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fix(compiler-sfc): preserve vapor render args for template-only components #14722

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Merged
edison1105 merged 2 commits into from
Apr 14, 2026
Merged

fix(compiler-sfc): preserve vapor render args for template-only components #14722

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de3d268
fix(compiler-sfc): preserve vapor render args for template-only compo…
edison1105 Apr 14, 2026
12f8fe3
chore: update snapshot
edison1105 Apr 14, 2026
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13 changes: 13 additions & 0 deletions packages/compiler-sfc/__tests__/compileTemplate.spec.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -542,6 +542,19 @@ test('returns multiRoot metadata for a multi-root template when vapor is enabled
expect(result.multiRoot).toBe(true)
})

test('template-only vapor compile keeps built-in render args for $slots', () => {
const result = compile({
filename: 'example.vue',
source: `<span v-if="$slots.default"><slot /></span>`,
vapor: true,
})

expect(result.code).toContain(
`export function render(_ctx, $props, $emit, $attrs, $slots)`,
)
expect(result.code).toContain(`_createIf(() => ($slots.default)`)
})

test('returns single-root metadata for root control flow when vapor is enabled', () => {
const result = compile({
filename: 'example.vue',
Expand Down
6 changes: 6 additions & 0 deletions packages/compiler-sfc/src/compileTemplate.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -255,6 +255,12 @@ function doCompileTemplate({
slotted,
sourceMap: true,
...compilerOptions,
// Template-only vapor SFCs have no script analysis, but compiler-vapor
// still needs bindingMetadata to keep built-in render args like $slots.
bindingMetadata:
vapor && !ssr && compilerOptions.bindingMetadata == null
? {}
: compilerOptions.bindingMetadata,
hmr: !isProd,
nodeTransforms: nodeTransforms.concat(
compilerOptions.nodeTransforms || [],
Expand Down
20 changes: 10 additions & 10 deletions .../compiler-vapor/__tests__/transforms/__snapshots__/templateTransformAssetUrl.spec.ts.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@ exports[`compiler sfc: transform asset url > should allow for full base URLs, wi
"import { template as _template } from 'vue';
const t0 = _template("<img src=http://localhost:3000/src/logo.png>", true)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand All @@ -14,7 +14,7 @@ exports[`compiler sfc: transform asset url > should allow for full base URLs, wi
"import { template as _template } from 'vue';
const t0 = _template("<img src=http://localhost:3000/logo.png>", true)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand All @@ -24,7 +24,7 @@ exports[`compiler sfc: transform asset url > should allow for full base URLs, wi
"import { template as _template } from 'vue';
const t0 = _template("<img src=http://localhost/logo.png>", true)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand All @@ -34,7 +34,7 @@ exports[`compiler sfc: transform asset url > should allow for full base URLs, wi
"import { template as _template } from 'vue';
const t0 = _template("<img src=//localhost/logo.png>", true)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand All @@ -45,7 +45,7 @@ exports[`compiler sfc: transform asset url > support uri fragment 1`] = `
import _imports_0 from '@svg/file.svg';
const t0 = _template("<use href=\\"" + _imports_0 + '#fragment' + "\\">", false, 1)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t0()
return [n0, n1]
Expand All @@ -56,7 +56,7 @@ exports[`compiler sfc: transform asset url > support uri is empty 1`] = `
"import { template as _template } from 'vue';
const t0 = _template("<use href>", true, 1)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand All @@ -74,7 +74,7 @@ const t3 = _template("<img src=//example.com/fixtures/logo.png>")
const t4 = _template("<img src=\\"" + _imports_2 + "\\">")
const t5 = _template("<img src=data:image/png;base64,i>")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
const n2 = t1()
Expand All @@ -92,7 +92,7 @@ import _imports_0 from './bar.png';
import _imports_1 from '/bar.png';
const t0 = _template("<div><img src=\\"" + _imports_0 + "\\"><img src=\\"" + _imports_1 + "\\"><img src=https://foo.bar/baz.png><img src=//foo.bar/baz.png><img src=\\"" + _imports_0 + "\\">", true)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand All @@ -106,7 +106,7 @@ const t0 = _template("<img src=/foo/bar.png>")
const t1 = _template("<img src=\\"" + _imports_0 + "\\">")
const t2 = _template("<img src=\\"" + _imports_1 + "\\">")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
const n2 = t1()
Expand All @@ -124,7 +124,7 @@ const t1 = _template("<img src=\\"" + _imports_1 + "\\">")
const t2 = _template("<img src=https://foo.bar/baz.png>")
const t3 = _template("<img src=//foo.bar/baz.png>")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
const n2 = t2()
Expand Down
10 changes: 5 additions & 5 deletions ...es/compiler-vapor/__tests__/transforms/__snapshots__/templateTransformSrcset.spec.ts.snap
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Original file line number Diff line number Diff line change
Expand Up @@ -7,7 +7,7 @@ import _imports_1 from '/foo/logo.png';
const t0 = _template("<img srcset=\\"" + _imports_0 + ', ' + _imports_0 + ' 2x' + "\\">")
const t1 = _template("<img srcset=\\"" + _imports_0 + ' 1x, ' + _imports_1 + ' 2x' + "\\">")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
return [n0, n1]
Expand All @@ -30,7 +30,7 @@ const t8 = _template("<img src=https://example.com/logo.png srcset=\\"https://ex
const t9 = _template("<img src=\\"" + _imports_1 + "\\"srcset=\\"" + _imports_1 + ', ' + _imports_0 + ' 2x' + "\\">")
const t10 = _template("<img src=data:image/png;base64,i srcset=\\"data:image/png;base64,i 1x, data:image/png;base64,i 2x\\">")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
const n2 = t2()
Expand Down Expand Up @@ -63,7 +63,7 @@ const t8 = _template("<img src=https://example.com/logo.png srcset=\\"https://ex
const t9 = _template("<img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ', ' + _imports_1 + ' 2x' + "\\">")
const t10 = _template("<img src=data:image/png;base64,i srcset=\\"data:image/png;base64,i 1x, data:image/png;base64,i 2x\\">")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
const n2 = t2()
Expand Down Expand Up @@ -96,7 +96,7 @@ const t8 = _template("<img src=https://example.com/logo.png srcset=\\"https://ex
const t9 = _template("<img src=\\"" + _imports_1 + "\\"srcset=\\"" + _imports_1 + ', ' + _imports_0 + ' 2x' + "\\">")
const t10 = _template("<img src=data:image/png;base64,i srcset=\\"data:image/png;base64,i 1x, data:image/png;base64,i 2x\\">")

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
const n1 = t1()
const n2 = t2()
Expand All @@ -119,7 +119,7 @@ import _imports_0 from './logo.png';
import _imports_1 from '/logo.png';
const t0 = _template("<div><img src=\\"" + _imports_0 + "\\"srcset><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + "\\"><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ' 2x' + "\\"><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ' 2x' + "\\"><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ', ' + _imports_0 + ' 2x' + "\\"><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ' 2x, ' + _imports_0 + "\\"><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ' 2x, ' + _imports_0 + ' 3x' + "\\"><img src=\\"" + _imports_0 + "\\"srcset=\\"" + _imports_0 + ', ' + _imports_0 + ' 2x, ' + _imports_0 + ' 3x' + "\\"><img src=\\"" + _imports_1 + "\\"srcset=\\"" + _imports_1 + ', ' + _imports_1 + ' 2x' + "\\"><img src=https://example.com/logo.png srcset=\\"https://example.com/logo.png, https://example.com/logo.png 2x\\"><img src=\\"" + _imports_1 + "\\"srcset=\\"" + _imports_1 + ', ' + _imports_0 + ' 2x' + "\\"><img src=data:image/png;base64,i srcset=\\"data:image/png;base64,i 1x, data:image/png;base64,i 2x\\">", true)

export function render(_ctx) {
export function render(_ctx, $props, $emit, $attrs, $slots) {
const n0 = t0()
return n0
}"
Expand Down
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