How to use the resolve-command.default function in resolve-command

this.aggregateName = this.name;
      }

      const publishEvent = ctx => event => {
        ctx.broker.broadcast(event.type, event);
      };

      this.eventStore = createEventStore({
        storage: this.storage,
        publishEvent: publishEvent(this),
      });

      if (this.settings.aggregate) {
        this.aggregate = this.settings.aggregate;
        delete this.settings.aggregate;
        this.commandHandler = commandHandler({
          eventStore: this.eventStore,
          aggregates: [this.aggregate],
          // snapshotAdapter
        });
        this.metadata.aggregate = true;
        this.metadata.commands = Object.keys(this.aggregate.commands).map(
          name => name
        );
        this.metadata.projection = Object.keys(this.aggregate.projection).map(
          name => name
        );
        this.metadata.events = Object.keys(this.aggregate.events).map(
          name => this.aggregate.events[name]
        );
      }
    },