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fix: reuse the old preprocessor after changing the lang attr #4224

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merged 3 commits into from Jul 20, 2021
Merged

fix: reuse the old preprocessor after changing the lang attr #4224

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0c276f9
fix(plugin-vue): reuse the old preprocessor after changing the lang attr
y1d7ng Jul 12, 2021
a7ba636
feat(playground): add stylus + change lang test in vue
y1d7ng Jul 16, 2021
24e616f
chore: add eol line break
Shinigami92 Jul 16, 2021
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6 changes: 5 additions & 1 deletion packages/plugin-vue/src/handleHotUpdate.ts
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Expand Up @@ -88,7 +88,11 @@ export async function handleHotUpdate({
const next = nextStyles[i]
if (!prev || !isEqualBlock(prev, next)) {
didUpdateStyle = true
const mod = modules.find((m) => m.url.includes(`type=style&index=${i}`))
const mod = modules.find(
(m) =>
m.url.includes(`type=style&index=${i}`) &&
m.url.endsWith(`.${next.lang || 'css'}`)
Comment on lines +93 to +94
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question:

"[...] changing the lang attribute of the style tag will not cause the preprocessor to be updated. [...]"

Why should this work? You just shrink the condition from includes to includes + endsWith 🤔
Could you explain what is happening here?

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@y1d7ng y1d7ng Jul 12, 2021 •
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When the lang is changed, the corresponding module will be found through the following line of code, but the url of the module still contains the previous lang. The css plugin will parse the url of this module to select the preprocessor.

vite/packages/plugin-vue/src/handleHotUpdate.ts

Line 91 in b5ab77d

const mod = modules.find((m) => m.url.includes(`type=style&index=${i}`))

After adding endsWith, a new module will be generated with the new lang in the url.

)
if (mod) {
affectedModules.add(mod)
} else {
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