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Disable split chunks in webpack 5 in dev mode #25735

Merged
merged 2 commits into from Jun 3, 2021
Merged

Disable split chunks in webpack 5 in dev mode #25735

merged 2 commits into from Jun 3, 2021

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ijjk
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@ijjk ijjk commented Jun 3, 2021 •
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Using split chunks can cause a chunks hash to unexpectedly change in development which can cause it to trigger a page reload unexpectedly since we detect changes for _document based on the chunk hash. This disables split chunks for webpack 5 in dev mode until we update handling to check for changes in a different way.

x-ref: #25434

Bug

  • Related issues linked using fixes #number
  • Integration tests added

Feature

  • Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
  • Related issues linked using fixes #number
  • Integration tests added
  • Documentation added
  • Telemetry added. In case of a feature if it's used or not.

Documentation / Examples

  • Make sure the linting passes
@ijjk ijjk added the type: next label Jun 3, 2021
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@ijjk ijjk commented Jun 3, 2021

Stats from current PR

Default Server Mode
General Overall increase ⚠️
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
buildDuration 11.5s 11.4s -59ms
buildDurationCached 3.1s 3.1s -42ms
nodeModulesSize 46.7 MB 46.7 MB ⚠️ +32 B
Page Load Tests Overall increase ✓
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
/ failed reqs 0 0 ✓
/ total time (seconds) 2.057 2.044 -0.01
/ avg req/sec 1215.32 1223.02 +7.7
/error-in-render failed reqs 0 0 ✓
/error-in-render total time (seconds) 1.075 1.077 0
/error-in-render avg req/sec 2325.89 2320.44 ⚠️ -5.45
Client Bundles (main, webpack, commons)
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
framework-HASH.js gzip 39.3 kB 39.3 kB ✓
main-HASH.js gzip 19.5 kB 19.5 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 ijjk/next.js fix/wp5-dev-reload 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 ijjk/next.js fix/wp5-dev-reload Change
_app-HASH.js gzip 801 B 801 B ✓
_error-HASH.js gzip 3.07 kB 3.07 kB ✓
amp-HASH.js gzip 527 B 527 B ✓
css-HASH.js gzip 334 B 334 B ✓
hooks-HASH.js gzip 890 B 890 B ✓
index-HASH.js gzip 263 B 263 B ✓
link-HASH.js gzip 1.64 kB 1.64 kB ✓
routerDirect..HASH.js gzip 333 B 333 B ✓
withRouter-HASH.js gzip 330 B 330 B ✓
bb14e60e810b..30f.css gzip 125 B 125 B ✓
Overall change 8.31 kB 8.31 kB ✓
Client Build Manifests
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
_buildManifest.js gzip 392 B 392 B ✓
Overall change 392 B 392 B ✓
Rendered Page Sizes
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
index.html gzip 559 B 559 B ✓
link.html gzip 568 B 568 B ✓
withRouter.html gzip 556 B 556 B ✓
Overall change 1.68 kB 1.68 kB ✓
Serverless Mode
General Overall increase ⚠️
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
buildDuration 13s 13.1s ⚠️ +53ms
buildDurationCached 4.1s 4.1s ⚠️ +3ms
nodeModulesSize 46.7 MB 46.7 MB ⚠️ +32 B
Client Bundles (main, webpack, commons)
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
framework-HASH.js gzip 39.3 kB 39.3 kB ✓
main-HASH.js gzip 19.5 kB 19.5 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 ijjk/next.js fix/wp5-dev-reload 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 ijjk/next.js fix/wp5-dev-reload Change
_app-HASH.js gzip 801 B 801 B ✓
_error-HASH.js gzip 3.07 kB 3.07 kB ✓
amp-HASH.js gzip 527 B 527 B ✓
css-HASH.js gzip 334 B 334 B ✓
hooks-HASH.js gzip 890 B 890 B ✓
index-HASH.js gzip 263 B 263 B ✓
link-HASH.js gzip 1.64 kB 1.64 kB ✓
routerDirect..HASH.js gzip 333 B 333 B ✓
withRouter-HASH.js gzip 330 B 330 B ✓
bb14e60e810b..30f.css gzip 125 B 125 B ✓
Overall change 8.31 kB 8.31 kB ✓
Client Build Manifests
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
_buildManifest.js gzip 392 B 392 B ✓
Overall change 392 B 392 B ✓
Serverless bundles
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload 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 (Decrease detected ✓)
General Overall increase ⚠️
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
buildDuration 10.4s 10.4s ⚠️ +22ms
buildDurationCached 4.5s 4.4s -92ms
nodeModulesSize 46.7 MB 46.7 MB ⚠️ +32 B
Page Load Tests Overall decrease ⚠️
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
/ failed reqs 0 0 ✓
/ total time (seconds) 2.094 2.107 ⚠️ +0.01
/ avg req/sec 1194.05 1186.76 ⚠️ -7.29
/error-in-render failed reqs 0 0 ✓
/error-in-render total time (seconds) 1.037 1.082 ⚠️ +0.05
/error-in-render avg req/sec 2411.2 2309.6 ⚠️ -101.6
Client Bundles (main, webpack, commons)
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload 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 ijjk/next.js fix/wp5-dev-reload 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 ijjk/next.js fix/wp5-dev-reload Change
_app-HASH.js gzip 1.07 kB 1.07 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 9.16 kB 9.16 kB ✓
Client Build Manifests
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload Change
_buildManifest.js gzip 420 B 420 B ✓
Overall change 420 B 420 B ✓
Rendered Page Sizes
vercel/next.js canary ijjk/next.js fix/wp5-dev-reload 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 ✓
Commit: 4e94081
@timneutkens timneutkens marked this pull request as ready for review Jun 3, 2021
@kodiakhq kodiakhq bot merged commit 5bbcc9e into vercel:canary Jun 3, 2021
26 of 31 checks passed
@ijjk ijjk mentioned this pull request Jun 3, 2021
Closed
@sync-by-unito sync-by-unito bot mentioned this pull request Jun 16, 2021
Closed
flybayer pushed a commit to blitz-js/next.js that referenced this issue Jun 16, 2021
@ijjk
Disable split chunks in webpack 5 in dev mode (vercel#25735)
35c577d 
## Bug

- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added

## Feature

- [ ] Implements an existing feature request or RFC. Make sure the feature request has been accepted for implementation before opening a PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.

## Documentation / Examples

- [ ] Make sure the linting passes
@vercel vercel locked as resolved and limited conversation to collaborators Jan 28, 2022
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