Current File : //usr/lib/node_modules/pm2/node_modules/async/doWhilst.js
'use strict';
Object.defineProperty(exports, "__esModule", {
value: true
});
var _onlyOnce = require('./internal/onlyOnce.js');
var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
var _wrapAsync = require('./internal/wrapAsync.js');
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
var _awaitify = require('./internal/awaitify.js');
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'];
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