'use strict';
  
  Object.defineProperty(exports, "__esModule", {
      value: true
  });
  exports.default = whilst;
  
  var _noop = require('lodash/noop');
  
  var _noop2 = _interopRequireDefault(_noop);
  
  var _slice = require('./internal/slice');
  
  var _slice2 = _interopRequireDefault(_slice);
  
  var _onlyOnce = require('./internal/onlyOnce');
  
  var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
  
  var _wrapAsync = require('./internal/wrapAsync');
  
  var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  /**
   * Repeatedly call `iteratee`, while `test` returns `true`. Calls `callback` when
   * stopped, or an error occurs.
   *
   * @name whilst
   * @static
   * @memberOf module:ControlFlow
   * @method
   * @category Control Flow
   * @param {Function} test - synchronous truth test to perform before each
   * execution of `iteratee`. Invoked with ().
   * @param {AsyncFunction} iteratee - An async function which is called each time
   * `test` passes. Invoked with (callback).
   * @param {Function} [callback] - A callback which is called after the test
   * function has failed and repeated execution of `iteratee` has stopped. `callback`
   * will be passed an error and any arguments passed to the final `iteratee`'s
   * callback. Invoked with (err, [results]);
   * @returns undefined
   * @example
   *
   * var count = 0;
   * async.whilst(
   *     function() { return count < 5; },
   *     function(callback) {
   *         count++;
   *         setTimeout(function() {
   *             callback(null, count);
   *         }, 1000);
   *     },
   *     function (err, n) {
   *         // 5 seconds have passed, n = 5
   *     }
   * );
   */
  function whilst(test, iteratee, callback) {
      callback = (0, _onlyOnce2.default)(callback || _noop2.default);
      var _iteratee = (0, _wrapAsync2.default)(iteratee);
      if (!test()) return callback(null);
      var next = function (err /*, ...args*/) {
          if (err) return callback(err);
          if (test()) return _iteratee(next);
          var args = (0, _slice2.default)(arguments, 1);
          callback.apply(null, [null].concat(args));
      };
      _iteratee(next);
  }
  module.exports = exports['default'];