Question - this loads a 2 MB JS parser written in Rust to turn `x => x.foo` into `{ op: 'project', field: 'foo', target: 'x' }`. But you don't actually allow any complex expressions (and you certainly don't seem to recursively parse references or allow return uplift, e. g. I can't extract out `isOver18` or `isOver(age: int)(Row: IQueryable): IQueryable`). Why did you choose the AST route instead of doing the same thing with a handful of regular expressions?
