refactor rebuild implementation which mount DOM onto the target document object

index.d.ts

@@ -1,11 +1,19 @@
-import { serializedNodeWithId, idNodeMap } from './src/types';
+import { serializedNodeWithId, idNodeMap, INode } from './src/types';
 export * from './src/types';
 
 export function snapshot(n: Document): [serializedNodeWithId | null, idNodeMap];
-export function rebuild(n: serializedNodeWithId, doc: Document): Node | null;
+export function rebuild(
+  n: serializedNodeWithId,
+  doc: Document,
+): [Node | null, idNodeMap];
 export function serializeNodeWithId(
   n: Node,
   doc: Document,
   map: idNodeMap,
 ): serializedNodeWithId | null;
 export function resetId(): void;
+export function buildNodeWithSN(
+  n: serializedNodeWithId,
+  doc: Document,
+  map: idNodeMap,
+): INode | null;