Validate streaming writer chunk type in testing

[huozhi]

x-ref: #36165

Override streaming writer in testing to only allow the Uint8Array type of chunks being piped. Since we're using spwan to start the next process, so it cannot be hijacked in jest module mapper. Use require hook approach instead

Tested with code before #36165, it fails

[ijjk]

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	vercel/next.js canary	huozhi/next.js test/stream-write	Change
buildDuration	15.6s	15.2s	-387ms
buildDurationCached	6.2s	6s	-135ms
nodeModulesSize	485 MB	485 MB	✓

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	huozhi/next.js test/stream-write	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.179	3.188	⚠️ +0.01
/ avg req/sec	786.5	784.12	⚠️ -2.38
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Client Bundles (main, webpack)

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	vercel/next.js canary	huozhi/next.js test/stream-write	Change
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---

Default Build with SWC (Increase detected ⚠️)

General

	vercel/next.js canary	huozhi/next.js test/stream-write	Change
buildDuration	18.1s	18.3s	⚠️ +213ms
buildDurationCached	6s	6.1s	⚠️ +100ms
nodeModulesSize	485 MB	485 MB	✓

Page Load Tests Overall increase ✓

	vercel/next.js canary	huozhi/next.js test/stream-write	Change
/ failed reqs	0	0	✓
/ total time (seconds)	3.184	3.214	⚠️ +0.03
/ avg req/sec	785.07	777.8	⚠️ -7.27
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/error-in-render avg req/sec	1807.37	1841.03	+33.66

Client Bundles (main, webpack)

	vercel/next.js canary	huozhi/next.js test/stream-write	Change
925.HASH.js gzip	178 B	178 B	✓
framework-HASH.js gzip	42.3 kB	42.3 kB	✓
main-HASH.js gzip	28.9 kB	28.9 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	72.8 kB	72.8 kB	✓

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	vercel/next.js canary	huozhi/next.js test/stream-write	Change
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Client Pages

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_app-HASH.js gzip	1.35 kB	1.35 kB	✓
_error-HASH.js gzip	179 B	179 B	✓
amp-HASH.js gzip	313 B	313 B	✓
css-HASH.js gzip	325 B	325 B	✓
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head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	921 B	921 B	✓
image-HASH.js gzip	5.78 kB	5.78 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	2.44 kB	2.44 kB	✓
routerDirect..HASH.js gzip	322 B	322 B	✓
script-HASH.js gzip	393 B	393 B	✓
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85e02e95b279..7e3.css gzip	107 B	107 B	✓
Overall change	16.1 kB	16.1 kB	✓

Client Build Manifests

	vercel/next.js canary	huozhi/next.js test/stream-write	Change
_buildManifest.js gzip	457 B	457 B	✓
Overall change	457 B	457 B	✓

Rendered Page Sizes

	vercel/next.js canary	huozhi/next.js test/stream-write	Change
index.html gzip	530 B	530 B	✓
link.html gzip	544 B	544 B	✓
withRouter.html gzip	525 B	525 B	✓
Overall change	1.6 kB	1.6 kB	✓

Commit: b42f42a

[shuding]

My only concern is that we should revert back these overridden globale after each test, otherwise they can probably pollute other tests.

[huozhi]

@shuding the request hook only works per node process so the overriding will not work after the process is ended.

[shuding]

Thanks!