Support graceful shutdowns

[sidwebworks]

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 19693
• 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

• [ x] Make sure the linting passes by running yarn lint

Closes #29959

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	sidwebworks/next.js canary	Change
buildDuration	16s	16s	⚠️ +11ms
buildDurationCached	6.5s	6.7s	⚠️ +177ms
nodeModulesSize	478 MB	478 MB	⚠️ +364 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	sidwebworks/next.js canary	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.907	3.875	-0.03
/ avg req/sec	639.86	645.16	+5.3
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.357	1.328	-0.03
/error-in-render avg req/sec	1842.05	1882.04	+39.99

Client Bundles (main, webpack)

	vercel/next.js canary	sidwebworks/next.js canary	Change
925.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42 kB	42 kB	✓
main-HASH.js gzip	28.7 kB	28.7 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	72.4 kB	72.4 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	sidwebworks/next.js canary	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	sidwebworks/next.js canary	Change
_app-HASH.js gzip	1.36 kB	1.36 kB	✓
_error-HASH.js gzip	193 B	193 B	✓
amp-HASH.js gzip	308 B	308 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.7 kB	2.7 kB	✓
head-HASH.js gzip	359 B	359 B	✓
hooks-HASH.js gzip	920 B	920 B	✓
image-HASH.js gzip	5.71 kB	5.71 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	2.65 kB	2.65 kB	✓
routerDirect..HASH.js gzip	320 B	320 B	✓
script-HASH.js gzip	391 B	391 B	✓
withRouter-HASH.js gzip	318 B	318 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	15.9 kB	15.9 kB	✓

Client Build Manifests

	vercel/next.js canary	sidwebworks/next.js canary	Change
_buildManifest.js gzip	458 B	458 B	✓
Overall change	458 B	458 B	✓

Rendered Page Sizes

	vercel/next.js canary	sidwebworks/next.js canary	Change
index.html gzip	532 B	532 B	✓
link.html gzip	544 B	544 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.6 kB	1.6 kB	✓

---

Default Build with SWC (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	sidwebworks/next.js canary	Change
buildDuration	18.2s	18.2s	-75ms
buildDurationCached	6.6s	6.5s	-88ms
nodeModulesSize	478 MB	478 MB	⚠️ +364 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	sidwebworks/next.js canary	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.902	3.898	0
/ avg req/sec	640.78	641.34	+0.56
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.346	1.329	-0.02
/error-in-render avg req/sec	1857.54	1880.7	+23.16

Client Bundles (main, webpack)

	vercel/next.js canary	sidwebworks/next.js canary	Change
925.HASH.js gzip	178 B	178 B	✓
framework-HASH.js gzip	42.7 kB	42.7 kB	✓
main-HASH.js gzip	29.2 kB	29.2 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	73.5 kB	73.5 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	sidwebworks/next.js canary	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	sidwebworks/next.js canary	Change
_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	179 B	179 B	✓
amp-HASH.js gzip	311 B	311 B	✓
css-HASH.js gzip	324 B	324 B	✓
dynamic-HASH.js gzip	2.89 kB	2.89 kB	✓
head-HASH.js gzip	357 B	357 B	✓
hooks-HASH.js gzip	920 B	920 B	✓
image-HASH.js gzip	5.8 kB	5.8 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	2.77 kB	2.77 kB	✓
routerDirect..HASH.js gzip	322 B	322 B	✓
script-HASH.js gzip	392 B	392 B	✓
withRouter-HASH.js gzip	317 B	317 B	✓
85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	16.3 kB	16.3 kB	✓

Client Build Manifests

	vercel/next.js canary	sidwebworks/next.js canary	Change
_buildManifest.js gzip	457 B	457 B	✓
Overall change	457 B	457 B	✓

Rendered Page Sizes

	vercel/next.js canary	sidwebworks/next.js canary	Change
index.html gzip	532 B	532 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	528 B	528 B	✓
Overall change	1.61 kB	1.61 kB	✓

Commit: a4e48a1

[ijjk]

Thanks for the PR!