Preprocessing and AST inspection

These are debugging commands. If you're working on the compiler, writing a plan that involves syntax, or just trying to confirm that a piece of code parses, two related commands are useful:

agency ast foo.agency
agency parse foo.agency

ast (also aliased as parse) prints the parsed AST as JSON. Like format, it reads from stdin if no input is given.

agency preprocess foo.agency

preprocess is similar to ast, but it runs the AST through the preprocessor first. This is what you want when you need to see the program in the shape that the TypeScript builder will actually consume.