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

/** Error message constants. */ var FUNC_ERROR_TEXT = 'Expected a function';

/**

* The opposite of `_.before`; this method creates a function that invokes
* `func` once it's called `n` or more times.
*
* @static
* @memberOf _
* @since 0.1.0
* @category Function
* @param {number} n The number of calls before `func` is invoked.
* @param {Function} func The function to restrict.
* @returns {Function} Returns the new restricted function.
* @example
*
* var saves = ['profile', 'settings'];
*
* var done = _.after(saves.length, function() {
*   console.log('done saving!');
* });
*
* _.forEach(saves, function(type) {
*   asyncSave({ 'type': type, 'complete': done });
* });
* // => Logs 'done saving!' after the two async saves have completed.
*/

function after(n, func) {

if (typeof func != 'function') {
  throw new TypeError(FUNC_ERROR_TEXT);
}
n = toInteger(n);
return function() {
  if (--n < 1) {
    return func.apply(this, arguments);
  }
};

}

module.exports = after;