add data param to fusion class

src/def/interfaces.ts

@@ -69,6 +69,40 @@ type ClassesToTypes<A extends any[]> = A extends [infer L, ...infer R]
     ]
   : [];
 */
-export type FusionClass<A extends AnyClass[]> =
-  new () => //...args: MatrixToUnionArray<MatrixTwist<ClassesToParams<A>>>
-  Intersecton<ClassesToTypes<A>>;
+type FusionClassType<A extends AnyClass[]> = Intersecton<ClassesToTypes<A>>;
+
+type PartialDeep<T> = T extends
+  | string
+  | number
+  | bigint
+  | boolean
+  | null
+  | undefined
+  | symbol
+  | Date
+  // eslint-disable-next-line @typescript-eslint/ban-types
+  | Function
+  ? T | undefined
+  : // Arrays, Sets and Maps and their readonly counterparts have their items made
+  // deeply partial, but their own instances are left untouched
+  T extends Array<infer ArrayType>
+  ? Array<PartialDeep<ArrayType>>
+  : T extends ReadonlyArray<infer ArrayType>
+  ? ReadonlyArray<ArrayType>
+  : T extends Set<infer SetType>
+  ? Set<PartialDeep<SetType>>
+  : T extends ReadonlySet<infer SetType>
+  ? ReadonlySet<SetType>
+  : T extends Map<infer KeyType, infer ValueType>
+  ? Map<PartialDeep<KeyType>, PartialDeep<ValueType>>
+  : T extends ReadonlyMap<infer KeyType, infer ValueType>
+  ? ReadonlyMap<PartialDeep<KeyType>, PartialDeep<ValueType>>
+  : // ...and finally, all other objects.
+    {
+      [K in keyof T]?: PartialDeep<T[K]>;
+    };
+
+export type FusionClass<A extends AnyClass[]> = new (
+  data: PartialDeep<FusionClassType<A>>,
+) => //...args: MatrixToUnionArray<MatrixTwist<ClassesToParams<A>>>
+FusionClassType<A>;