fix issue with vfs worker not passing falsy values

node_modules/vfs-socket/worker.js

@@ -437,7 +437,7 @@ function Worker(vfs) {
         var keys = Object.keys(meta || {});
         for (var i = 0, l = keys.length; i < l; i++) {
             var key = keys[i];
-            if (!meta[key])
+            if (meta[key] == undefined)
                 continue;
             switch (key) {
                 case "stream": token.stream = storeStream(meta.stream); break;