import _curry2 from "./internal/_curry2.js"; import _isArray from "./internal/_isArray.js"; import _isFunction from "./internal/_isFunction.js"; import _isString from "./internal/_isString.js"; import toString from "./toString.js"; /** * Returns the result of concatenating the given lists or strings. * * Note: `R.concat` expects both arguments to be of the same type, * unlike the native `Array.prototype.concat` method. It will throw * an error if you `concat` an Array with a non-Array value. * * Dispatches to the `concat` method of the first argument, if present. * Can also concatenate two members of a [fantasy-land * compatible semigroup](https://github.com/fantasyland/fantasy-land#semigroup). * * @func * @memberOf R * @since v0.1.0 * @category List * @sig [a] -> [a] -> [a] * @sig String -> String -> String * @param {Array|String} firstList The first list * @param {Array|String} secondList The second list * @return {Array|String} A list consisting of the elements of `firstList` followed by the elements of * `secondList`. * * @example * * R.concat('ABC', 'DEF'); // 'ABCDEF' * R.concat([4, 5, 6], [1, 2, 3]); //=> [4, 5, 6, 1, 2, 3] * R.concat([], []); //=> [] */ var concat = /*#__PURE__*/ _curry2(function concat(a, b) { if (_isArray(a)) { if (_isArray(b)) { return a.concat(b); } throw new TypeError(toString(b) + ' is not an array'); } if (_isString(a)) { if (_isString(b)) { return a + b; } throw new TypeError(toString(b) + ' is not a string'); } if (a != null && _isFunction(a['fantasy-land/concat'])) { return a['fantasy-land/concat'](b); } if (a != null && _isFunction(a.concat)) { return a.concat(b); } throw new TypeError(toString(a) + ' does not have a method named "concat" or "fantasy-land/concat"'); }); export default concat;