var toInteger = require('./toInteger');

/**
 * Creates a function that returns its nth argument.
 *
 * @static
 * @memberOf _
 * @category Util
 * @param {number} [n=0] The index of the argument to return.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var func = _.nthArg(1);
 *
 * func('a', 'b', 'c');
 * // => 'b'
 */
function nthArg(n) {
  n = toInteger(n);
  return function() {
    return arguments[n];
  };
}

module.exports = nthArg;