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fix issues loading CSS in default slots #61428
Merged
ztanner
merged 1 commit into
canary
from
01-30-ensure_default_slots_have_valid_file_paths
Jan 31, 2024
Merged
fix issues loading CSS in default slots #61428
ztanner
merged 1 commit into
canary
from
01-30-ensure_default_slots_have_valid_file_paths
Jan 31, 2024
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ijjk
added
area: tests
created-by: Next.js team
PRs by the Next.js team.
type: next
labels
Jan 31, 2024
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Stats from current PRDefault BuildGeneral Overall increase
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vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
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buildDuration | 11.7s | 11.7s | N/A |
buildDurationCached | 6.3s | 4.9s | N/A |
nodeModulesSize | 200 MB | 200 MB | |
nextStartRea..uration (ms) | 421ms | 433ms | N/A |
Client Bundles (main, webpack)
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
3f784ff6-HASH.js gzip | 53.4 kB | 53.4 kB | ✓ |
423.HASH.js gzip | 185 B | 181 B | N/A |
68-HASH.js gzip | 29.9 kB | 29.9 kB | N/A |
framework-HASH.js gzip | 45.2 kB | 45.2 kB | ✓ |
main-app-HASH.js gzip | 238 B | 240 B | N/A |
main-HASH.js gzip | 31.8 kB | 31.8 kB | N/A |
webpack-HASH.js gzip | 1.7 kB | 1.7 kB | ✓ |
Overall change | 100 kB | 100 kB | ✓ |
Legacy Client Bundles (polyfills)
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
polyfills-HASH.js gzip | 31 kB | 31 kB | ✓ |
Overall change | 31 kB | 31 kB | ✓ |
Client Pages
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
_app-HASH.js gzip | 194 B | 195 B | N/A |
_error-HASH.js gzip | 182 B | 181 B | N/A |
amp-HASH.js gzip | 502 B | 502 B | ✓ |
css-HASH.js gzip | 320 B | 322 B | N/A |
dynamic-HASH.js gzip | 2.5 kB | 2.5 kB | N/A |
edge-ssr-HASH.js gzip | 255 B | 256 B | N/A |
head-HASH.js gzip | 350 B | 349 B | N/A |
hooks-HASH.js gzip | 368 B | 369 B | N/A |
image-HASH.js gzip | 4.18 kB | 4.18 kB | N/A |
index-HASH.js gzip | 257 B | 256 B | N/A |
link-HASH.js gzip | 2.61 kB | 2.61 kB | N/A |
routerDirect..HASH.js gzip | 310 B | 311 B | N/A |
script-HASH.js gzip | 384 B | 383 B | N/A |
withRouter-HASH.js gzip | 306 B | 308 B | N/A |
1afbb74e6ecf..834.css gzip | 106 B | 106 B | ✓ |
Overall change | 608 B | 608 B | ✓ |
Client Build Manifests
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
_buildManifest.js gzip | 484 B | 484 B | ✓ |
Overall change | 484 B | 484 B | ✓ |
Rendered Page Sizes
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
index.html gzip | 529 B | 527 B | N/A |
link.html gzip | 542 B | 541 B | N/A |
withRouter.html gzip | 523 B | 523 B | ✓ |
Overall change | 523 B | 523 B | ✓ |
Edge SSR bundle Size
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
edge-ssr.js gzip | 94 kB | 94.1 kB | N/A |
page.js gzip | 150 kB | 150 kB | N/A |
Overall change | 0 B | 0 B | ✓ |
Middleware size
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
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middleware-b..fest.js gzip | 624 B | 622 B | N/A |
middleware-r..fest.js gzip | 151 B | 149 B | N/A |
middleware.js gzip | 37.6 kB | 37.6 kB | N/A |
edge-runtime..pack.js gzip | 1.92 kB | 1.92 kB | ✓ |
Overall change | 1.92 kB | 1.92 kB | ✓ |
Next Runtimes
vercel/next.js canary | vercel/next.js 01-30-ensure_default_slots_have_valid_file_paths | Change | |
---|---|---|---|
app-page-exp...dev.js gzip | 170 kB | 170 kB | ✓ |
app-page-exp..prod.js gzip | 95.8 kB | 95.8 kB | ✓ |
app-page-tur..prod.js gzip | 96.4 kB | 96.4 kB | ✓ |
app-page-tur..prod.js gzip | 91 kB | 91 kB | ✓ |
app-page.run...dev.js gzip | 142 kB | 142 kB | ✓ |
app-page.run..prod.js gzip | 90.3 kB | 90.3 kB | ✓ |
app-route-ex...dev.js gzip | 22.2 kB | 22.2 kB | ✓ |
app-route-ex..prod.js gzip | 14.9 kB | 14.9 kB | ✓ |
app-route-tu..prod.js gzip | 14.9 kB | 14.9 kB | ✓ |
app-route-tu..prod.js gzip | 14.5 kB | 14.5 kB | ✓ |
app-route.ru...dev.js gzip | 21.7 kB | 21.7 kB | ✓ |
app-route.ru..prod.js gzip | 14.5 kB | 14.5 kB | ✓ |
pages-api-tu..prod.js gzip | 9.43 kB | 9.43 kB | ✓ |
pages-api.ru...dev.js gzip | 9.7 kB | 9.7 kB | ✓ |
pages-api.ru..prod.js gzip | 9.43 kB | 9.43 kB | ✓ |
pages-turbo...prod.js gzip | 22 kB | 22 kB | ✓ |
pages.runtim...dev.js gzip | 22.7 kB | 22.7 kB | ✓ |
pages.runtim..prod.js gzip | 22 kB | 22 kB | ✓ |
server.runti..prod.js gzip | 49.7 kB | 49.7 kB | ✓ |
Overall change | 933 kB | 933 kB | ✓ |
ztanner
requested review from
timneutkens,
ijjk,
shuding,
huozhi,
feedthejim,
a team and
wyattjoh
as code owners
January 31, 2024 05:03
feedthejim
approved these changes
Jan 31, 2024
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What
When using a default slot that re-exports another page, the CSS entries (and presumably other client reference modules, like JS entries) that correspond with the re-exported page won't be loaded, resulting in CSS styles not being applied.
Why
next-app-loader
constructs the path to the default segment but special cases thechildren
slot (which is used as the page), to mark the segment as an empty string. This is so that the parallel default file can be loaded. However the way thatdefaultPath
is constructed, it assumes thatactualSegment
won't be an empty string, and constructs an invalid path like so:app/example//default.tsx
When we go to look up the JS/CSS entries from the client reference manifest, the key will be incorrect and so it won't find the files for it, resulting in this bug.
How
This moves the
/
delimiting to be part of the creation of theactualSegment
variable so that we only append it when we know we aren't setting it to be an empty string.Fixes #52245
Fixes #49871
Closes NEXT-2309
Closes NEXT-2310