Fix for windows

lib/storage.js

@@ -51,6 +51,10 @@ storage.flushToStorage = function (options, callback) {
     flags = options.isDir ? 'r' : 'r+';
   }
 
+  // Windows can't fsync (FlushFileBuffers) directories. We can live with this as it cannot cause 100% dataloss
+  // except in the very rare event of the first time database is loaded and a crash happens
+  if (flags === 'r' && (process.platform === 'win32' || process.platform === 'win64')) { return callback(null); }
+
   fs.open(filename, flags, function (err, fd) {
     if (err) { return callback(err); }
     fs.fsync(fd, function (errFS) {