Add match logging to --debug-build-paths by devjiwonchoi · Pull Request #88909 · vercel/next.js

devjiwonchoi · 2026-01-22T19:25:36Z

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devjiwonchoi · 2026-01-22T19:25:54Z

Add match logging to --debug-build-paths #88909 👈 (View in Graphite)
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nextjs-bot · 2026-01-22T19:29:57Z

Failing test suites

Commit: ece4fdd | About building and testing Next.js

pnpm test-start test/production/debug-build-path/debug-build-paths.test.ts (job)

debug-build-paths > default fixture > glob pattern matching > should exclude paths matching negation patterns (DD)
debug-build-paths > default fixture > glob pattern matching > should exclude dynamic route paths with negation (DD)
debug-build-paths > default fixture > glob pattern matching > should support multiple negation patterns (DD)
debug-build-paths > default fixture > glob pattern matching > should build everything except excluded paths when only negation patterns are provided (DD)

Expand output

● debug-build-paths › default fixture › glob pattern matching › should exclude paths matching negation patterns

expect(received).not.toContain(expected) // indexOf

Expected substring: not "/with-type-error"
Received string:        "  Pattern \"app/**/page.tsx,!app/with-type-error/**\" did match 5 files
▲ Next.js 16.2.0-canary.3 (Turbopack)
- Experiments (use with caution):
  ✓ strictRouteTypes (enabled by `__NEXT_EXPERIMENTAL_STRICT_ROUTE_TYPES`)

  Creating an optimized production build ...
✓ Compiled successfully in 1148ms
  Running TypeScript ...
  Finished TypeScript in 1255ms ...
  Collecting page data using 19 workers ...
  Generating static pages using 19 workers (0/5) ...
  Generating static pages using 19 workers (1/5) 
  Generating static pages using 19 workers (2/5) 
  Generating static pages using 19 workers (3/5) 
✓ Generating static pages using 19 workers (5/5) in 193ms
  Finalizing page optimization ...

Route (app)
┌ ○ /
├ ○ /_not-found
├ ○ /about
├ ƒ /blog/[slug]
├ ƒ /blog/[slug]/comments
└ ○ /dashboard


○  (Static)   prerendered as static content
ƒ  (Dynamic)  server-rendered on demand

"

  180 |         expect(buildResult.cliOutput).toContain('○ /dashboard')
  181 |         expect(buildResult.cliOutput).toContain('/blog/[slug]')
> 182 |         expect(buildResult.cliOutput).not.toContain('/with-type-error')
      |                                           ^
  183 |       })
  184 |
  185 |       it('should exclude dynamic route paths with negation', async () => {

  at Object.toContain (production/debug-build-path/debug-build-paths.test.ts:182:43)

● debug-build-paths › default fixture › glob pattern matching › should exclude dynamic route paths with negation

expect(received).not.toContain(expected) // indexOf

Expected substring: not "/blog/[slug]/comments"
Received string:        "  Pattern \"app/blog/**/page.tsx,!app/blog/[slug]/comments/**\" did match 1 files
▲ Next.js 16.2.0-canary.3 (Turbopack)
- Experiments (use with caution):
  ✓ strictRouteTypes (enabled by `__NEXT_EXPERIMENTAL_STRICT_ROUTE_TYPES`)

  Creating an optimized production build ...
✓ Compiled successfully in 1120ms
  Running TypeScript ...
  Finished TypeScript in 1244ms ...
  Collecting page data using 19 workers ...
  Generating static pages using 19 workers (0/2) ...
✓ Generating static pages using 19 workers (2/2) in 168ms
  Finalizing page optimization ...

Route (app)
┌ ○ /_not-found
└ ƒ /blog/[slug]


○  (Static)   prerendered as static content
ƒ  (Dynamic)  server-rendered on demand

"

  194 |         expect(buildResult.cliOutput).toContain('Route (app)')
  195 |         expect(buildResult.cliOutput).toContain('/blog/[slug]')
> 196 |         expect(buildResult.cliOutput).not.toContain('/blog/[slug]/comments')
      |                                           ^
  197 |       })
  198 |
  199 |       it('should support multiple negation patterns', async () => {

  at Object.toContain (production/debug-build-path/debug-build-paths.test.ts:196:43)

● debug-build-paths › default fixture › glob pattern matching › should support multiple negation patterns

expect(received).not.toContain(expected) // indexOf

Expected substring: not "/with-type-error"
Received string:        "  Pattern \"app/**/page.tsx,!app/with-type-error/**,!app/dashboard/**\" did match 4 files
▲ Next.js 16.2.0-canary.3 (Turbopack)
- Experiments (use with caution):
  ✓ strictRouteTypes (enabled by `__NEXT_EXPERIMENTAL_STRICT_ROUTE_TYPES`)

  Creating an optimized production build ...
✓ Compiled successfully in 1123ms
  Running TypeScript ...
  Finished TypeScript in 1271ms ...
  Collecting page data using 19 workers ...
  Generating static pages using 19 workers (0/4) ...
  Generating static pages using 19 workers (1/4) 
  Generating static pages using 19 workers (2/4) 
  Generating static pages using 19 workers (3/4) 
✓ Generating static pages using 19 workers (4/4) in 183ms
  Finalizing page optimization ...

Route (app)
┌ ○ /
├ ○ /_not-found
├ ○ /about
├ ƒ /blog/[slug]
└ ƒ /blog/[slug]/comments


○  (Static)   prerendered as static content
ƒ  (Dynamic)  server-rendered on demand

"

  209 |         expect(buildResult.cliOutput).toContain('○ /')
  210 |         expect(buildResult.cliOutput).toContain('○ /about')
> 211 |         expect(buildResult.cliOutput).not.toContain('/with-type-error')
      |                                           ^
  212 |         expect(buildResult.cliOutput).not.toContain('○ /dashboard')
  213 |       })
  214 |

  at Object.toContain (production/debug-build-path/debug-build-paths.test.ts:211:43)

● debug-build-paths › default fixture › glob pattern matching › should build everything except excluded paths when only negation patterns are provided

expect(received).not.toContain(expected) // indexOf

Expected substring: not "/with-type-error"
Received string:        "  Pattern \"!app/with-type-error/**\" did match 31 files
▲ Next.js 16.2.0-canary.3 (Turbopack)
- Experiments (use with caution):
  ✓ strictRouteTypes (enabled by `__NEXT_EXPERIMENTAL_STRICT_ROUTE_TYPES`)

  Creating an optimized production build ...
✓ Compiled successfully in 1481ms
  Running TypeScript ...
  Finished TypeScript in 1288ms ...
  Collecting page data using 19 workers ...
  Generating static pages using 19 workers (0/8) ...
  Generating static pages using 19 workers (2/8) 
  Generating static pages using 19 workers (4/8) 
  Generating static pages using 19 workers (6/8) 
✓ Generating static pages using 19 workers (8/8) in 212ms
  Finalizing page optimization ...

Route (app)
┌ ○ /
├ ○ /_not-found
├ ○ /about
├ ƒ /blog/[slug]
├ ƒ /blog/[slug]/comments
└ ○ /dashboard

Route (pages)
┌ ƒ /api/hello
├ ○ /bar
└ ○ /foo

○  (Static)   prerendered as static content
ƒ  (Dynamic)  server-rendered on demand

"

  224 |         expect(buildResult.cliOutput).toContain('○ /about')
  225 |         expect(buildResult.cliOutput).toContain('○ /foo')
> 226 |         expect(buildResult.cliOutput).not.toContain('/with-type-error')
      |                                           ^
  227 |       })
  228 |
  229 |       it('should log when pattern matches files', async () => {

  at Object.toContain (production/debug-build-path/debug-build-paths.test.ts:226:43)

vercel · 2026-01-22T19:34:04Z

@@ -72,7 +72,11 @@ export async function resolveBuildPaths(
    })) as string[]

    if (matches.length === 0) {
-      Log.warn(`Pattern "${patterns.join(',')}" did not match any files`)
+      throw new Error(`Pattern "${patterns.join(',')}" did not match any files`)
+    } else {


Log message includes negation patterns (prefixed with !) causing test failures when checking that excluded paths don't appear in output

When glob patterns match files, log 'Pattern "..." did match N files' to provide feedback on successful pattern matching.

nextjs-bot · 2026-01-22T20:51:02Z

Stats from current PR

✅ No significant changes detected

📊 All Metrics

📖 Metrics Glossary

Dev Server Metrics:

Listen = TCP port starts accepting connections
First Request = HTTP server returns successful response
Cold = Fresh build (no cache)
Warm = With cached build artifacts

Build Metrics:

Fresh = Clean build (no .next directory)
Cached = With existing .next directory

Change Thresholds:

Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
Size: Changes < 1KB AND < 1% are insignificant
All other changes are flagged to catch regressions

⚡ Dev Server

Metric	Canary	PR	Change	Trend
Cold (Listen)	455ms	455ms	✓	▁▁▁▁▁
Cold (Ready in log)	437ms	436ms	✓	▁▂▁▁▁
Cold (First Request)	1.163s	1.127s	✓	▁▃▂▁▃
Warm (Listen)	457ms	456ms	✓	▁▁▁▂▁
Warm (Ready in log)	442ms	441ms	✓	▁▁▁▁▁
Warm (First Request)	339ms	338ms	✓	▂▁▁▂▂

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	456ms	455ms	✓	▁▁▁▁▁
Cold (Ready in log)	440ms	441ms	✓	▁▁▁▁▁
Cold (First Request)	1.837s	1.867s	✓	▁▁▁▁▁
Warm (Listen)	456ms	455ms	✓	▁▁▁▁▁
Warm (Ready in log)	439ms	439ms	✓	▁▁▁▁▁
Warm (First Request)	1.852s	1.837s	✓	▁▁▁▁▁

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	4.258s	4.313s	✓	▁▁▁▂▁
Cached Build	4.293s	4.299s	✓	▁▁▁▁▁

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	14.066s	14.141s	✓	▄▂▂▂▂
Cached Build	14.180s	14.236s	✓	▄▄▂▂▁
node_modules Size	460 MB	460 MB	✓	▁▁▁▁▁

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **432 kB** → **432 kB** ✅ -58 B

82 files with content-based hashes (individual files not comparable between builds)

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	761 B	769 B	🔴 +8 B (+1%)
Total	761 B	769 B	⚠️ +8 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	451 B	450 B	✓
Total	451 B	450 B	✅ -1 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
2086.HASH.js gzip	169 B	N/A	-
2161-HASH.js gzip	5.41 kB	N/A	-
2747-HASH.js gzip	4.48 kB	N/A	-
4322-HASH.js gzip	52.7 kB	N/A	-
ec793fe8-HASH.js gzip	62.3 kB	N/A	-
framework-HASH.js gzip	59.8 kB	59.8 kB	✓
main-app-HASH.js gzip	251 B	253 B	✓
main-HASH.js gzip	38.7 kB	39.1 kB	✓
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
1596.HASH.js gzip	N/A	169 B	-
2658-HASH.js gzip	N/A	52.4 kB	-
6349-HASH.js gzip	N/A	4.46 kB	-
7019-HASH.js gzip	N/A	5.43 kB	-
b17a3386-HASH.js gzip	N/A	62.3 kB	-
Total	226 kB	226 kB	⚠️ +54 B

Polyfills

	Canary	PR	Change
polyfills-HASH.js gzip	39.4 kB	39.4 kB	✓
Total	39.4 kB	39.4 kB	✓

Pages

	Canary	PR	Change
_app-HASH.js gzip	194 B	193 B	✓
_error-HASH.js gzip	182 B	182 B	✓
css-HASH.js gzip	336 B	335 B	✓
dynamic-HASH.js gzip	1.8 kB	1.8 kB	✓
edge-ssr-HASH.js gzip	256 B	256 B	✓
head-HASH.js gzip	352 B	349 B	✓
hooks-HASH.js gzip	385 B	384 B	✓
image-HASH.js gzip	580 B	580 B	✓
index-HASH.js gzip	259 B	258 B	✓
link-HASH.js gzip	2.5 kB	2.51 kB	✓
routerDirect..HASH.js gzip	319 B	317 B	✓
script-HASH.js gzip	385 B	387 B	✓
withRouter-HASH.js gzip	316 B	315 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	7.97 kB	7.96 kB	✅ -8 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	126 kB	126 kB	✓
page.js gzip	244 kB	240 kB	🟢 4.71 kB (-2%)
Total	370 kB	366 kB	✅ -4.58 kB

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	617 B	619 B	✓
middleware-r..fest.js gzip	155 B	156 B	✓
middleware.js gzip	33 kB	33.2 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	34.6 kB	34.9 kB	⚠️ +239 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	738 B	738 B	✓
Total	738 B	738 B	✓

Build Cache

	Canary	PR	Change
0.pack gzip	3.71 MB	3.72 MB	🔴 +4.91 kB (+0%)
index.pack gzip	101 kB	100 kB	✓
index.pack.old gzip	101 kB	102 kB	✓
Total	3.91 MB	3.92 MB	⚠️ +4.92 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	306 kB	306 kB	✓
app-page-exp..prod.js gzip	163 kB	163 kB	✓
app-page-tur...dev.js gzip	306 kB	306 kB	✓
app-page-tur..prod.js gzip	163 kB	163 kB	✓
app-page-tur...dev.js gzip	302 kB	302 kB	✓
app-page-tur..prod.js gzip	161 kB	161 kB	✓
app-page.run...dev.js gzip	303 kB	303 kB	✓
app-page.run..prod.js gzip	161 kB	161 kB	✓
app-route-ex...dev.js gzip	69.4 kB	69.4 kB	✓
app-route-ex..prod.js gzip	48.2 kB	48.2 kB	✓
app-route-tu...dev.js gzip	69.4 kB	69.4 kB	✓
app-route-tu..prod.js gzip	48.2 kB	48.2 kB	✓
app-route-tu...dev.js gzip	69 kB	69 kB	✓
app-route-tu..prod.js gzip	47.9 kB	47.9 kB	✓
app-route.ru...dev.js gzip	68.9 kB	68.9 kB	✓
app-route.ru..prod.js gzip	47.9 kB	47.9 kB	✓
dist_client_...dev.js gzip	324 B	324 B	✓
dist_client_...dev.js gzip	326 B	326 B	✓
dist_client_...dev.js gzip	318 B	318 B	✓
dist_client_...dev.js gzip	317 B	317 B	✓
pages-api-tu...dev.js gzip	42.4 kB	42.4 kB	✓
pages-api-tu..prod.js gzip	32.2 kB	32.2 kB	✓
pages-api.ru...dev.js gzip	42.4 kB	42.4 kB	✓
pages-api.ru..prod.js gzip	32.2 kB	32.2 kB	✓
pages-turbo....dev.js gzip	51.7 kB	51.7 kB	✓
pages-turbo...prod.js gzip	38.8 kB	38.8 kB	✓
pages.runtim...dev.js gzip	51.7 kB	51.7 kB	✓
pages.runtim..prod.js gzip	38.8 kB	38.8 kB	✓
server.runti..prod.js gzip	62.3 kB	62.3 kB	✓
Total	2.73 MB	2.73 MB	⚠️ +4 B

nextjs-bot added created-by: Next.js team PRs by the Next.js team. tests type: next labels Jan 22, 2026

devjiwonchoi force-pushed the devjiwonchoi/debug-build-paths-log branch from c99da62 to a7f906b Compare January 22, 2026 19:30

vercel Bot reviewed Jan 22, 2026

View reviewed changes

Add match logging to --debug-build-paths

ece4fdd

When glob patterns match files, log 'Pattern "..." did match N files' to provide feedback on successful pattern matching.

devjiwonchoi force-pushed the devjiwonchoi/debug-build-paths-log branch from a7f906b to ece4fdd Compare January 22, 2026 20:30

devjiwonchoi mentioned this pull request Jan 31, 2026

dx: Add match logging to --debug-build-paths #89334

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devjiwonchoi closed this Feb 14, 2026

devjiwonchoi deleted the devjiwonchoi/debug-build-paths-log branch February 14, 2026 14:11

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Add match logging to --debug-build-paths - #88909

Add match logging to --debug-build-paths#88909
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