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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/css.ts
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Expand Up @@ -537,7 +537,7 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
if (cssModuleRE.test(id)) {
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isPureCssChunk = false
}
} else {
} else if (chunk.modules[id].code) {
// if the module does not have a style, then it's not a pure css chunk.
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// this is true because in the `transform` hook above, only modules
// that are css gets added to the `styles` map.
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12 changes: 12 additions & 0 deletions playground/css-nojs/__tests__/css-nojs.spec.ts
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@@ -0,0 +1,12 @@
import { describe, expect, test } from 'vitest'
import { findAssetFile, getColor, isBuild } from '~utils'

test('should load stylesheet', async () => {
expect(await getColor('h1')).toBe('red')
})

describe.runIf(isBuild)('build', () => {
test('should remove empty chunk', async () => {
expect(findAssetFile('main.*.js$')).toMatch(`/* empty css`)
})
})
5 changes: 5 additions & 0 deletions playground/css-nojs/index.html
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@@ -0,0 +1,5 @@
<link rel="stylesheet" type="text/css" href="./src/theme.css" />
<script type="module" src="./src/main.js"></script>
<body>
<h1>includes main.js</h1>
</body>
4 changes: 4 additions & 0 deletions playground/css-nojs/nojs.html
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@@ -0,0 +1,4 @@
<link rel="stylesheet" type="text/css" href="./src/theme.css" />
<body>
<h1>Share CSS, no JS</h1>
</body>
12 changes: 12 additions & 0 deletions playground/css-nojs/package.json
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@@ -0,0 +1,12 @@
{
"name": "@vitejs/test-css-nojs",
"private": true,
"version": "0.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "vite build",
"debug": "node --inspect-brk ../../packages/vite/bin/vite",
"preview": "vite preview"
}
}
5 changes: 5 additions & 0 deletions playground/css-nojs/src/main.js
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@@ -0,0 +1,5 @@
document.querySelector('#app').innerHTML = `
<div>
<h1>Shared CSS, with JS</h1>
</div>
`
3 changes: 3 additions & 0 deletions playground/css-nojs/src/theme.css
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@@ -0,0 +1,3 @@
h1 {
color: red;
}
13 changes: 13 additions & 0 deletions playground/css-nojs/vite.config.js
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@@ -0,0 +1,13 @@
import { resolve } from 'node:path'
import { defineConfig } from 'vite'

export default defineConfig({
build: {
rollupOptions: {
input: {
main: resolve(__dirname, 'index.html'),
nojs: resolve(__dirname, 'nojs.html'),
},
},
},
})