UPD: initial architecture

src/lib/result/index.ts

@@ -0,0 +1,3 @@
+export type Result<T, E = Error> = { ok: true; value: T } | { ok: false; error: E };
+export const ok = <T>(value: T): Result<T> => ({ ok: true, value });
+export const err = <E>(error: E): Result<never, E> => ({ ok: false, error });