catching errors

src/browser/lang.js

@@ -14,9 +14,12 @@ module.exports = function getLanguageData(req, res, cb){
     var lang = req.options.lang;
 
     function saveDataFile(data){
+        try {
             db.put(lang, data, err => console.log('cached', lang, err))
+        } finally {
             cb(data)    
         }
+    }
 
     db.open({ compression: false }, err => {
         if (err) return fetchLanguageData(req, res, cb);