del() empties entire storage

[BigBlueHat]

So...this seems to be close to the root of the new problems.

1. Store some stuff.
2. db.jsonld.del({}, console.log.bind(console))
3. db.get({}, (err, list) => console.log(list.length)) ... returns 0

Doing the same with db.del({}, console.log.bind(console)) doesn't empty anything--which would be the expected behavior.

I'm reading through the code now to see where I can help. Thanks!

[jmatsushita]

Yup. db.jsonld.del({}, {preserve:true}, console.log.bind(console)) works as expected though. I think we need to Set preserve to true by default #51