Thanks! It generates mutant by parsing the source code (via tree-sitter) and then using a collection of operators to make changes such as invert booleans, flip comparison operators, etc.

It is built with certain testing libraries in mind, especially for defaults, but it is also extensible such that you should be able to get it working with your custom testing library. The `flawd init` command should provide some meaningful context, and I would be happy to lend a hand with config if you're up for sharing some more context. Feel free to contact me through the site or via email (in profile)