Function whilst

lib/whilst.js:41–51

(test, iteratee, callback)

 * );
 */
export default function whilst(test, iteratee, callback) {
    callback = onlyOnce(callback || noop);
    var _iteratee = wrapAsync(iteratee);
    if (!test()) return callback(null);
    var next = rest(function(err, args) {
        if (err) return callback(err);
        if (test()) return _iteratee(next);
        callback.apply(null, [null].concat(args));
    });
    _iteratee(next);
}