Make next-ssg optional

[kdy1]

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

I made next-ssg pass optional.

disableNextSsg can be passed to transform() like transform({disableNextSsg: true}) to disable it.

Note: I'm not sure about the test.

[ijjk]

Stats from current PR

Default Build (Decrease detected ✓)

General Overall increase ⚠️

	vercel/next.js canary	kdy1/next.js tr-config	Change
buildDuration	11.7s	11.8s	⚠️ +106ms
buildDurationCached	3s	3s	-99ms
nodeModulesSize	48.2 MB	48.2 MB	⚠️ +816 B

Page Load Tests Overall decrease ⚠️

	vercel/next.js canary	kdy1/next.js tr-config	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.325	2.337	⚠️ +0.01
/ avg req/sec	1075.39	1069.75	⚠️ -5.64
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.243	1.243	✓
/error-in-render avg req/sec	2011.59	2010.58	⚠️ -1.01

Client Bundles (main, webpack, commons)

	vercel/next.js canary	kdy1/next.js tr-config	Change
745.HASH.js gzip	179 B	179 B	✓
framework-HASH.js gzip	42.2 kB	42.2 kB	✓
main-HASH.js gzip	23.3 kB	23.3 kB	✓
webpack-HASH.js gzip	1.45 kB	1.45 kB	✓
Overall change	67.2 kB	67.2 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	kdy1/next.js tr-config	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	kdy1/next.js tr-config	Change
_app-HASH.js gzip	979 B	979 B	✓
_error-HASH.js gzip	194 B	194 B	✓
amp-HASH.js gzip	312 B	312 B	✓
css-HASH.js gzip	329 B	329 B	✓
dynamic-HASH.js gzip	2.67 kB	2.67 kB	✓
head-HASH.js gzip	351 B	351 B	✓
hooks-HASH.js gzip	918 B	918 B	✓
image-HASH.js gzip	4.14 kB	4.14 kB	✓
index-HASH.js gzip	261 B	261 B	✓
link-HASH.js gzip	1.66 kB	1.66 kB	✓
routerDirect..HASH.js gzip	318 B	318 B	✓
script-HASH.js gzip	387 B	387 B	✓
withRouter-HASH.js gzip	320 B	320 B	✓
bb14e60e810b..30f.css gzip	125 B	125 B	✓
Overall change	13 kB	13 kB	✓

Client Build Manifests

	vercel/next.js canary	kdy1/next.js tr-config	Change
_buildManifest.js gzip	492 B	492 B	✓
Overall change	492 B	492 B	✓

Rendered Page Sizes

	vercel/next.js canary	kdy1/next.js tr-config	Change
index.html gzip	539 B	539 B	✓
link.html gzip	552 B	552 B	✓
withRouter.html gzip	533 B	533 B	✓
Overall change	1.62 kB	1.62 kB	✓

---

Webpack 4 Mode (Increase detected ⚠️)

General Overall increase ⚠️

	vercel/next.js canary	kdy1/next.js tr-config	Change
buildDuration	9.4s	9.5s	⚠️ +51ms
buildDurationCached	4s	4s	⚠️ +6ms
nodeModulesSize	48.2 MB	48.2 MB	⚠️ +816 B

Page Load Tests Overall increase ✓

	vercel/next.js canary	kdy1/next.js tr-config	Change
/ failed reqs	0	0	✓
/ total time (seconds)	2.301	2.316	⚠️ +0.01
/ avg req/sec	1086.31	1079.43	⚠️ -6.88
/error-in-render failed reqs	0	0	✓
/error-in-render total time (seconds)	1.274	1.225	-0.05
/error-in-render avg req/sec	1962.32	2041.13	+78.81

Client Bundles (main, webpack, commons)

	vercel/next.js canary	kdy1/next.js tr-config	Change
16.HASH.js gzip	186 B	186 B	✓
677f882d2ed8..HASH.js gzip	14.1 kB	14.1 kB	✓
framework.HASH.js gzip	41.9 kB	41.9 kB	✓
main-HASH.js gzip	10.7 kB	10.7 kB	✓
webpack-HASH.js gzip	1.19 kB	1.19 kB	✓
Overall change	68.1 kB	68.1 kB	✓

Legacy Client Bundles (polyfills)

	vercel/next.js canary	kdy1/next.js tr-config	Change
polyfills-a4..dd70.js gzip	31 kB	31 kB	✓
Overall change	31 kB	31 kB	✓

Client Pages

	vercel/next.js canary	kdy1/next.js tr-config	Change
_app-HASH.js gzip	964 B	964 B	✓
_error-HASH.js gzip	3.8 kB	3.8 kB	✓
amp-HASH.js gzip	552 B	552 B	✓
css-HASH.js gzip	333 B	333 B	✓
dynamic-HASH.js gzip	2.87 kB	2.87 kB	✓
head-HASH.js gzip	3.06 kB	3.06 kB	✓
hooks-HASH.js gzip	924 B	924 B	✓
index-HASH.js gzip	231 B	231 B	✓
link-HASH.js gzip	1.64 kB	1.64 kB	✓
routerDirect..HASH.js gzip	298 B	298 B	✓
script-HASH.js gzip	3.03 kB	3.03 kB	✓
withRouter-HASH.js gzip	295 B	295 B	✓
30809af5c834..565.css gzip	125 B	125 B	✓
Overall change	18.1 kB	18.1 kB	✓

Client Build Manifests

	vercel/next.js canary	kdy1/next.js tr-config	Change
_buildManifest.js gzip	500 B	500 B	✓
Overall change	500 B	500 B	✓

Rendered Page Sizes

	vercel/next.js canary	kdy1/next.js tr-config	Change
index.html gzip	585 B	585 B	✓
link.html gzip	597 B	597 B	✓
withRouter.html gzip	578 B	578 B	✓
Overall change	1.76 kB	1.76 kB	✓

Commit: df27581