fn()

in index.js [275:287]


    fn(function _checkError(err) {
        if (err) {
            self.maybeIncrementStat('sevnup.retrying', {
                retrytype: retryName
            });
            setTimeout(
                self._withRetry.bind(self, retryName, fn, done),
                self.retryIntervalMs
            ).unref();
            return;
        }
        done.apply(done, arguments);
    });