Run a default command if not subcommand is specified

[sigmaSd]

I realize this probably not supported, but I figured I'll just ask, the idea is that if I have bin program that accepts check and update, and I want to run one of these commands by default if I didn't pass one of them so bin argument invokes bin update argument for example

import { Command } from "https://deno.land/x/cliffy@v1.0.0-rc.3/command/mod.ts";

const checkCommand = new Command();

const updateCommand = new Command();

const main = new Command()
  .name("bin")
  .action(function () {
    // this will not be reached
    // becuase cliffy validation will catch the command passed as unkown
    // so bin hello errors before reaching here
    if (Deno.args.length !== 0) {
      // run checkCommand();
    } else {
      // this works
      // bin -> shows help
      this.showHelp();
    }
  })
  .command("check", checkCommand)
  .command("update", updateCommand);

await main.parse(Deno.args);