fix: mark props as reactive (#359)

src/setup.ts

@@ -6,6 +6,7 @@ import { resolveSlots, createSlotProxy } from './helper';
 import { hasOwn, isPlainObject, assert, proxy, warn, isFunction } from './utils';
 import { ref } from './apis/state';
 import vmStateManager from './vmStateManager';
+import { markReactive } from './reactivity/reactive';
 
 function asVmProperty(vm: ComponentInstance, propName: string, propValue: Ref<unknown>) {
   const props = vm.$options.props;
@@ -164,6 +165,9 @@ export function mixin(Vue: VueConstructor) {
     const setup = vm.$options.setup!;
     const ctx = createSetupContext(vm);
 
+    // mark props as reactive
+    markReactive(props);
+
     // resolve scopedSlots and slots to functions
     resolveScopedSlots(vm, ctx.slots);
 
@@ -194,7 +198,7 @@ export function mixin(Vue: VueConstructor) {
             bindingValue = ref(bindingValue);
           } else {
             // bind function to the vm, this will make `this` = vm
-            if (isFunction(bindingValue)){
+            if (isFunction(bindingValue)) {
               bindingValue = bindingValue.bind(vm);
             }
             // a non-reactive should not don't get reactivity

test/setup.spec.js

@@ -1,5 +1,5 @@
 const Vue = require('vue/dist/vue.common.js');
-const { ref, computed, createElement: h, provide, inject } = require('../src');
+const { ref, computed, createElement: h, provide, inject, toRefs } = require('../src');
 
 describe('setup', () => {
   beforeEach(() => {
@@ -51,7 +51,7 @@ describe('setup', () => {
     expect(vm.b).toBe(1);
   });
 
-  it('should work with `methods` and `data` options', done => {
+  it('should work with `methods` and `data` options', (done) => {
     let calls = 0;
     const vm = new Vue({
       template: `<div>{{a}}{{b}}{{c}}</div>`,
@@ -215,7 +215,7 @@ describe('setup', () => {
     expect(vm.$refs.test.b).toBe(1);
   });
 
-  it('props should not be reactive', done => {
+  it('props should not be reactive', (done) => {
     let calls = 0;
     const vm = new Vue({
       template: `<child :msg="msg"></child>`,
@@ -247,6 +247,43 @@ describe('setup', () => {
     }).then(done);
   });
 
+  it('toRefs(props) should not warn', async () => {
+    let a;
+
+    const child = {
+      template: `<div/>`,
+
+      props: {
+        r: Number,
+      },
+      setup(props) {
+        a = toRefs(props).r;
+      },
+    };
+
+    const vm = new Vue({
+      template: `<child :r="r"/>`,
+      components: {
+        child,
+      },
+
+      data() {
+        return {
+          r: 1,
+        };
+      },
+    }).$mount();
+
+    expect(a.value).toBe(1);
+    vm.r = 3;
+
+    await Vue.nextTick();
+
+    expect(a.value).toBe(3);
+
+    expect(warn).not.toHaveBeenCalled();
+  });
+
   it('this should be undefined', () => {
     const vm = new Vue({
       template: '<div></div>',
@@ -256,7 +293,7 @@ describe('setup', () => {
     }).$mount();
   });
 
-  it('should not make returned non-reactive object reactive', done => {
+  it('should not make returned non-reactive object reactive', (done) => {
     const vm = new Vue({
       setup() {
         return {
@@ -285,8 +322,8 @@ describe('setup', () => {
   });
 
   it("should put a unenumerable '__ob__' for non-reactive object", () => {
-    const clone = obj => JSON.parse(JSON.stringify(obj));
-    const componentSetup = jest.fn(props => {
+    const clone = (obj) => JSON.parse(JSON.stringify(obj));
+    const componentSetup = jest.fn((props) => {
       const internalOptions = clone(props.options);
       return { internalOptions };
     });
@@ -329,7 +366,7 @@ describe('setup', () => {
           name: 'child',
           props: ['msg'],
           setup() {
-            return props => {
+            return (props) => {
               p = props;
               return null;
             };
@@ -340,7 +377,7 @@ describe('setup', () => {
     expect(p).toBe(undefined);
   });
 
-  it('inline render function should work', done => {
+  it('inline render function should work', (done) => {
     // let createElement;
     const vm = new Vue({
       props: ['msg'],
@@ -383,44 +420,44 @@ describe('setup', () => {
   });
 
   describe('Methods', () => {
-    it('binds methods when calling with parenthesis', async ()=>{
+    it('binds methods when calling with parenthesis', async () => {
       let context = null;
-      const contextFunction = jest.fn(function (){
-        context = this
+      const contextFunction = jest.fn(function () {
+        context = this;
       });
 
       const vm = new Vue({
         template: '<div><button @click="contextFunction()"/></div>',
         setup() {
           return {
-            contextFunction
-          }
-        }
+            contextFunction,
+          };
+        },
       }).$mount();
-  
+
       await vm.$el.querySelector('button').click();
       expect(contextFunction).toBeCalled();
       expect(context).toBe(vm);
     });
 
     it('binds methods when calling without parenthesis', async () => {
       let context = null;
-      const contextFunction = jest.fn(function (){
-        context = this
+      const contextFunction = jest.fn(function () {
+        context = this;
       });
 
       const vm = new Vue({
         template: '<div><button @click="contextFunction"/></div>',
         setup() {
           return {
-            contextFunction
-          }
-        }
+            contextFunction,
+          };
+        },
       }).$mount();
-  
+
       await vm.$el.querySelector('button').click();
       expect(contextFunction).toBeCalled();
       expect(context).toBe(vm);
     });
-  })
+  });
 });