* Fix CSS Media Paths

* update test

* Use absolute path

* Add new tests

* fix import

* fix root components import order

* import order tests

* chunks attachment order tests

* Remove extra logging from on-demand-entries

* Update on-demand-entry-handler.ts

* Update on-demand-entry-handler.ts

* Update on-demand-entry-handler.ts
Co-authored-by: NTim Neutkens <tim@timneutkens.nl>

* Add headers support to custom-routes

* Update manifest version test

* Add headers field for dynamic routes test

* Update test

* Add handling for params in destination query

* Update describe name

* Use Cached SSG Data on History Navigation

* Add data caching test

* Create a static data cache

* Eliminate an if / return

* Do not cache in dev mode

* bump

* bump

* bump

* bump
Co-authored-by: NJJ Kasper <jj@jjsweb.site>

* Add error for rewrite to auto-exported dynamic page

* Update packages/next/next-server/server/render.tsx
Co-authored-by: NJoe Haddad <timer150@gmail.com>

Fixes https://github.com/zeit/next.js/issues/9687#issuecomment-569632942

* Add basePath to routes-manifest

* Bump routes-manifest version

* Update tests for version bump

* Add basePath support

* Add tests including copy of HMR tests

* Add production tests

* Add tests for serverless target

* Add missing quotes

This PR refactors `Router#getInitialProps` in preparation for dedicated SSG fetching logic. This PR should have no functional change -- please review it carefully.

* Expose CSS Issuer When Error
This introduces a friendlier error for invalid CSS imports by telling you the offending file.

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Fixes #9847

* fix test matches

* Add cached off-thread babel transpile

* Update webpack-config.ts
Co-authored-by: NTim Neutkens <tim@timneutkens.nl>

* Optimize Prefetching

* fix css client nav test

* fix preload viewport test

* fix production test

* patch tests more

* Make page loader wait on prefetch

* no unhandled rejection

* Save some bytes

* Add check: true behavior to custom routes

* Update adding dev routes

* Add checking of pages and dynamic routes for check: true

* Fix hasPage binding

* Add tests for check: true behavior

* Update regex checking

* Make changes based on review

* Update to handle rewrites in serverless loader

* Update to not change req.url

* Make sure to always parse dynamic route params

* Export all of pathToRegexp from path-match
Co-authored-by: NJoe Haddad <timer150@gmail.com>