[yatac42]

From a quick look it seems like it's "as fast as a linter" because it is a linter. The homepage says "Not just generic AST patterns", but I couldn't find any rule that did anything besides AST matching. I don't see anything in the code that would enable any kind of control or data flow analysis.

[peaktwilight]

true, right now it's AST pattern matching with `pattern-inside`/`pattern-not-inside` for syntactic scoping. I changed the description. Intraprocedural dataflow is the next step (tracking in #10) and while trying to keep it close linter latency.