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fix: multiple entries with shared css and no JS #13962

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merged 6 commits into from Jul 28, 2023
Merged

fix: multiple entries with shared css and no JS #13962

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a3304ae
fix: multiple entries with shared css and no JS
patak-dev Jul 26, 2023
ee9aee0
test: move new playground test to css-codesplit
patak-dev Jul 27, 2023
05f90c0
chore: revert initial change
patak-dev Jul 27, 2023
de246f3
fix: no-treeshake for JS modules corresponding to HTML entry points
patak-dev Jul 27, 2023
232ca7c
test: check tree-shaken is still working
patak-dev Jul 28, 2023
625d273
test: also check no extra imports
patak-dev Jul 28, 2023
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2 changes: 1 addition & 1 deletion packages/vite/src/node/plugins/html.ts
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Expand Up @@ -600,7 +600,7 @@ export function buildHtmlPlugin(config: ResolvedConfig): Plugin {
js = `import "${modulePreloadPolyfillId}";\n${js}`
}

return js
return { code: js, moduleSideEffects: 'no-treeshake' }
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}
},

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4 changes: 4 additions & 0 deletions playground/css-codesplit/__tests__/css-codesplit.spec.ts
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Expand Up @@ -43,6 +43,10 @@ describe.runIf(isBuild)('build', () => {
expect(findAssetFile(/async.*\.js$/)).toBe('')
})

test('should remove empty chunk, HTML without JS', async () => {
expect(findAssetFile('shared-css-with-js.*.js$')).toMatch(`/* empty css`)
})

test('should generate correct manifest', async () => {
const manifest = readManifest()
expect(manifest['index.html'].css.length).toBe(2)
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5 changes: 5 additions & 0 deletions playground/css-codesplit/shared-css-main.js
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@@ -0,0 +1,5 @@
document.querySelector('#app').innerHTML = `
<div>
<h1>Shared CSS, with JS</h1>
</div>
`
4 changes: 4 additions & 0 deletions playground/css-codesplit/shared-css-no-js.html
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@@ -0,0 +1,4 @@
<link rel="stylesheet" type="text/css" href="./shared-css-theme.css" />
<body>
<h1>Share CSS, no JS</h1>
</body>
3 changes: 3 additions & 0 deletions playground/css-codesplit/shared-css-theme.css
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@@ -0,0 +1,3 @@
h1 {
color: red;
}
5 changes: 5 additions & 0 deletions playground/css-codesplit/shared-css-with-js.html
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@@ -0,0 +1,5 @@
<link rel="stylesheet" type="text/css" href="./shared-css-theme.css" />
<script type="module" src="./shared-css-main.js"></script>
<body>
<h1>Replaced by shared-css-main.js</h1>
</body>
2 changes: 2 additions & 0 deletions playground/css-codesplit/vite.config.js
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Expand Up @@ -9,6 +9,8 @@ export default defineConfig({
main: resolve(__dirname, './index.html'),
other: resolve(__dirname, './other.js'),
style2: resolve(__dirname, './style2.js'),
'shared-css-with-js': resolve(__dirname, 'shared-css-with-js.html'),
'shared-css-no-js': resolve(__dirname, 'shared-css-no-js.html'),
},
output: {
manualChunks(id) {
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