Refactor page component getter in web server

[shuding]

Cleans up the code of the middleware SSR loader and the web server. Currently the page components and render options are provided to the server via globalThis which is not ideal.

Instead we can inject extendRenderOpts and loadComponent to the web server. Since this is the the minimal mode and we'll need to handle ?flight requests, we update the server render opts upon updateRenderOpts (In the future this should be changed to be passed to requestHandler to avoid race conditions).

Currently, we can't fully get rid of the __server_context global as we call getBuildId in the base server constructor.

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 increase ⚠️

	vercel/next.js canary	shuding/next.js shu/f89e	Change
buildDuration	12.5s	12.4s	-29ms
buildDurationCached	3s	3.2s	⚠️ +182ms
nodeModulesSize	359 MB	359 MB	⚠️ +3.51 kB

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	shuding/next.js shu/f89e	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.892	2.918	⚠️ +0.03
/ avg req/sec	864.4	856.76	⚠️ -7.64
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.345	1.386	⚠️ +0.04
/error-in-render avg req/sec	1858.45	1803.27	⚠️ -55.18

Client Bundles (main, webpack, commons)

	vercel/next.js canary	shuding/next.js shu/f89e	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	27.2 kB	27.2 kB	✓
webpack-HASH.js gzip	1.44 kB	1.44 kB	✓
Overall change	71.1 kB	71.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	shuding/next.js shu/f89e	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	shuding/next.js shu/f89e	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	326 B	326 B	✓
dynamic-HASH.js gzip	2.37 kB	2.37 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	919 B	919 B	✓
image-HASH.js gzip	4.94 kB	4.94 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	2.19 kB	2.19 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	14.3 kB	14.3 kB	✓

Client Build Manifests

	vercel/next.js canary	shuding/next.js shu/f89e	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	shuding/next.js shu/f89e	Change
index.html gzip	529 B	529 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 (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	shuding/next.js shu/f89e	Change
buildDuration	16s	15.8s	-182ms
buildDurationCached	3.2s	3.2s	⚠️ +26ms
nodeModulesSize	359 MB	359 MB	⚠️ +3.51 kB

Page Load Tests Overall increase ✓

	vercel/next.js canary	shuding/next.js shu/f89e	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.939	2.956	⚠️ +0.02
/ avg req/sec	850.69	845.69	⚠️ -5
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.383	1.359	-0.02
/error-in-render avg req/sec	1807.52	1839.65	+32.13

Client Bundles (main, webpack, commons)

	vercel/next.js canary	shuding/next.js shu/f89e	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	27.4 kB	27.4 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	shuding/next.js shu/f89e	Change
polyfills-HASH.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	shuding/next.js shu/f89e	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	2.36 kB	2.36 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	911 B	911 B	✓
image-HASH.js gzip	4.98 kB	4.98 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	2.21 kB	2.21 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	14.3 kB	14.3 kB	✓

Client Build Manifests

	vercel/next.js canary	shuding/next.js shu/f89e	Change
_buildManifest.js gzip	458 B	458 B	✓
Overall change	458 B	458 B	✓

Rendered Page Sizes

	vercel/next.js canary	shuding/next.js shu/f89e	Change
index.html gzip	530 B	530 B	✓
link.html gzip	543 B	543 B	✓
withRouter.html gzip	525 B	525 B	✓
Overall change	1.6 kB	1.6 kB	✓

Commit: 14bc592