1 | ;
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 |
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7 | var _onlyOnce = require('./internal/onlyOnce');
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8 |
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9 | var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
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10 |
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11 | var _wrapAsync = require('./internal/wrapAsync');
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12 |
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13 | var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
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14 |
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15 | var _awaitify = require('./internal/awaitify');
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16 |
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17 | var _awaitify2 = _interopRequireDefault(_awaitify);
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18 |
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19 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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20 |
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21 | /**
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22 | * The post-check version of [`whilst`]{@link module:ControlFlow.whilst}. To reflect the difference in
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23 | * the order of operations, the arguments `test` and `iteratee` are switched.
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24 | *
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25 | * `doWhilst` is to `whilst` as `do while` is to `while` in plain JavaScript.
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26 | *
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27 | * @name doWhilst
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28 | * @static
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29 | * @memberOf module:ControlFlow
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30 | * @method
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31 | * @see [async.whilst]{@link module:ControlFlow.whilst}
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32 | * @category Control Flow
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33 | * @param {AsyncFunction} iteratee - A function which is called each time `test`
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34 | * passes. Invoked with (callback).
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35 | * @param {AsyncFunction} test - asynchronous truth test to perform after each
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36 | * execution of `iteratee`. Invoked with (...args, callback), where `...args` are the
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37 | * non-error args from the previous callback of `iteratee`.
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38 | * @param {Function} [callback] - A callback which is called after the test
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39 | * function has failed and repeated execution of `iteratee` has stopped.
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40 | * `callback` will be passed an error and any arguments passed to the final
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41 | * `iteratee`'s callback. Invoked with (err, [results]);
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42 | * @returns {Promise} a promise, if no callback is passed
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43 | */
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44 | function doWhilst(iteratee, test, callback) {
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45 | callback = (0, _onlyOnce2.default)(callback);
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46 | var _fn = (0, _wrapAsync2.default)(iteratee);
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47 | var _test = (0, _wrapAsync2.default)(test);
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48 | var results;
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49 |
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50 | function next(err, ...args) {
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51 | if (err) return callback(err);
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52 | if (err === false) return;
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53 | results = args;
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54 | _test(...args, check);
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55 | }
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56 |
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57 | function check(err, truth) {
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58 | if (err) return callback(err);
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59 | if (err === false) return;
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60 | if (!truth) return callback(null, ...results);
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61 | _fn(next);
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62 | }
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63 |
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64 | return check(null, true);
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65 | }
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66 |
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67 | exports.default = (0, _awaitify2.default)(doWhilst, 3);
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68 | module.exports = exports['default']; |
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