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fix(hmr): duplicate link tags #9697

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Aug 16, 2022
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12 changes: 10 additions & 2 deletions packages/vite/src/client/client.ts
Original file line number Diff line number Diff line change
Expand Up @@ -126,6 +126,7 @@ function cleanUrl(pathname: string): string {
}

let isFirstUpdate = true
const invalidLinkTags = new Set<HTMLLinkElement>()
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Maybe we could use WeakSet to be safe?

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Hmm..., I'm not sure about the client code's browser support

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We are transpiling client code to es2019. So I believe it's fine.


async function handleMessage(payload: HMRPayload) {
switch (payload.type) {
Expand Down Expand Up @@ -166,7 +167,10 @@ async function handleMessage(payload: HMRPayload) {
// URL for the include check.
const el = Array.from(
document.querySelectorAll<HTMLLinkElement>('link')
).find((e) => cleanUrl(e.href).includes(searchUrl))
).find(
(e) =>
!invalidLinkTags.has(e) && cleanUrl(e.href).includes(searchUrl)
)
if (el) {
const newPath = `${base}${searchUrl.slice(1)}${
searchUrl.includes('?') ? '&' : '?'
Expand All @@ -179,9 +183,13 @@ async function handleMessage(payload: HMRPayload) {
// directly, as the new stylesheet has not yet been loaded.
const newLinkTag = el.cloneNode() as HTMLLinkElement
newLinkTag.href = new URL(newPath, el.href).href
const removeOldEl = () => el.remove()
const removeOldEl = () => {
el.remove()
invalidLinkTags.delete(el)
}
newLinkTag.addEventListener('load', removeOldEl)
newLinkTag.addEventListener('error', removeOldEl)
invalidLinkTags.add(el)
el.after(newLinkTag)
}
console.log(`[vite] css hot updated: ${searchUrl}`)
Expand Down