Good news: sequelize no longer has opaque global leak errors when using mocha: https://github.com/sequelize/sequelize/pull/1051
The errors are MUCH less opaque and much more relevant to the test failure when watching your tests fail. For example, when you try to create a model with a column that does not exist in your schema:
Error: SQLITE_ERROR: table articles has no column named ‘new_column’
Which is much more useful than a notification that the library that you’re using is leaking globals. Yay!