Support subcommands

[artegoser]

fix this with this

const { Command } = require('commander');
patchCommander(Command);

function patchCommander(Command) {
  Command.prototype.forwardSubcommands = function() {
      var self = this;
      var listener = function(args, unknown) {
          args = args || [];
          unknown = unknown || [];
          var parsed = self.parseOptions(unknown);
          if (parsed.args.length) args = parsed.args.concat(args);
          unknown = parsed.unknown;
          if (unknown.includes('--help') || unknown.includes('-h')) {
              self.outputHelp();
              process.exit(0);
          }
          self.parseArgs(args, unknown);
      };
      if (this._args.length > 0) {
          console.error('forwardSubcommands cannot be applied to command with explicit args');
      }
      var parent = this.parent || this;
      var name = parent === this ? '*' : this._name;
      parent.on('command:' + name, listener);
      if (this._alias) parent.on('command:' + this._alias, listener);
      return this;
  };
}