setex does not remove the key when use command keys

[ddo]

setex(test, 5, 'test val')
get(test)
> 'test val'
# delay 5s
get(test)
> null
keys()
> test

[mishan]

Hm, interesting. get should be deleting the key, though keys is also missing a cleanup for expired keys. something like this:

      keys() {
        const keys = Object.keys(raw);
        keys.forEach(key => {
          if (expires.has(key) && expires.isExpired(key)) {
            this.delete(key);
          }
        });
        return Object.keys(raw);
      },

However I need to write some tests for this.