promiseWhile()

promiseWhile.js

function promiseWhile (condition, execute) {
    return new Promise(function(resolve, reject) {
        var iterate = function () {
            if (condition()) {
                return execute()
                    .then(iterate)
                    .catch(reject);
            }
            return resolve();
        };
        return iterate();
    });
}

module.exports = promiseWhile;