feat(vapor): hydration

package.json

@@ -98,7 +98,7 @@
     "pug": "^3.0.3",
     "puppeteer": "~24.16.2",
     "rimraf": "^6.0.1",
-    "rollup": "4.50.1",
+    "rollup": "^4.52.5",
     "rollup-plugin-dts": "^6.2.3",
     "rollup-plugin-esbuild": "^6.2.1",
     "rollup-plugin-polyfill-node": "^0.13.0",

packages/compiler-sfc/src/compileScript.ts

@@ -1021,6 +1021,11 @@ export function compileScript(
     : ''
   // wrap setup code with function.
   if (ctx.isTS) {
+    // in SSR, always use defineComponent, so __vapor flag is required
+    if (ssr && vapor) {
+      runtimeOptions += `\n  __vapor: true,`
+    }
+
     // for TS, make sure the exported type is still valid type with
     // correct props information
     // we have to use object spread for types to be merged properly

packages/compiler-ssr/__tests__/ssrVIf.spec.ts

@@ -82,15 +82,15 @@ describe('ssr: v-if', () => {
   test('<template v-if> (text)', () => {
     expect(compile(`<template v-if="foo">hello</template>`).code)
       .toMatchInlineSnapshot(`
-      "
-      return function ssrRender(_ctx, _push, _parent, _attrs) {
-        if (_ctx.foo) {
-          _push(\`<!--[-->hello<!--]-->\`)
-        } else {
-          _push(\`<!---->\`)
-        }
-      }"
-    `)
+        "
+        return function ssrRender(_ctx, _push, _parent, _attrs) {
+          if (_ctx.foo) {
+            _push(\`<!--[-->hello<!--]-->\`)
+          } else {
+            _push(\`<!---->\`)
+          }
+        }"
+      `)
   })
 
   test('<template v-if> (single element)', () => {

packages/compiler-vapor/__tests__/__snapshots__/compile.spec.ts.snap

@@ -1,12 +1,12 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
 exports[`compile > bindings 1`] = `
-"import { child as _child, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { txt as _txt, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div> </div>", true)
 
 export function render(_ctx, $props, $emit, $attrs, $slots) {
   const n0 = t0()
-  const x0 = _child(n0)
+  const x0 = _txt(n0)
   _renderEffect(() => _setText(x0, "count is " + _toDisplayString(_ctx.count) + "."))
   return n0
 }"
@@ -38,7 +38,7 @@ export function render(_ctx) {
     "default": () => {
       const n0 = _createIf(() => (true), () => {
         const n3 = t0()
-        _setInsertionState(n3)
+        _setInsertionState(n3, null, true)
         const n2 = _createComponentWithFallback(_component_Bar)
         _withVaporDirectives(n2, [[_directive_hello, void 0, void 0, { world: true }]])
         return n3
@@ -157,8 +157,8 @@ export function render(_ctx, $props, $emit, $attrs, $slots) {
   const _component_Comp = _resolveComponent("Comp")
   const n0 = t0()
   const n3 = t1()
-  const n2 = _child(n3)
-  _setInsertionState(n3, 0)
+  const n2 = _child(n3, 1)
+  _setInsertionState(n3, 0, true)
   const n1 = _createComponentWithFallback(_component_Comp)
   _renderEffect(() => {
     _setProp(n3, "id", _ctx.foo)
@@ -180,13 +180,13 @@ export function render(_ctx) {
 `;
 
 exports[`compile > dynamic root nodes and interpolation 1`] = `
-"import { child as _child, setProp as _setProp, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, delegateEvents as _delegateEvents, template as _template } from 'vue';
+"import { txt as _txt, setProp as _setProp, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, delegateEvents as _delegateEvents, template as _template } from 'vue';
 const t0 = _template("<button> </button>", true)
 _delegateEvents("click")
 
 export function render(_ctx) {
   const n0 = t0()
-  const x0 = _child(n0)
+  const x0 = _txt(n0)
   n0.$evtclick = e => _ctx.handleClick(e)
   _renderEffect(() => {
     const _count = _ctx.count
@@ -198,12 +198,12 @@ export function render(_ctx) {
 `;
 
 exports[`compile > execution order > basic 1`] = `
-"import { child as _child, setProp as _setProp, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { txt as _txt, setProp as _setProp, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div> </div>", true)
 
 export function render(_ctx) {
   const n0 = t0()
-  const x0 = _child(n0)
+  const x0 = _txt(n0)
   _renderEffect(() => {
     _setProp(n0, "id", _ctx.foo)
     _setText(x0, _toDisplayString(_ctx.bar))
@@ -212,32 +212,56 @@ export function render(_ctx) {
 }"
 `;
 
+exports[`compile > execution order > setInsertionState > next, child and nthChild should be above the setInsertionState 1`] = `
+"import { resolveComponent as _resolveComponent, child as _child, next as _next, setInsertionState as _setInsertionState, createComponentWithFallback as _createComponentWithFallback, nthChild as _nthChild, createIf as _createIf, setProp as _setProp, renderEffect as _renderEffect, template as _template } from 'vue';
+const t0 = _template("<div></div>")
+const t1 = _template("<div><div></div><!><div></div><!><div><button></button></div></div>", true)
+
+export function render(_ctx) {
+  const _component_Comp = _resolveComponent("Comp")
+  const n6 = t1()
+  const n5 = _next(_child(n6), 1)
+  const n7 = _nthChild(n6, 3, 3)
+  const p0 = _next(n7, 4)
+  const n4 = _child(p0, 0)
+  _setInsertionState(n6, n5)
+  const n0 = _createComponentWithFallback(_component_Comp)
+  _setInsertionState(n6, n7, true)
+  const n1 = _createIf(() => (true), () => {
+    const n3 = t0()
+    return n3
+  })
+  _renderEffect(() => _setProp(n4, "disabled", _ctx.foo))
+  return n6
+}"
+`;
+
 exports[`compile > execution order > with insertionState 1`] = `
 "import { resolveComponent as _resolveComponent, child as _child, setInsertionState as _setInsertionState, createSlot as _createSlot, createComponentWithFallback as _createComponentWithFallback, template as _template } from 'vue';
 const t0 = _template("<div><div></div></div>", true)
 
 export function render(_ctx) {
   const _component_Comp = _resolveComponent("Comp")
   const n3 = t0()
-  const n1 = _child(n3)
-  _setInsertionState(n1)
+  const n1 = _child(n3, 0)
+  _setInsertionState(n1, null, true)
   const n0 = _createSlot("default", null)
-  _setInsertionState(n3)
+  _setInsertionState(n3, 1, true)
   const n2 = _createComponentWithFallback(_component_Comp)
   return n3
 }"
 `;
 
 exports[`compile > execution order > with v-once 1`] = `
-"import { child as _child, next as _next, nthChild as _nthChild, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { child as _child, next as _next, nthChild as _nthChild, txt as _txt, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div><span> </span> <br> </div>", true)
 
 export function render(_ctx) {
   const n3 = t0()
-  const n0 = _child(n3)
-  const n1 = _next(n0)
-  const n2 = _nthChild(n3, 3)
-  const x0 = _child(n0)
+  const n0 = _child(n3, 0)
+  const n1 = _next(n0, 1)
+  const n2 = _nthChild(n3, 3, 3)
+  const x0 = _txt(n0)
   _setText(x0, _toDisplayString(_ctx.foo))
   _renderEffect(() => {
     _setText(n1, " " + _toDisplayString(_ctx.bar))
@@ -280,30 +304,6 @@ export function render(_ctx) {
 }"
 `;
 
-exports[`compile > setInsertionState > next, child and nthChild should be above the setInsertionState 1`] = `
-"import { resolveComponent as _resolveComponent, child as _child, next as _next, setInsertionState as _setInsertionState, createComponentWithFallback as _createComponentWithFallback, nthChild as _nthChild, createIf as _createIf, setProp as _setProp, renderEffect as _renderEffect, template as _template } from 'vue';
-const t0 = _template("<div></div>")
-const t1 = _template("<div><div></div><!><div></div><!><div><button></button></div></div>", true)
-
-export function render(_ctx) {
-  const _component_Comp = _resolveComponent("Comp")
-  const n6 = t1()
-  const n5 = _next(_child(n6))
-  const n7 = _nthChild(n6, 3)
-  const p0 = _next(n7)
-  const n4 = _child(p0)
-  _setInsertionState(n6, n5)
-  const n0 = _createComponentWithFallback(_component_Comp)
-  _setInsertionState(n6, n7)
-  const n1 = _createIf(() => (true), () => {
-    const n3 = t0()
-    return n3
-  })
-  _renderEffect(() => _setProp(n4, "disabled", _ctx.foo))
-  return n6
-}"
-`;
-
 exports[`compile > static + dynamic root 1`] = `
 "import { toDisplayString as _toDisplayString, setText as _setText, template as _template } from 'vue';
 const t0 = _template(" ")

packages/compiler-vapor/__tests__/compile.spec.ts

@@ -221,9 +221,19 @@ describe('compile', () => {
     })
   })
 
-  describe('setInsertionState', () => {
-    test('next, child and nthChild should be above the setInsertionState', () => {
-      const code = compile(`
+  describe('execution order', () => {
+    test('basic', () => {
+      const code = compile(`<div :id="foo">{{ bar }}</div>`)
+      expect(code).matchSnapshot()
+      expect(code).contains(
+        `_setProp(n0, "id", _ctx.foo)
+    _setText(x0, _toDisplayString(_ctx.bar))`,
+      )
+    })
+
+    describe('setInsertionState', () => {
+      test('next, child and nthChild should be above the setInsertionState', () => {
+        const code = compile(`
       <div>
         <div />
         <Comp />
@@ -234,18 +244,8 @@ describe('compile', () => {
         </div>
       </div>
       `)
-      expect(code).toMatchSnapshot()
-    })
-  })
-
-  describe('execution order', () => {
-    test('basic', () => {
-      const code = compile(`<div :id="foo">{{ bar }}</div>`)
-      expect(code).matchSnapshot()
-      expect(code).contains(
-        `_setProp(n0, "id", _ctx.foo)
-    _setText(x0, _toDisplayString(_ctx.bar))`,
-      )
+        expect(code).toMatchSnapshot()
+      })
     })
 
     test('with v-once', () => {

packages/compiler-vapor/__tests__/transforms/__snapshots__/TransformTransition.spec.ts.snap

@@ -51,7 +51,7 @@ export function render(_ctx) {
         return n5
       }, () => {
         const n14 = t2()
-        _setInsertionState(n14, 0)
+        _setInsertionState(n14, 0, true)
         const n9 = _createIf(() => (_ctx.c), () => {
           const n11 = t1()
           return n11

packages/compiler-vapor/__tests__/transforms/__snapshots__/expression.spec.ts.snap

@@ -42,13 +42,13 @@ export function render(_ctx) {
 `;
 
 exports[`compiler: expression > empty interpolation 4`] = `
-"import { child as _child, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { child as _child, txt as _txt, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div> </div>", true)
 
 export function render(_ctx) {
   const n1 = t0()
-  const n0 = _child(n1)
-  const x1 = _child(n1)
+  const n0 = _child(n1, 0)
+  const x1 = _txt(n1)
   _renderEffect(() => {
     const _foo = _ctx.foo
     _setText(n0, _toDisplayString(_foo))
@@ -81,13 +81,13 @@ export function render(_ctx, $props, $emit, $attrs, $slots) {
 `;
 
 exports[`compiler: expression > update expression 1`] = `
-"import { child as _child, setProp as _setProp, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { child as _child, txt as _txt, setProp as _setProp, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div> </div>", true)
 
 export function render(_ctx) {
   const n1 = t0()
-  const n0 = _child(n1)
-  const x1 = _child(n1)
+  const n0 = _child(n1, 0)
+  const x1 = _txt(n1)
   _renderEffect(() => {
     const _String = String
     const _foo = _ctx.foo

packages/compiler-vapor/__tests__/transforms/__snapshots__/transformChildren.spec.ts.snap

@@ -7,8 +7,8 @@ const t1 = _template("<div><div></div><!><div></div></div>", true)
 
 export function render(_ctx) {
   const n4 = t1()
-  const n3 = _next(_child(n4))
-  _setInsertionState(n4, n3)
+  const n3 = _next(_child(n4), 1)
+  _setInsertionState(n4, n3, true)
   const n0 = _createIf(() => (1), () => {
     const n2 = t0()
     return n2
@@ -18,16 +18,16 @@ export function render(_ctx) {
 `;
 
 exports[`compiler: children transform > children & sibling references 1`] = `
-"import { child as _child, next as _next, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { child as _child, next as _next, txt as _txt, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div><p> </p> <p> </p></div>", true)
 
 export function render(_ctx) {
   const n3 = t0()
-  const n0 = _child(n3)
-  const n1 = _next(n0)
-  const n2 = _next(n1)
-  const x0 = _child(n0)
-  const x2 = _child(n2)
+  const n0 = _child(n3, 0)
+  const n1 = _next(n0, 1)
+  const n2 = _next(n1, 2)
+  const x0 = _txt(n0)
+  const x2 = _txt(n2)
   _renderEffect(() => {
     _setText(x0, _toDisplayString(_ctx.first))
     _setText(n1, " " + _toDisplayString(_ctx.second) + " " + _toDisplayString(_ctx.third) + " ")
@@ -38,33 +38,33 @@ export function render(_ctx) {
 `;
 
 exports[`compiler: children transform > efficient find 1`] = `
-"import { child as _child, nthChild as _nthChild, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { child as _child, nthChild as _nthChild, txt as _txt, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div><div>x</div><div>x</div><div> </div></div>", true)
 
 export function render(_ctx) {
   const n1 = t0()
-  const n0 = _nthChild(n1, 2)
-  const x0 = _child(n0)
+  const n0 = _nthChild(n1, 2, 2)
+  const x0 = _txt(n0)
   _renderEffect(() => _setText(x0, _toDisplayString(_ctx.msg)))
   return n1
 }"
 `;
 
 exports[`compiler: children transform > efficient traversal 1`] = `
-"import { child as _child, next as _next, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
+"import { child as _child, next as _next, txt as _txt, toDisplayString as _toDisplayString, setText as _setText, renderEffect as _renderEffect, template as _template } from 'vue';
 const t0 = _template("<div><div>x</div><div><span> </span></div><div><span> </span></div><div><span> </span></div></div>", true)
 
 export function render(_ctx) {
   const n3 = t0()
-  const p0 = _next(_child(n3))
-  const n0 = _child(p0)
-  const p1 = _next(p0)
-  const n1 = _child(p1)
-  const p2 = _next(p1)
-  const n2 = _child(p2)
-  const x0 = _child(n0)
-  const x1 = _child(n1)
-  const x2 = _child(n2)
+  const p0 = _next(_child(n3), 1)
+  const n0 = _child(p0, 0)
+  const p1 = _next(p0, 2)
+  const n1 = _child(p1, 0)
+  const p2 = _next(p1, 3)
+  const n2 = _child(p2, 0)
+  const x0 = _txt(n0)
+  const x1 = _txt(n1)
+  const x2 = _txt(n2)
   _renderEffect(() => {
     const _msg = _ctx.msg
     _setText(x0, _toDisplayString(_msg))

packages/compiler-vapor/__tests__/transforms/__snapshots__/transformElement.spec.ts.snap

@@ -1,5 +1,16 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
+exports[`compiler: element transform > checkbox with static indeterminate 1`] = `
+"import { setProp as _setProp, template as _template } from 'vue';
+const t0 = _template("<input type=\\"checkbox\\">", true)
+
+export function render(_ctx) {
+  const n0 = t0()
+  _setProp(n0, "indeterminate", "")
+  return n0
+}"
+`;
+
 exports[`compiler: element transform > component > cache v-on expression with unique handler name 1`] = `
 "import { resolveComponent as _resolveComponent, createComponentWithFallback as _createComponentWithFallback } from 'vue';