JET's codebase is structured as following:

• src/abstractinterpret: implements the core functionalities of AbstractAnalyzer, the general program analysis framework based on abstract interpretation
• src/toplevel: implements ConcreteInterpreter, which is combined with AbstractAnalyzer to analyze top-level scripts
• src/ui: implements a set of functionalities to show AbstractAnalyzer's analysis result in various frontends, e.g. console output
• src/analyzers: implements the default set of useful analyzers built on top of the AbstractAnalyzer framework
• src/JET.jl: defines the package, implements various analysis entry points