import { type SimplebusCallback } from "https://deno.land/x/earthstar@v9.3.3/src/superbus/simplebus.ts";
definition: (data: T) => void | Promise<void>
x/earthstar/src/superbus/simplebus.ts>SimplebusCallback
import { type SimplebusCallback } from "https://deno.land/x/earthstar@v9.3.3/src/superbus/simplebus.ts";