| 'use strict'; |
| |
| Object.defineProperty(exports, "__esModule", { |
| value: true |
| }); |
| |
| var _onlyOnce = require('./internal/onlyOnce'); |
| |
| var _onlyOnce2 = _interopRequireDefault(_onlyOnce); |
| |
| var _wrapAsync = require('./internal/wrapAsync'); |
| |
| var _wrapAsync2 = _interopRequireDefault(_wrapAsync); |
| |
| var _awaitify = require('./internal/awaitify'); |
| |
| var _awaitify2 = _interopRequireDefault(_awaitify); |
| |
| function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } |
| |
| /** |
| * The post-check version of [`whilst`]{@link module:ControlFlow.whilst}. To reflect the difference in |
| * the order of operations, the arguments `test` and `iteratee` are switched. |
| * |
| * `doWhilst` is to `whilst` as `do while` is to `while` in plain JavaScript. |
| * |
| * @name doWhilst |
| * @static |
| * @memberOf module:ControlFlow |
| * @method |
| * @see [async.whilst]{@link module:ControlFlow.whilst} |
| * @category Control Flow |
| * @param {AsyncFunction} iteratee - A function which is called each time `test` |
| * passes. Invoked with (callback). |
| * @param {AsyncFunction} test - asynchronous truth test to perform after each |
| * execution of `iteratee`. Invoked with (...args, callback), where `...args` are the |
| * non-error args from the previous callback of `iteratee`. |
| * @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 {Promise} a promise, if no callback is passed |
| */ |
| function doWhilst(iteratee, test, callback) { |
| callback = (0, _onlyOnce2.default)(callback); |
| var _fn = (0, _wrapAsync2.default)(iteratee); |
| var _test = (0, _wrapAsync2.default)(test); |
| var results; |
| |
| function next(err, ...args) { |
| if (err) return callback(err); |
| if (err === false) return; |
| results = args; |
| _test(...args, check); |
| } |
| |
| function check(err, truth) { |
| if (err) return callback(err); |
| if (err === false) return; |
| if (!truth) return callback(null, ...results); |
| _fn(next); |
| } |
| |
| return check(null, true); |
| } |
| |
| exports.default = (0, _awaitify2.default)(doWhilst, 3); |
| module.exports = exports['default']; |