[FIX] reactivity: export Reactive type

src/index.ts

@@ -14,6 +14,9 @@ import {
 } from "./blockdom";
 import { mainEventHandler } from "./component/handler";
 import { Portal } from "./portal";
+export type { Reactive } from "./reactivity";
+
+
 
 config.shouldNormalizeDom = false;
 config.mainEventHandler = mainEventHandler;

src/reactivity.ts

@@ -9,7 +9,7 @@ const KEYCHANGES = Symbol("Key changes");
 type ObjectKey = string | number | symbol;
 type Target = object;
 type Callback = () => void;
-type Reactive<T extends Target = Target> = T & {
+export type Reactive<T extends Target = Target> = T & {
   [TARGET]: any;
 };