You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
54 lines
1.7 KiB
54 lines
1.7 KiB
2 years ago
|
import baseIndexOf from './_baseIndexOf.js';
|
||
|
|
import isArrayLike from './isArrayLike.js';
|
||
|
|
import isString from './isString.js';
|
||
|
|
import toInteger from './toInteger.js';
|
||
|
|
import values from './values.js';
|
||
|
|
|
||
|
|
/* Built-in method references for those with the same name as other `lodash` methods. */
|
||
|
|
var nativeMax = Math.max;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Checks if `value` is in `collection`. If `collection` is a string, it's
|
||
|
|
* checked for a substring of `value`, otherwise
|
||
|
|
* [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
|
||
|
|
* is used for equality comparisons. If `fromIndex` is negative, it's used as
|
||
|
|
* the offset from the end of `collection`.
|
||
|
|
*
|
||
|
|
* @static
|
||
|
|
* @memberOf _
|
||
|
|
* @since 0.1.0
|
||
|
|
* @category Collection
|
||
|
|
* @param {Array|Object|string} collection The collection to inspect.
|
||
|
|
* @param {*} value The value to search for.
|
||
|
|
* @param {number} [fromIndex=0] The index to search from.
|
||
|
|
* @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
|
||
|
|
* @returns {boolean} Returns `true` if `value` is found, else `false`.
|
||
|
|
* @example
|
||
|
|
*
|
||
|
|
* _.includes([1, 2, 3], 1);
|
||
|
|
* // => true
|
||
|
|
*
|
||
|
|
* _.includes([1, 2, 3], 1, 2);
|
||
|
|
* // => false
|
||
|
|
*
|
||
|
|
* _.includes({ 'a': 1, 'b': 2 }, 1);
|
||
|
|
* // => true
|
||
|
|
*
|
||
|
|
* _.includes('abcd', 'bc');
|
||
|
|
* // => true
|
||
|
|
*/
|
||
|
|
function includes(collection, value, fromIndex, guard) {
|
||
|
|
collection = isArrayLike(collection) ? collection : values(collection);
|
||
|
|
fromIndex = (fromIndex && !guard) ? toInteger(fromIndex) : 0;
|
||
|
|
|
||
|
|
var length = collection.length;
|
||
|
|
if (fromIndex < 0) {
|
||
|
|
fromIndex = nativeMax(length + fromIndex, 0);
|
||
|
|
}
|
||
|
|
return isString(collection)
|
||
|
|
? (fromIndex <= length && collection.indexOf(value, fromIndex) > -1)
|
||
|
|
: (!!length && baseIndexOf(collection, value, fromIndex) > -1);
|
||
|
|
}
|
||
|
|
|
||
|
|
export default includes;
|