Fix transform of ` in styled-jsx

[kdy1]

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

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
buildDuration	12.5s	12.2s	-300ms
buildDurationCached	3.1s	3s	-175ms
nodeModulesSize	182 MB	182 MB	✓

Page Load Tests Overall increase ✓

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.636	2.352	-0.28
/ avg req/sec	948.26	1062.76	+114.5
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.317	1.27	-0.05
/error-in-render avg req/sec	1898.87	1968.33	+69.46

Client Bundles (main, webpack, commons)

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
745.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	26.6 kB	26.6 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	70.4 kB	70.4 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
_app-HASH.js gzip	979 B	979 B	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	329 B	329 B	✓
dynamic-HASH.js gzip	2.67 kB	2.67 kB	✓
head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	918 B	918 B	✓
image-HASH.js gzip	4.14 kB	4.14 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	1.66 kB	1.66 kB	✓
routerDirect..HASH.js gzip	318 B	318 B	✓
script-HASH.js gzip	387 B	387 B	✓
withRouter-HASH.js gzip	320 B	320 B	✓
bb14e60e810b..30f.css gzip	125 B	125 B	✓
Overall change	13 kB	13 kB	✓

Client Build Manifests

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
_buildManifest.js gzip	492 B	492 B	✓
Overall change	492 B	492 B	✓

Rendered Page Sizes

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
index.html gzip	539 B	539 B	✓
link.html gzip	551 B	551 B	✓
withRouter.html gzip	532 B	532 B	✓
Overall change	1.62 kB	1.62 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
buildDuration	6.1s	6.2s	⚠️ +12ms
buildDurationCached	3.1s	3s	-28ms
nodeModulesSize	182 MB	182 MB	✓

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.525	2.568	⚠️ +0.04
/ avg req/sec	990.16	973.45	⚠️ -16.71
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.29	1.3	⚠️ +0.01
/error-in-render avg req/sec	1938.34	1923.19	⚠️ -15.15

Client Bundles (main, webpack, commons)

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
264.HASH.js gzip	179 B	179 B	✓
675-HASH.js gzip	13.8 kB	13.8 kB	✓
framework-HASH.js gzip	50.7 kB	50.7 kB	✓
main-HASH.js gzip	34.4 kB	34.4 kB	✓
webpack-HASH.js gzip	1.65 kB	1.65 kB	✓
Overall change	101 kB	101 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
_app-HASH.js gzip	1.33 kB	1.33 kB	✓
_error-HASH.js gzip	179 B	179 B	✓
amp-HASH.js gzip	331 B	331 B	✓
css-HASH.js gzip	352 B	352 B	✓
dynamic-HASH.js gzip	2.8 kB	2.8 kB	✓
head-HASH.js gzip	356 B	356 B	✓
hooks-HASH.js gzip	652 B	652 B	✓
image-HASH.js gzip	575 B	575 B	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	2.2 kB	2.2 kB	✓
routerDirect..HASH.js gzip	327 B	327 B	✓
script-HASH.js gzip	392 B	392 B	✓
withRouter-HASH.js gzip	323 B	323 B	✓
bb14e60e810b..30f.css gzip	125 B	125 B	✓
Overall change	10.2 kB	10.2 kB	✓

Client Build Manifests

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
_buildManifest.js gzip	515 B	515 B	✓
Overall change	515 B	515 B	✓

Rendered Page Sizes

	vercel/next.js canary	kdy1/next.js codegen-ver	Change
index.html gzip	539 B	539 B	✓
link.html gzip	552 B	552 B	✓
withRouter.html gzip	531 B	531 B	✓
Overall change	1.62 kB	1.62 kB	✓

Commit: c31a239

[styfle]

Are these whitespace changes intentional?

[kdy1]

It's a result of rustfmt.

I'm not sure, but running rustfmt for all files by doing cargo fmt on commit may worth it.