feat: export api on reactivity

src/reactivity/src/index.ts

@@ -1 +1,14 @@
+export {
+  reactive,
+  readonly,
+  shallowReadonly,
+  isReadonly,
+  isReactive,
+  isProxy,
+} from "./reactive";
 
+export { ref, proxyRefs, unRef, isRef } from "./ref";
+
+export { effect, stop } from "./effect";
+
+export { computed } from "./computed";

src/reactivity/src/ref.ts

@@ -94,6 +94,6 @@ export function unRef(ref) {
   return isRef(ref) ? ref.value : ref;
 }
 
-function isRef(value) {
+export function isRef(value) {
   return value.__v_isRef;
 }