feat: re-export defer from p-defer

src/module/index.ts

@@ -1,3 +1,6 @@
+import defer from "p-defer";
+export { defer };
+
 export { log, logErr } from "./log.js";
 export { ActiveQuery, addHandler, handleMessage } from "./messages.js";
 export { callModule, connectModule, newKernelQuery } from "./queries.js";