rvagg/node-abstract-leveldown — pull request #1 by No9 (2013-04-30 09:37:17+00:00)
Title: Changes required to get abstract working with tape

Tape does not support the following so I have replaced them with
t.type = t.ok(foo instanceof Bar)
t.like = t.ok(comparison logic)
t.isa = t.ok(foo instanceof Bar)

The only oddity is
https://github.com/No9/node-abstract-leveldown/pull/new/master#L4R126
Where the it was originally a test for undefined.
Maybe this should test for both?
t.ok(err === null, 'err argument is null')