UNPKG

900 BJavaScriptView Raw
1import _curry2 from "./internal/_curry2.js";
2import _indexOf from "./internal/_indexOf.js";
3import _isArray from "./internal/_isArray.js";
4/**
5 * Returns the position of the first occurrence of an item in an array, or -1
6 * if the item is not included in the array. [`R.equals`](#equals) is used to
7 * determine equality.
8 *
9 * @func
10 * @memberOf R
11 * @since v0.1.0
12 * @category List
13 * @sig a -> [a] -> Number
14 * @param {*} target The item to find.
15 * @param {Array} xs The array to search in.
16 * @return {Number} the index of the target, or -1 if the target is not found.
17 * @see R.lastIndexOf
18 * @example
19 *
20 * R.indexOf(3, [1,2,3,4]); //=> 2
21 * R.indexOf(10, [1,2,3,4]); //=> -1
22 */
23
24var indexOf =
25/*#__PURE__*/
26_curry2(function indexOf(target, xs) {
27 return typeof xs.indexOf === 'function' && !_isArray(xs) ? xs.indexOf(target) : _indexOf(xs, target, 0);
28});
29
30export default indexOf;
\No newline at end of file