Add experimental next-swc jest transform

[padmaia]

Closes #30811

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: e27495f

test/integration/react-streaming-and-server-components/test/index.test.js

• concurrentFeatures - dev > should support React.lazy and dynamic imports

Expand output

● concurrentFeatures - dev › should support React.lazy and dynamic imports

expect(received).toMatchInlineSnapshot(snapshot)

Snapshot name: `concurrentFeatures - dev should support React.lazy and dynamic imports 1`

Snapshot: "foo.client"
Received: "loading..."

  155 |
  156 |   beforeAll(async () => {
> 157 |     context.appPort = await findPort()
      |                         ^
  158 |     context.server = await nextDev(context.appDir, context.appPort)
  159 |   })
  160 |   afterAll(async () => {

  at Object.<anonymous> (integration/react-streaming-and-server-components/test/index.test.js:157:25)

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
buildDuration	21.3s	20.9s	-370ms
buildDurationCached	4.2s	4.2s	-74ms
nodeModulesSize	332 MB	332 MB	⚠️ +6.21 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.446	3.448	0
/ avg req/sec	725.56	724.98	⚠️ -0.58
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.607	1.671	⚠️ +0.06
/error-in-render avg req/sec	1555.92	1495.93	⚠️ -59.99

Client Bundles (main, webpack, commons)

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28 kB	28 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	71.9 kB	71.9 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
_app-HASH.js gzip	1.23 kB	1.23 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	✓
334f979574ae..6f4.css gzip	106 B	106 B	✓
Overall change	13.1 kB	13.1 kB	✓

Client Build Manifests

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
index.html gzip	521 B	521 B	✓
link.html gzip	533 B	533 B	✓
withRouter.html gzip	515 B	515 B	✓
Overall change	1.57 kB	1.57 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
buildDuration	22.6s	22.6s	⚠️ +9ms
buildDurationCached	4.1s	4.3s	⚠️ +162ms
nodeModulesSize	332 MB	332 MB	⚠️ +6.21 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.42	3.423	0
/ avg req/sec	730.92	730.33	⚠️ -0.59
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.569	1.62	⚠️ +0.05
/error-in-render avg req/sec	1593.22	1543.43	⚠️ -49.79

Client Bundles (main, webpack, commons)

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.2 kB	28.2 kB	✓
webpack-HASH.js gzip	1.43 kB	1.43 kB	✓
Overall change	72.1 kB	72.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
_app-HASH.js gzip	1.22 kB	1.22 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	✓
334f979574ae..6f4.css gzip	106 B	106 B	✓
Overall change	13.1 kB	13.1 kB	✓

Client Build Manifests

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
_buildManifest.js gzip	460 B	460 B	✓
Overall change	460 B	460 B	✓

Rendered Page Sizes

	vercel/next.js canary	padmaia/next.js add/swc-jest	Change
index.html gzip	522 B	522 B	✓
link.html gzip	535 B	535 B	✓
withRouter.html gzip	515 B	515 B	✓
Overall change	1.57 kB	1.57 kB	✓

Commit: 1bcdcca

[timneutkens]

🎉