You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
61 lines
2.0 KiB
JavaScript
61 lines
2.0 KiB
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.default = until;
|
|
|
|
var _whilst = require('./whilst.js');
|
|
|
|
var _whilst2 = _interopRequireDefault(_whilst);
|
|
|
|
var _wrapAsync = require('./internal/wrapAsync.js');
|
|
|
|
var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
|
|
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
|
|
|
/**
|
|
* Repeatedly call `iteratee` until `test` returns `true`. Calls `callback` when
|
|
* stopped, or an error occurs. `callback` will be passed an error and any
|
|
* arguments passed to the final `iteratee`'s callback.
|
|
*
|
|
* The inverse of [whilst]{@link module:ControlFlow.whilst}.
|
|
*
|
|
* @name until
|
|
* @static
|
|
* @memberOf module:ControlFlow
|
|
* @method
|
|
* @see [async.whilst]{@link module:ControlFlow.whilst}
|
|
* @category Control Flow
|
|
* @param {AsyncFunction} test - asynchronous truth test to perform before each
|
|
* execution of `iteratee`. Invoked with (callback).
|
|
* @param {AsyncFunction} iteratee - An async function which is called each time
|
|
* `test` fails. Invoked with (callback).
|
|
* @param {Function} [callback] - A callback which is called after the test
|
|
* function has passed 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 a callback is not passed
|
|
*
|
|
* @example
|
|
* const results = []
|
|
* let finished = false
|
|
* async.until(function test(cb) {
|
|
* cb(null, finished)
|
|
* }, function iter(next) {
|
|
* fetchPage(url, (err, body) => {
|
|
* if (err) return next(err)
|
|
* results = results.concat(body.objects)
|
|
* finished = !!body.next
|
|
* next(err)
|
|
* })
|
|
* }, function done (err) {
|
|
* // all pages have been fetched
|
|
* })
|
|
*/
|
|
function until(test, iteratee, callback) {
|
|
const _test = (0, _wrapAsync2.default)(test);
|
|
return (0, _whilst2.default)(cb => _test((err, truth) => cb(err, !truth)), iteratee, callback);
|
|
}
|
|
module.exports = exports['default']; |