read file in swc when no loaders follow the next-swc-loader

[sokra]

Fixes #31685

Bug

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

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.
• Errors have helpful link attached, see contributing.md

Documentation / Examples

• Make sure the linting passes by running yarn lint

[ijjk]

Failing test suites

Commit: 0ccfcb7

test/integration/app-document-add-hmr/test/index.test.js

• _app/_document add HMR > should HMR when _app is added
• _app/_document add HMR > should HMR when _document is added

Expand output

● _app/_document add HMR › should HMR when _app is added

thrown: "Exceeded timeout of 90000 ms for a hook.
Use jest.setTimeout(newTimeout) to increase the timeout value, if this is a long-running test."

  16 | describe('_app/_document add HMR', () => {
  17 |   beforeAll(async () => {
> 18 |     appPort = await findPort()
     |     ^
  19 |     app = await launchApp(appDir, appPort)
  20 |   })
  21 |   afterAll(() => killApp(app))

  at integration/app-document-add-hmr/test/index.test.js:18:5
  at Object.<anonymous> (integration/app-document-add-hmr/test/index.test.js:17:1)

● _app/_document add HMR › should HMR when _document is added

thrown: "Exceeded timeout of 90000 ms for a hook.
Use jest.setTimeout(newTimeout) to increase the timeout value, if this is a long-running test."

  16 | describe('_app/_document add HMR', () => {
  17 |   beforeAll(async () => {
> 18 |     appPort = await findPort()
     |     ^
  19 |     app = await launchApp(appDir, appPort)
  20 |   })
  21 |   afterAll(() => killApp(app))

  at integration/app-document-add-hmr/test/index.test.js:18:5
  at Object.<anonymous> (integration/app-document-add-hmr/test/index.test.js:17:1)

● Test suite failed to run

TypeError: Cannot read property 'pid' of undefined

  398 |   return new Promise((resolve, reject) => {
  399 |     const newArgs = [
> 400 |       ...args,
      |               ^
  401 |       function (err, res) {
  402 |         if (err) return reject(err)
  403 |         resolve(res)

  at Object.killApp (lib/next-test-utils.js:400:32)
  at integration/app-document-add-hmr/test/index.test.js:22:38

[timneutkens]

💯 💯 💯

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
buildDuration	17.9s	17.8s	-66ms
buildDurationCached	3.4s	3.5s	⚠️ +49ms
nodeModulesSize	345 MB	345 MB	⚠️ +1.89 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.782	2.746	-0.04
/ avg req/sec	898.58	910.44	+11.86
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.202	1.214	⚠️ +0.01
/error-in-render avg req/sec	2079.45	2059.16	⚠️ -20.29

Client Bundles (main, webpack, commons)

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.4 kB	28.4 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	vercel/next.js feature/swc-reads-file	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	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	4.45 kB	4.45 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	vercel/next.js feature/swc-reads-file	Change
_buildManifest.js gzip	460 B	460 B	✓
Overall change	460 B	460 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
index.html gzip	531 B	531 B	✓
link.html gzip	545 B	545 B	✓
withRouter.html gzip	525 B	525 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
buildDuration	19.5s	19.1s	-346ms
buildDurationCached	3.5s	3.4s	-79ms
nodeModulesSize	345 MB	345 MB	⚠️ +1.89 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.789	2.753	-0.04
/ avg req/sec	896.51	907.94	+11.43
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.191	1.206	⚠️ +0.01
/error-in-render avg req/sec	2099.47	2073.32	⚠️ -26.15

Client Bundles (main, webpack, commons)

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.6 kB	28.6 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	72.5 kB	72.5 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	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	2.37 kB	2.37 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	622 B	622 B	✓
image-HASH.js gzip	4.47 kB	4.47 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	vercel/next.js feature/swc-reads-file	Change
_buildManifest.js gzip	458 B	458 B	✓
Overall change	458 B	458 B	✓

Rendered Page Sizes

	vercel/next.js canary	vercel/next.js feature/swc-reads-file	Change
index.html gzip	533 B	533 B	✓
link.html gzip	546 B	546 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.61 kB	1.61 kB	✓

Commit: 0815d65