How to output parser result tree and diagrams?

[Serhioromano]

In Playground on successful result in Output it shows JSN parser tree. When I console.log(parser) I do not see this. How to get that tree?

Is there a tool for diagrams too that I could build diagrams with CLI or JS?

[bd82]

Printing the Concrete Syntax Tree.

Trying using the stringify function

Using the Diagrams

• Old JS example
• Releated docs