NBB Core Awaits

NBB has support for, well, it's a closure tool, and it would not be a complete closure tool if it didn't have a REPL. When you type NBB, NPX, NBB, you're dropped into a console REPL. But people also want to develop scripts from their editors so that's why it also supports a circuit REPL and also N REPL. And recently, it also supports completions. So those are things that you might expect from a mature closure environment. You don't have to install any additional tools because this is all built into the NBB project.