Ensure asPath is correctly normalized in minimalMode with i18n

[ijjk]

This ensures the asPath and req.url values are normalized correctly for fallback pages with i18n in minimal mode. This also copies the minimal mode test suite to run against i18n as well. This also fixes an issue where rewrite params weren't passed correctly on the client when no params were already used in the destination.

The provided reproduction has been deployed against this patch here show it working.

Bug

• Related issues linked using fixes #number
• Integration tests added
• Errors have helpful link attached, see contributing.md

Fixes: #27563
Fixes: #30203

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
buildDuration	23.8s	23.9s	⚠️ +95ms
buildDurationCached	4.7s	4.6s	-90ms
nodeModulesSize	335 MB	335 MB	⚠️ +706 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.995	3.988	-0.01
/ avg req/sec	625.75	626.84	+1.09
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	2.136	2.096	-0.04
/error-in-render avg req/sec	1170.56	1192.8	+22.24

Client Bundles (main, webpack, commons)

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.3 kB	28.3 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.2 kB	72.2 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
_app-HASH.js gzip	1.37 kB	1.37 kB	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	635 B	635 B	✓
image-HASH.js gzip	4.44 kB	4.44 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	1.87 kB	1.87 kB	✓
routerDirect..HASH.js gzip	321 B	321 B	✓
script-HASH.js gzip	383 B	383 B	✓
withRouter-HASH.js gzip	318 B	318 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.3 kB	13.3 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
_buildManifest.js gzip	460 B	460 B	✓
Overall change	460 B	460 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
index.html gzip	522 B	522 B	✓
link.html gzip	535 B	535 B	✓
withRouter.html gzip	516 B	516 B	✓
Overall change	1.57 kB	1.57 kB	✓

---

Default Build with SWC (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
buildDuration	25.1s	25.2s	⚠️ +87ms
buildDurationCached	4.5s	4.6s	⚠️ +44ms
nodeModulesSize	335 MB	335 MB	⚠️ +706 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
/ failed reqs	0	0	✓
/ total time (seconds)	4.251	4.077	-0.17
/ avg req/sec	588.03	613.24	+25.21
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	2.146	2.177	⚠️ +0.03
/error-in-render avg req/sec	1164.76	1148.25	⚠️ -16.51

Client Bundles (main, webpack, commons)

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.5 kB	28.5 kB	✓
webpack-HASH.js gzip	1.43 kB	1.43 kB	✓
Overall change	72.5 kB	72.5 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	180 B	180 B	✓
amp-HASH.js gzip	305 B	305 B	✓
css-HASH.js gzip	321 B	321 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	622 B	622 B	✓
image-HASH.js gzip	4.46 kB	4.46 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	1.91 kB	1.91 kB	✓
routerDirect..HASH.js gzip	314 B	314 B	✓
script-HASH.js gzip	375 B	375 B	✓
withRouter-HASH.js gzip	309 B	309 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	13.2 kB	13.2 kB	✓

Client Build Manifests

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	ijjk/next.js fix/i18n-blocking-asPath	Change
index.html gzip	523 B	523 B	✓
link.html gzip	535 B	535 B	✓
withRouter.html gzip	516 B	516 B	✓
Overall change	1.57 kB	1.57 kB	✓

Commit: 7948e0e