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