level-js is not compatible with the latest version of abstract-leveldown

[dfreire]

const leveldown = require('level-js')
const levelup = require('levelup');
const db = leveldown('my-database-name')
levelup(db);

Causes the assertion error:

".status required, old abstract-leveldown"

The status property is documented in the README of:
https://github.com/Level/abstract-leveldown
AbstractLevelDOWN#status

(As a workaround I'm setting db.status = 'unknown' before doing levelup(db))