Enable Strict Mode in new create-next-app projects
#25696
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ijjk
added
the
create-next-app
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devknoll
requested review from
divmain,
ijjk,
lfades,
shuding and
timneutkens
as code owners
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Stats from current PRDefault Server Mode (Increase detected
|
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| buildDuration | 13.4s | 13.3s | -109ms |
| buildDurationCached | 3.8s | 3.8s | |
| nodeModulesSize | 46.7 MB | 46.7 MB | ✓ |
Page Load Tests Overall increase ✓
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| / failed reqs | 0 | 0 | ✓ |
| / total time (seconds) | 2.433 | 2.342 | -0.09 |
| / avg req/sec | 1027.73 | 1067.58 | +39.85 |
| /error-in-render failed reqs | 0 | 0 | ✓ |
| /error-in-render total time (seconds) | 1.248 | 1.22 | -0.03 |
| /error-in-render avg req/sec | 2003.41 | 2048.91 | +45.5 |
Client Bundles (main, webpack, commons)
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| framework-HASH.js gzip | 39.3 kB | 39.3 kB | ✓ |
| main-HASH.js gzip | 19.4 kB | 19.4 kB | ✓ |
| webpack-HASH.js gzip | 804 B | 804 B | ✓ |
| Overall change | 59.5 kB | 59.5 kB | ✓ |
Legacy Client Bundles (polyfills)
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| polyfills-HASH.js gzip | 31.1 kB | 31.1 kB | ✓ |
| Overall change | 31.1 kB | 31.1 kB | ✓ |
Client Pages
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _app-HASH.js gzip | 1.02 kB | 1.02 kB | ✓ |
| _error-HASH.js gzip | 3.06 kB | 3.06 kB | ✓ |
| amp-HASH.js gzip | 526 B | 526 B | ✓ |
| css-HASH.js gzip | 334 B | 334 B | ✓ |
| hooks-HASH.js gzip | 890 B | 890 B | ✓ |
| index-HASH.js gzip | 262 B | 262 B | ✓ |
| link-HASH.js gzip | 1.65 kB | 1.65 kB | ✓ |
| routerDirect..HASH.js gzip | 331 B | 331 B | ✓ |
| withRouter-HASH.js gzip | 329 B | 329 B | ✓ |
| bb14e60e810b..30f.css gzip | 125 B | 125 B | ✓ |
| Overall change | 8.53 kB | 8.53 kB | ✓ |
Client Build Manifests
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _buildManifest.js gzip | 392 B | 392 B | ✓ |
| Overall change | 392 B | 392 B | ✓ |
Rendered Page Sizes
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| index.html gzip | 558 B | 558 B | ✓ |
| link.html gzip | 566 B | 566 B | ✓ |
| withRouter.html gzip | 554 B | 554 B | ✓ |
| Overall change | 1.68 kB | 1.68 kB | ✓ |
Serverless Mode
General
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| buildDuration | 15.6s | 15.7s | |
| buildDurationCached | 4.8s | 4.7s | -98ms |
| nodeModulesSize | 46.7 MB | 46.7 MB | ✓ |
Client Bundles (main, webpack, commons)
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| framework-HASH.js gzip | 39.3 kB | 39.3 kB | ✓ |
| main-HASH.js gzip | 19.4 kB | 19.4 kB | ✓ |
| webpack-HASH.js gzip | 804 B | 804 B | ✓ |
| Overall change | 59.5 kB | 59.5 kB | ✓ |
Legacy Client Bundles (polyfills)
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| polyfills-HASH.js gzip | 31.1 kB | 31.1 kB | ✓ |
| Overall change | 31.1 kB | 31.1 kB | ✓ |
Client Pages
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _app-HASH.js gzip | 1.02 kB | 1.02 kB | ✓ |
| _error-HASH.js gzip | 3.06 kB | 3.06 kB | ✓ |
| amp-HASH.js gzip | 526 B | 526 B | ✓ |
| css-HASH.js gzip | 334 B | 334 B | ✓ |
| hooks-HASH.js gzip | 890 B | 890 B | ✓ |
| index-HASH.js gzip | 262 B | 262 B | ✓ |
| link-HASH.js gzip | 1.65 kB | 1.65 kB | ✓ |
| routerDirect..HASH.js gzip | 331 B | 331 B | ✓ |
| withRouter-HASH.js gzip | 329 B | 329 B | ✓ |
| bb14e60e810b..30f.css gzip | 125 B | 125 B | ✓ |
| Overall change | 8.53 kB | 8.53 kB | ✓ |
Client Build Manifests
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _buildManifest.js gzip | 392 B | 392 B | ✓ |
| Overall change | 392 B | 392 B | ✓ |
Serverless bundles
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _error.js | 16.9 kB | 16.9 kB | ✓ |
| 404.html | 2.42 kB | 2.42 kB | ✓ |
| 500.html | 2.41 kB | 2.41 kB | ✓ |
| amp.amp.html | 10.8 kB | 10.8 kB | ✓ |
| amp.html | 1.61 kB | 1.61 kB | ✓ |
| css.html | 1.79 kB | 1.79 kB | ✓ |
| hooks.html | 1.67 kB | 1.67 kB | ✓ |
| index.js | 17.2 kB | 17.2 kB | ✓ |
| link.js | 17.4 kB | 17.4 kB | ✓ |
| routerDirect.js | 17.4 kB | 17.4 kB | ✓ |
| withRouter.js | 17.4 kB | 17.4 kB | ✓ |
| Overall change | 107 kB | 107 kB | ✓ |
Webpack 4 Mode (Increase detected ⚠️ )
General
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| buildDuration | 12.2s | 12.5s | |
| buildDurationCached | 5.1s | 5.1s | -79ms |
| nodeModulesSize | 46.7 MB | 46.7 MB | ✓ |
Page Load Tests Overall increase ✓
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| / failed reqs | 0 | 0 | ✓ |
| / total time (seconds) | 2.474 | 2.405 | -0.07 |
| / avg req/sec | 1010.37 | 1039.63 | +29.26 |
| /error-in-render failed reqs | 0 | 0 | ✓ |
| /error-in-render total time (seconds) | 1.26 | 1.266 | |
| /error-in-render avg req/sec | 1984.47 | 1974.39 |
Client Bundles (main, webpack, commons)
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| 677f882d2ed8..HASH.js gzip | 13.3 kB | 13.3 kB | ✓ |
| framework.HASH.js gzip | 39 kB | 39 kB | ✓ |
| main-HASH.js gzip | 7.26 kB | 7.26 kB | ✓ |
| webpack-HASH.js gzip | 751 B | 751 B | ✓ |
| Overall change | 60.3 kB | 60.3 kB | ✓ |
Legacy Client Bundles (polyfills)
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| polyfills-HASH.js gzip | 31.3 kB | 31.3 kB | ✓ |
| Overall change | 31.3 kB | 31.3 kB | ✓ |
Client Pages
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _app-HASH.js gzip | 1.28 kB | 1.28 kB | ✓ |
| _error-HASH.js gzip | 3.74 kB | 3.74 kB | ✓ |
| amp-HASH.js gzip | 536 B | 536 B | ✓ |
| css-HASH.js gzip | 339 B | 339 B | ✓ |
| hooks-HASH.js gzip | 887 B | 887 B | ✓ |
| index-HASH.js gzip | 227 B | 227 B | ✓ |
| link-HASH.js gzip | 1.63 kB | 1.63 kB | ✓ |
| routerDirect..HASH.js gzip | 303 B | 303 B | ✓ |
| withRouter-HASH.js gzip | 302 B | 302 B | ✓ |
| e025d2764813..52f.css gzip | 125 B | 125 B | ✓ |
| Overall change | 9.37 kB | 9.37 kB | ✓ |
Client Build Manifests
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| _buildManifest.js gzip | 420 B | 420 B | ✓ |
| Overall change | 420 B | 420 B | ✓ |
Rendered Page Sizes
| vercel/next.js canary | azukaru/next.js cna-strict-mode | Change | |
|---|---|---|---|
| index.html gzip | 614 B | 614 B | ✓ |
| link.html gzip | 620 B | 620 B | ✓ |
| withRouter.html gzip | 607 B | 607 B | ✓ |
| Overall change | 1.84 kB | 1.84 kB | ✓ |
timneutkens
approved these changes
Jun 2, 2021
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To encourage best practices for all new apps, we should enable development mode Strict Mode warnings.