Fix serverless target in development

[huv1k]

This fixes problem with missing manifest in development with serverless target.

Fixes: #7617

[github-actions]

Stats from current PR

Click to expand stats

	zeit/next.js canary	huv1k/next.js api-serverless-fix	Change
Build Duration	12.5s	13.5s	⚠️ +995ms
node_modules Size	41.3 MB	41.3 MB	-3.65 kB
Total Bundle (main, webpack, commons) Size	210 kB	210 kB	-197 B
Total Bundle (main, webpack, commons) gzip Size	68.8 kB	68.8 kB	⚠️ +6 B
Client _app Size	2.39 kB	2.39 kB	✓
Client _app gzip Size	1.08 kB	1.08 kB	✓
Client _error Size	8.78 kB	8.78 kB	⚠️ +6 B
Client _error gzip Size	3.31 kB	3.31 kB	-5 B
Client pages/index Size	296 B	288 B	-8 B
Client pages/index gzip Size	222 B	222 B	✓
Client pages/link Size	4.79 kB	4.83 kB	⚠️ +46 B
Client pages/link gzip Size	2.05 kB	2.07 kB	⚠️ +20 B
Client pages/routerDirect Size	411 B	411 B	✓
Client pages/routerDirect gzip Size	296 B	296 B	✓
Client pages/withRouter Size	393 B	393 B	✓
Client pages/withRouter gzip Size	280 B	280 B	✓
Client main Size	24.1 kB	24.3 kB	⚠️ +155 B
Client main gzip Size	7.93 kB	7.98 kB	⚠️ +49 B
Client commons Size	183 kB	183 kB	-344 B
Client commons gzip Size	59.5 kB	59.5 kB	-43 B
Client webpack Size	1.49 kB	1.49 kB	-2 B
Client webpack gzip Size	770 B	769 B	-1 B
Base Rendered Size	1.34 kB	1.34 kB	✓
Build Dir Size	792 kB	792 kB	-187 B

Click to expand serverless stats

	zeit/next.js canary	huv1k/next.js api-serverless-fix	Change
Build Duration	13s	13.9s	⚠️ +911ms
node_modules Size	41.3 MB	41.3 MB	-3.65 kB
Total Bundle (main, webpack, commons) Size	210 kB	210 kB	-197 B
Total Bundle (main, webpack, commons) gzip Size	68.8 kB	68.8 kB	⚠️ +6 B
Client _app Size	2.39 kB	2.39 kB	✓
Client _app gzip Size	1.08 kB	1.08 kB	⚠️ +1 B
Client _error Size	8.78 kB	8.78 kB	⚠️ +6 B
Client _error gzip Size	3.31 kB	3.31 kB	-4 B
Client pages/index Size	296 B	288 B	-8 B
Client pages/index gzip Size	224 B	222 B	-2 B
Client pages/link Size	4.79 kB	4.83 kB	⚠️ +46 B
Client pages/link gzip Size	2.05 kB	2.07 kB	⚠️ +21 B
Client pages/routerDirect Size	411 B	411 B	✓
Client pages/routerDirect gzip Size	296 B	296 B	✓
Client pages/withRouter Size	393 B	393 B	✓
Client pages/withRouter gzip Size	280 B	280 B	✓
Client main Size	24.1 kB	24.3 kB	⚠️ +155 B
Client main gzip Size	7.93 kB	7.98 kB	⚠️ +50 B
Client commons Size	183 kB	183 kB	-344 B
Client commons gzip Size	59.5 kB	59.5 kB	-43 B
Client webpack Size	1.49 kB	1.49 kB	-2 B
Client webpack gzip Size	770 B	769 B	-1 B
Serverless pages/link Size	339 kB	340 kB	⚠️ +1.02 kB
Serverless pages/link gzip Size	87.1 kB	87.3 kB	⚠️ +253 B
Serverless pages/index Size	330 kB	331 kB	⚠️ +958 B
Serverless pages/index gzip Size	84.6 kB	84.9 kB	⚠️ +256 B
Serverless pages/_error Size	330 kB	331 kB	⚠️ +958 B
Serverless pages/_error gzip Size	84.4 kB	84.6 kB	⚠️ +251 B
Serverless pages/routerDirect Size	331 kB	332 kB	⚠️ +958 B
Serverless pages/routerDirect gzip Size	84.6 kB	84.8 kB	⚠️ +250 B
Serverless pages/withRouter Size	331 kB	332 kB	⚠️ +958 B
Serverless pages/withRouter gzip Size	84.6 kB	84.8 kB	⚠️ +250 B
Build Dir Size	2.29 MB	2.29 MB	⚠️ +4.47 kB

[github-actions]

Stats from current PR

Click to expand stats

	zeit/next.js canary	huv1k/next.js api-serverless-fix	Change
Build Duration	12.2s	11.7s	-490ms
node_modules Size	41.3 MB	41.3 MB	⚠️ +105 B
Total Bundle (main, webpack, commons) Size	213 kB	213 kB	✓
Total Bundle (main, webpack, commons) gzip Size	70 kB	70 kB	✓
Client _app Size	2.39 kB	2.39 kB	✓
Client _app gzip Size	1.08 kB	1.08 kB	✓
Client _error Size	8.78 kB	8.78 kB	✓
Client _error gzip Size	3.31 kB	3.31 kB	✓
Client pages/index Size	296 B	296 B	✓
Client pages/index gzip Size	222 B	222 B	✓
Client pages/link Size	4.79 kB	4.79 kB	✓
Client pages/link gzip Size	2.05 kB	2.05 kB	✓
Client pages/routerDirect Size	411 B	411 B	✓
Client pages/routerDirect gzip Size	296 B	296 B	✓
Client pages/withRouter Size	393 B	393 B	✓
Client pages/withRouter gzip Size	280 B	280 B	✓
Client main Size	27.6 kB	27.6 kB	✓
Client main gzip Size	9.13 kB	9.13 kB	✓
Client commons Size	183 kB	183 kB	✓
Client commons gzip Size	59.6 kB	59.6 kB	✓
Client webpack Size	1.49 kB	1.49 kB	✓
Client webpack gzip Size	770 B	770 B	✓
Base Rendered Size	1.34 kB	1.34 kB	✓
Build Dir Size	804 kB	804 kB	✓

Click to expand serverless stats

	zeit/next.js canary	huv1k/next.js api-serverless-fix	Change
Build Duration	12.7s	12.5s	-190ms
node_modules Size	41.3 MB	41.3 MB	⚠️ +105 B
Total Bundle (main, webpack, commons) Size	213 kB	213 kB	✓
Total Bundle (main, webpack, commons) gzip Size	70 kB	70 kB	✓
Client _app Size	2.39 kB	2.39 kB	✓
Client _app gzip Size	1.08 kB	1.08 kB	✓
Client _error Size	8.78 kB	8.78 kB	✓
Client _error gzip Size	3.31 kB	3.31 kB	✓
Client pages/index Size	296 B	296 B	✓
Client pages/index gzip Size	222 B	222 B	✓
Client pages/link Size	4.79 kB	4.79 kB	✓
Client pages/link gzip Size	2.05 kB	2.05 kB	✓
Client pages/routerDirect Size	411 B	411 B	✓
Client pages/routerDirect gzip Size	296 B	296 B	✓
Client pages/withRouter Size	393 B	393 B	✓
Client pages/withRouter gzip Size	280 B	280 B	✓
Client main Size	27.6 kB	27.6 kB	✓
Client main gzip Size	9.13 kB	9.13 kB	✓
Client commons Size	183 kB	183 kB	✓
Client commons gzip Size	59.6 kB	59.6 kB	✓
Client webpack Size	1.49 kB	1.49 kB	✓
Client webpack gzip Size	770 B	770 B	✓
Serverless pages/link Size	339 kB	339 kB	✓
Serverless pages/link gzip Size	87.1 kB	87.1 kB	⚠️ +2 B
Serverless pages/index Size	330 kB	330 kB	✓
Serverless pages/index gzip Size	84.7 kB	84.7 kB	⚠️ +1 B
Serverless pages/_error Size	330 kB	330 kB	✓
Serverless pages/_error gzip Size	84.4 kB	84.4 kB	⚠️ +1 B
Serverless pages/routerDirect Size	331 kB	331 kB	✓
Serverless pages/routerDirect gzip Size	84.7 kB	84.7 kB	⚠️ +2 B
Serverless pages/withRouter Size	331 kB	331 kB	✓
Serverless pages/withRouter gzip Size	84.6 kB	84.6 kB	⚠️ +2 B
Build Dir Size	2.3 MB	2.3 MB	✓