60 lines
2.0 KiB
JavaScript
60 lines
2.0 KiB
JavaScript
'use strict';
|
|
|
|
Object.defineProperty(exports, "__esModule", {
|
|
value: true
|
|
});
|
|
exports.default = doDuring;
|
|
|
|
var _noop = require('lodash/noop');
|
|
|
|
var _noop2 = _interopRequireDefault(_noop);
|
|
|
|
var _rest = require('lodash/rest');
|
|
|
|
var _rest2 = _interopRequireDefault(_rest);
|
|
|
|
var _onlyOnce = require('./internal/onlyOnce');
|
|
|
|
var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
|
|
|
|
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
|
|
|
|
/**
|
|
* The post-check version of [`during`]{@link module:ControlFlow.during}. To reflect the difference in
|
|
* the order of operations, the arguments `test` and `fn` are switched.
|
|
*
|
|
* Also a version of [`doWhilst`]{@link module:ControlFlow.doWhilst} with asynchronous `test` function.
|
|
* @name doDuring
|
|
* @static
|
|
* @memberOf module:ControlFlow
|
|
* @method
|
|
* @see [async.during]{@link module:ControlFlow.during}
|
|
* @category Control Flow
|
|
* @param {Function} fn - A function which is called each time `test` passes.
|
|
* The function is passed a `callback(err)`, which must be called once it has
|
|
* completed with an optional `err` argument. Invoked with (callback).
|
|
* @param {Function} test - asynchronous truth test to perform before each
|
|
* execution of `fn`. Invoked with (...args, callback), where `...args` are the
|
|
* non-error args from the previous callback of `fn`.
|
|
* @param {Function} [callback] - A callback which is called after the test
|
|
* function has failed and repeated execution of `fn` has stopped. `callback`
|
|
* will be passed an error if one occured, otherwise `null`.
|
|
*/
|
|
function doDuring(fn, test, callback) {
|
|
callback = (0, _onlyOnce2.default)(callback || _noop2.default);
|
|
|
|
var next = (0, _rest2.default)(function (err, args) {
|
|
if (err) return callback(err);
|
|
args.push(check);
|
|
test.apply(this, args);
|
|
});
|
|
|
|
function check(err, truth) {
|
|
if (err) return callback(err);
|
|
if (!truth) return callback(null);
|
|
fn(next);
|
|
}
|
|
|
|
check(null, true);
|
|
}
|
|
module.exports = exports['default']; |