Playground
Write a grammar, type some input, and see what tabnas makes of it — the
syntax tree and the value your actions build. Runs the real
@tabnas/parser and @tabnas/abnf in your browser.
Presets:
This shared link contains a JS rule table. Running it executes its action functions in your browser. Read the grammar on the left first.
What went wrong
Value
Syntax tree
Everything runs client-side — nothing is sent anywhere. The share button encodes the grammar and input in the URL.