From 527c2c8bbb5c8fcfdf827dd985a09d7e7388cdad Mon Sep 17 00:00:00 2001
From: Pick <pickchen@tencent.com>
Date: Fri, 17 Jul 2020 21:28:50 +0800
Subject: [PATCH] feat(types): expose DeepReadonly type (#1606)

---
 packages/reactivity/src/index.ts    | 3 ++-
 packages/reactivity/src/reactive.ts | 2 +-
 2 files changed, 3 insertions(+), 2 deletions(-)

diff --git a/packages/reactivity/src/index.ts b/packages/reactivity/src/index.ts
index bbab3118..aaf53242 100644
--- a/packages/reactivity/src/index.ts
+++ b/packages/reactivity/src/index.ts
@@ -22,7 +22,8 @@ export {
   shallowReadonly,
   markRaw,
   toRaw,
-  ReactiveFlags
+  ReactiveFlags,
+  DeepReadonly
 } from './reactive'
 export {
   computed,
diff --git a/packages/reactivity/src/reactive.ts b/packages/reactivity/src/reactive.ts
index 1f01c393..38370152 100644
--- a/packages/reactivity/src/reactive.ts
+++ b/packages/reactivity/src/reactive.ts
@@ -74,7 +74,7 @@ export function shallowReactive<T extends object>(target: T): T {
 
 type Primitive = string | number | boolean | bigint | symbol | undefined | null
 type Builtin = Primitive | Function | Date | Error | RegExp
-type DeepReadonly<T> = T extends Builtin
+export type DeepReadonly<T> = T extends Builtin
   ? T
   : T extends Map<infer K, infer V>
     ? ReadonlyMap<DeepReadonly<K>, DeepReadonly<V>>