = fromIndex == null ? 0 : toInteger(fromIndex);
49 if (index < 0) {
50 index = nativeMax(length + index, 0);
51 }
52 return baseFindIndex(array, baseIteratee(predicate, 3), index);
53}
54
55module.exports = findIndex;
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