update.ts

import { update } from '../typings/types';
import adjust from './adjust';
import curryN from '../function/curryN';
import always from '../function/always';

/**
 * Returns a new copy of the array with the element at the provided index
 * replaced with the given value.
 *
 * @param {Number} idx index
 * @param {*} x The value to exist at the given index of the returned array.
 * @param {Array} list The source array to be updated.
 * @return {Array} A copy of `list` with the value at index `idx` replaced with `x`.
 * @example
 *
 *      update(1, 11, [0, 1, 2]);     //=> [0, 11, 2]
 *      update(1)(11)([0, 1, 2]);     //=> [0, 11, 2]
 */

export default curryN(3, (idx, x, list) => (
    adjust(always(x), idx, list)
)) as typeof update