Remove experimental warning from next/jest

[timneutkens]

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]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall decrease ✓

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
buildDuration	13.9s	14.1s	⚠️ +266ms
buildDurationCached	5.3s	5.7s	⚠️ +329ms
nodeModulesSize	359 MB	359 MB	-160 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.91	2.913	0
/ avg req/sec	859.03	858.18	⚠️ -0.85
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.226	1.337	⚠️ +0.11
/error-in-render avg req/sec	2039.55	1870.19	⚠️ -169.36

Client Bundles (main, webpack, commons)

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42 kB	42 kB	✓
main-HASH.js gzip	27.5 kB	27.5 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	71.2 kB	71.2 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
_app-HASH.js gzip	1.36 kB	1.36 kB	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	326 B	326 B	✓
dynamic-HASH.js gzip	2.57 kB	2.57 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	919 B	919 B	✓
image-HASH.js gzip	5.01 kB	5.01 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	2.26 kB	2.26 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	14.7 kB	14.7 kB	✓

Client Build Manifests

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
_buildManifest.js gzip	458 B	458 B	✓
Overall change	458 B	458 B	✓

Rendered Page Sizes

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
index.html gzip	531 B	531 B	✓
link.html gzip	544 B	544 B	✓
withRouter.html gzip	525 B	525 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Default Build with SWC (Decrease detected ✓)

General Overall decrease ✓

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
buildDuration	17.1s	17.5s	⚠️ +371ms
buildDurationCached	5.3s	5.8s	⚠️ +487ms
nodeModulesSize	359 MB	359 MB	-160 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.835	2.922	⚠️ +0.09
/ avg req/sec	881.83	855.44	⚠️ -26.39
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.185	1.292	⚠️ +0.11
/error-in-render avg req/sec	2110.1	1934.83	⚠️ -175.27

Client Bundles (main, webpack, commons)

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.1 kB	42.1 kB	✓
main-HASH.js gzip	27.5 kB	27.5 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	71.3 kB	71.3 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	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	2.56 kB	2.56 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	911 B	911 B	✓
image-HASH.js gzip	5.05 kB	5.05 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	2.28 kB	2.28 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	14.7 kB	14.7 kB	✓

Client Build Manifests

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	timneutkens/next.js add/remove-experimental-warning-next-jest	Change
index.html gzip	533 B	533 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.61 kB	1.61 kB	✓

Commit: 7fea69c