Add incremental to template/tsconfig.json to avoid changes on first build

[oBusk]

I used create-next-app to create a new fancy Next 12 app, ran yarn build and got a git diff. The tsconfig.json had a incremental added by next. Just running build shouldn't need I have uncommitted changes.

[sokra]

The incremental: true is a good find

[akadop]

Build fails when incremental is missing from an extended tsconfig

does not whether or not incremental=true or incremental=false, if incremental is in the extended config than it works correctly

#30360

https://github.com/akadop/next-v12-monorepo-bug

[oBusk]

Would something very primitive like this be good to have? oBusk@27b8b29

[ijjk]

Stats from current PR

Default Build (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
buildDuration	23.7s	23.5s	-244ms
buildDurationCached	4.7s	4.6s	-64ms
nodeModulesSize	207 MB	207 MB	⚠️ +3 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
/ failed reqs	0	0	✓
/ total time (seconds)	4.258	4.17	-0.09
/ avg req/sec	587.1	599.49	+12.39
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	2.197	2.114	-0.08
/error-in-render avg req/sec	1137.72	1182.81	+45.09

Client Bundles (main, webpack, commons)

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28 kB	28 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	71.9 kB	71.9 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
_app-HASH.js gzip	1.23 kB	1.23 kB	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	327 B	327 B	✓
dynamic-HASH.js gzip	2.38 kB	2.38 kB	✓
head-HASH.js gzip	350 B	350 B	✓
hooks-HASH.js gzip	635 B	635 B	✓
image-HASH.js gzip	4.44 kB	4.44 kB	✓
index-HASH.js gzip	263 B	263 B	✓
link-HASH.js gzip	1.87 kB	1.87 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	✓
334f979574ae..6f4.css gzip	106 B	106 B	✓
Overall change	13.1 kB	13.1 kB	✓

Client Build Manifests

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
index.html gzip	535 B	535 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	527 B	527 B	✓
Overall change	1.61 kB	1.61 kB	✓

---

Default Build with SWC (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
buildDuration	20.4s	20s	-391ms
buildDurationCached	4.7s	4.8s	⚠️ +63ms
nodeModulesSize	207 MB	207 MB	⚠️ +3 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
/ failed reqs	0	0	✓
/ total time (seconds)	4.087	4.069	-0.02
/ avg req/sec	611.75	614.36	+2.61
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	2.129	2.067	-0.06
/error-in-render avg req/sec	1174.25	1209.2	+34.95

Client Bundles (main, webpack, commons)

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
450.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	28.2 kB	28.2 kB	✓
webpack-HASH.js gzip	1.43 kB	1.43 kB	✓
Overall change	72 kB	72 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
_app-HASH.js gzip	1.22 kB	1.22 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	2.38 kB	2.38 kB	✓
head-HASH.js gzip	342 B	342 B	✓
hooks-HASH.js gzip	621 B	621 B	✓
image-HASH.js gzip	4.46 kB	4.46 kB	✓
index-HASH.js gzip	256 B	256 B	✓
link-HASH.js gzip	1.9 kB	1.9 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	✓
334f979574ae..6f4.css gzip	106 B	106 B	✓
Overall change	13.1 kB	13.1 kB	✓

Client Build Manifests

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
_buildManifest.js gzip	459 B	459 B	✓
Overall change	459 B	459 B	✓

Rendered Page Sizes

	vercel/next.js canary	oBusk/next.js stable-tsconfig-json	Change
index.html gzip	535 B	535 B	✓
link.html gzip	547 B	547 B	✓
withRouter.html gzip	529 B	529 B	✓
Overall change	1.61 kB	1.61 kB	✓

Commit: 77de9ef