init code-first mode by splitting module manager

app/src/core/types.ts

@@ -4,3 +4,5 @@ export interface Serializable<Class, Json extends object = object> {
 }
 
 export type MaybePromise<T> = T | Promise<T>;
+
+export type PartialRec<T> = { [P in keyof T]?: PartialRec<T[P]> };