fix(ssr/reactivity): fix composition api behavior in SSR

fix #12615

packages/server-renderer/test/ssr-reactivity.spec.ts

@@ -0,0 +1,192 @@
+// @vitest-environment node
+
+import Vue from 'vue'
+import {
+  reactive,
+  ref,
+  isReactive,
+  shallowRef,
+  isRef,
+  set,
+  nextTick,
+  getCurrentInstance
+} from 'v3'
+import { createRenderer } from '../src'
+
+describe('SSR Reactive', () => {
+  beforeEach(() => {
+    // force SSR env
+    global.process.env.VUE_ENV = 'server'
+  })
+
+  it('should not affect non reactive APIs', () => {
+    expect(typeof window).toBe('undefined')
+    expect((Vue.observable({}) as any).__ob__).toBeUndefined()
+  })
+
+  it('reactive behavior should be consistent in SSR', () => {
+    const obj = reactive({
+      foo: ref(1),
+      bar: {
+        baz: ref(2)
+      },
+      arr: [{ foo: ref(3) }]
+    })
+    expect(isReactive(obj)).toBe(true)
+    expect(obj.foo).toBe(1)
+
+    expect(isReactive(obj.bar)).toBe(true)
+    expect(obj.bar.baz).toBe(2)
+
+    expect(isReactive(obj.arr)).toBe(true)
+    expect(isReactive(obj.arr[0])).toBe(true)
+    expect(obj.arr[0].foo).toBe(3)
+  })
+
+  it('ref value', () => {
+    const r = ref({})
+    expect(isReactive(r.value)).toBe(true)
+  })
+
+  it('should render', async () => {
+    const app = new Vue({
+      setup() {
+        return {
+          count: ref(42)
+        }
+      },
+      render(this: any, h) {
+        return h('div', this.count)
+      }
+    })
+
+    const serverRenderer = createRenderer()
+    const html = await serverRenderer.renderToString(app)
+    expect(html).toBe('<div data-server-rendered="true">42</div>')
+  })
+
+  it('reactive + isReactive', () => {
+    const state = reactive({})
+    expect(isReactive(state)).toBe(true)
+  })
+
+  it('shallowRef + isRef', () => {
+    const state = shallowRef({})
+    expect(isRef(state)).toBe(true)
+  })
+
+  it('should work on objects sets with set()', () => {
+    const state = ref<any>({})
+
+    set(state.value, 'a', {})
+    expect(isReactive(state.value.a)).toBe(true)
+
+    set(state.value, 'a', {})
+    expect(isReactive(state.value.a)).toBe(true)
+  })
+
+  it('should work on arrays sets with set()', () => {
+    const state = ref<any>([])
+
+    set(state.value, 1, {})
+    expect(isReactive(state.value[1])).toBe(true)
+
+    set(state.value, 1, {})
+    expect(isReactive(state.value[1])).toBe(true)
+  })
+
+  // #550
+  it('props should work with set', async done => {
+    let props: any
+
+    const app = new Vue({
+      render(this: any, h) {
+        return h('child', { attrs: { msg: this.msg } })
+      },
+      setup() {
+        return { msg: ref('hello') }
+      },
+      components: {
+        child: {
+          render(this: any, h: any) {
+            return h('span', this.data.msg)
+          },
+          props: ['msg'],
+          setup(_props) {
+            props = _props
+
+            return { data: _props }
+          }
+        }
+      }
+    })
+
+    const serverRenderer = createRenderer()
+    const html = await serverRenderer.renderToString(app)
+
+    expect(html).toBe('<span data-server-rendered="true">hello</span>')
+
+    expect(props.bar).toBeUndefined()
+    set(props, 'bar', 'bar')
+    expect(props.bar).toBe('bar')
+
+    done()
+  })
+
+  // #721
+  it('should behave correctly', () => {
+    const state = ref({ old: ref(false) })
+    set(state.value, 'new', ref(true))
+    // console.log(process.server, 'state.value', JSON.stringify(state.value))
+
+    expect(state.value).toMatchObject({
+      old: false,
+      new: true
+    })
+  })
+
+  // #721
+  it('should behave correctly for the nested ref in the object', () => {
+    const state = { old: ref(false) }
+    set(state, 'new', ref(true))
+    expect(JSON.stringify(state)).toBe(
+      '{"old":{"value":false},"new":{"value":true}}'
+    )
+  })
+
+  // #721
+  it('should behave correctly for ref of object', () => {
+    const state = ref({ old: ref(false) })
+    set(state.value, 'new', ref(true))
+    expect(JSON.stringify(state.value)).toBe('{"old":false,"new":true}')
+  })
+
+  it('ssr should not RangeError: Maximum call stack size exceeded', async () => {
+    new Vue({
+      setup() {
+        // @ts-expect-error
+        const app = getCurrentInstance().proxy
+        let mockNt: any = []
+        mockNt.__ob__ = {}
+        const test = reactive({
+          app,
+          mockNt
+        })
+        return {
+          test
+        }
+      }
+    })
+    await nextTick()
+    expect(
+      `"RangeError: Maximum call stack size exceeded"`
+    ).not.toHaveBeenWarned()
+  })
+
+  it('should work on objects sets with set()', () => {
+    const state = ref<any>({})
+    set(state.value, 'a', {})
+
+    expect(isReactive(state.value.a)).toBe(true)
+  })
+})