* Do Not Rely on Module State

* Update storage.ts

* Add buildId to SPR data routes

* Update buildId replace in serverless loader

* Use new RegExp and add comment

* Apply suggestions from code review
Co-Authored-By: NJoe Haddad <joe.haddad@zeit.co>

* Test to ensure client transition and handle / data route

* example: add next-offline example

* fix: fix readme

* fix: lint standard

* Add CSS fixture for src dir

* Revert relative customAppFile dir and update tests

* This fixes #8932
* Positive side effect: the csp tag for inline amp-script will
automatically be added.

Ref: https://github.com/zeit/next.js/issues/8976

* Test `public/static/` folder

* Public routes should be matched before static catch-all

* quill js with nextjs

* remove  spaces and blank line

* fix  code  lints

* imporve lin

* fix lint  error

* trying to fix lint

* Update examples/with-quill-js/README.md
Co-Authored-By: NLuis Alvarez D. <luis@zeit.co>

* Update examples/with-quill-js/README.md
Co-Authored-By: NLuis Alvarez D. <luis@zeit.co>

* update readme

* Update example

This reverts commit 67f7cf56.

* Add static directory warning

* Simplify migration to public directory

* Update static-dir-deprecated.md

* Remove experimental.publicDirectory config

* Error when public is set as an output dir

* Remove experimental.publicDirectory checks

* Update publicFiles checking in next build

CSS Modules run their loader on the server, so we need to patch both variants of the webpack configuration.

* Convert Dev Server to TypeScript
This converts the Next.js Development Server to TypeScript in prep for upcoming changes.

* Convert remaining necessary

* Fix some type errors

* Adjust types

* Informative Error for Invalid Global CSS
This adds a helpful error message with a (basic) err.sh link for invalid Global CSS usage.

We'll want to expand on this topic more and offer alternatives when CSS Modules support lands.

* Update expected error message

This pull request converts Next.js' export CLI command to use TypeScript. This is useful for upcoming changes.