ramda-adjunct/lib/move.js

Ramda Adjunct is the most popular and most comprehensive set of utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.

"use strict";

exports.__esModule = true;
exports["default"] = void 0;

var _ramda = require("ramda");

/**
 * Returns a new list with the item at the position `fromIdx` moved to the position `toIdx`. If the
 * `toIdx` is out of the `list` range, the item will be placed at the last position of the `list`.
 * When negative indices are provided, the behavior of the move is unspecified.
 *
 * @func move
 * @memberOf RA
 * @since {@link https://char0n.github.io/ramda-adjunct/2.8.0|v2.8.0}
 * @category List
 * @sig Number -> Number -> [a] -> [a]
 * @param {Number} fromIdx The position of item to be moved
 * @param {Number} toIdx The position of item after move
 * @param {Array} list The list containing the item to be moved
 * @return {Array}
 * @example
 *
 * const list = ['a', 'b', 'c', 'd', 'e'];
 * RA.move(1, 3, list) //=> ['a', 'c', 'd', 'b', 'e']
 */
var move = (0, _ramda.curry)(function (fromIdx, toIdx, list) {
  return (0, _ramda.compose)((0, _ramda.insert)(toIdx, (0, _ramda.nth)(fromIdx, list)), (0, _ramda.remove)(fromIdx, 1))(list);
});
var _default = move;
exports["default"] = _default;