source: trip-planner-front/node_modules/lodash/includes.js@ 6fe77af

Last change on this file since 6fe77af was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

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1var baseIndexOf = require('./_baseIndexOf'),
2 isArrayLike = require('./isArrayLike'),
3 isString = require('./isString'),
4 toInteger = require('./toInteger'),
5 values = require('./values');
6
7/* Built-in method references for those with the same name as other `lodash` methods. */
8var nativeMax = Math.max;
9
10/**
11 * Checks if `value` is in `collection`. If `collection` is a string, it's
12 * checked for a substring of `value`, otherwise
13 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
14 * is used for equality comparisons. If `fromIndex` is negative, it's used as
15 * the offset from the end of `collection`.
16 *
17 * @static
18 * @memberOf _
19 * @since 0.1.0
20 * @category Collection
21 * @param {Array|Object|string} collection The collection to inspect.
22 * @param {*} value The value to search for.
23 * @param {number} [fromIndex=0] The index to search from.
24 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
25 * @returns {boolean} Returns `true` if `value` is found, else `false`.
26 * @example
27 *
28 * _.includes([1, 2, 3], 1);
29 * // => true
30 *
31 * _.includes([1, 2, 3], 1, 2);
32 * // => false
33 *
34 * _.includes({ 'a': 1, 'b': 2 }, 1);
35 * // => true
36 *
37 * _.includes('abcd', 'bc');
38 * // => true
39 */
40function includes(collection, value, fromIndex, guard) {
41 collection = isArrayLike(collection) ? collection : values(collection);
42 fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;
43
44 var length = collection.length;
45 if (fromIndex < 0) {
46 fromIndex = nativeMax(length + fromIndex, 0);
47 }
48 return isString(collection)
49 ? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
50 : (!!length && baseIndexOf(collection, value, fromIndex) > -1);
51}
52
53module.exports = includes;
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