Keep getting database not open and iterator not open when using level in NodeEnv

[kevinkyle4]

I have a simple Express server running Level and if I stop and start express sever back up a few times while testing I get issues with Lock file. How do I prevent?

ModuleError: Database is not open
at maybeOpened (C:\Users\kevin\projectdir\node_modules\abstract-level\abstract-level.js:133:18)
at C:\Users\kevin\projectdir\node_modules\abstract-level\abstract-level.js:160:13
at process.processTicksAndRejections (node:internal/process/task_queues:77:11) {
code: 'LEVEL_DATABASE_NOT_OPEN',
cause: [Error: IO error: LockFile ./db/LOCK: The process cannot access the file because it is being used by another process.

[RioChndr]

I get the same situation, and I think this is feature of level to prevent multiple connection at once.

The trick to open the lock, rename LOCK file in directory of database —or just remove it.

And you should close the database when application shutting down

const shutdownSignals: NodeJS.Signals[] = ['SIGINT', 'SIGTERM', 'SIGQUIT'];
    shutdownSignals.forEach((signal) => {
      process.on(signal, async () => {
      store._db.close().then(() => {
        console.log('Session store database closed successfully');
      }).catch((err) => {
        console.error('Failed to close session store database:', err);
      });
    })