* Migrate PR stats into Next.js repo

* Update running prettier in local mode

Note this is only for the Next.js core, will look at a configuration for the debugger for Next.js apps soon.

* Allow `@babel/preset-typescript` to be configured

Some usages, e.g. [getting parameter decorators to work properly](https://github.com/WarnerHooh/babel-plugin-parameter-decorator/pull/19), require configuring `@babel/preset-typescript`.

This commit adds that functionality to `next/babel`.

* Add unit test for babel/preset allowing to pass options to @babel/preset-typescript

* Add integration test for onlyRemoveTypeImports

* Update babel dependencies

* Update to compatible typescript version and fix types

* Fix linting and run pre-nccing

* Update size-limit test

* Add additional tests

* Re-Apply delta to be calculated using -262
Co-authored-by: NJJ Kasper <jj@jjsweb.site>

* Add Fast Refresh Support

* Add Basic Acceptance Test

* Increase delay

* fix version

* Ignore test files

* Update packages/next/build/webpack/loaders/next-babel-loader.js

* Copy tests

* Redo test style

* drop directory

* fix compile

* fix remove function

* Update helpers

* bump mkdirp to 1.0.3, which support promise

* fix mkdirp in spr-cache.ts

* bump fs-extra to 9.0.0

* remove mkdirp

* Update @next/bundle-analyzer

* update module

* Update yarn.lock

* checkpoint: api impl

* Add support for tryGetPreviewData

* snapshot: server(less) support

* Add X-Prerender-Bypass-Mode header support

* Pass preview data to getStaticProps call

* add TODO

* setPreviewData

* 100k iterations

* Handle jwt error

* Write out preview values

* forgot file

* set preview props

* Send preview props

* add preview props

* Pass around more data

* update yarn lock

* Fail on Invalid Prerender Manifest

* Make Missing Prerender Manifest Fatal

* fix ts errors

* fix test

* Fix setting cookies + maxage

* Secure is not needed as we encrypt necessary data

* Set on domain root

* Set cookie max ages

* Render a fallback on-demand for non-dynamic pages

* Test preview mode

* remove old build

* remove snapshots

* Add serverless tests

* use afterAll

* Remove object assigns

* fix cookie spread

* add comment

* Add support for rewriting to external resources

* Update rewrite proxying test
Co-authored-by: NTim Neutkens <tim@timneutkens.nl>
Co-authored-by: NJoe Haddad <timer150@gmail.com>

* Add TypeScript Definitions for Sass

* fix test

* Remove experiment

* Add back ssr-prepass for serverless test

* Update size as they both decreased
Co-authored-by: NJJ Kasper <jj@jjsweb.site>

* Migrate from wd to selenium-webdriver

* Add chaining for next-webdriver

* Re-add browserStackLocal global for teardown

* Add additional element methods

* Use freshWindow helper for chrome

* Add selenium-server

* Add cross-env for windows compat

* Fix single quote windows

* Update production preload tests

* Update preload tests count

* Update CircleCi for testing other browsers

* Update CI configs

* Update config

* Add browser.url command

* Add more methods

* Update xcode version

* Make sure to add chromedriver to path

* Add forceExit flag

* Update config

* Update config

* Disable safari

* Fix bug in test

* Add teardown logging

* Update jest teardown

* Move testing ie11 to Azure

* Update job names

* Remove force exiting on long teardown

* Update Azure config

* Re-add safari testing with BrowserStack

* Update config

* Update prefetch tests for ie11

* Update prefetch for safari and ids for ie11 testing

* trigger prefetching manually in ie

* Disable CSS Support When Manually Configured

* upgrade TS

* adjust yarn lock

* Remove another version of TypeScript

* Remove possibly leftover loader

* Revert "Remove possibly leftover loader"

This reverts commit 7ce2d1a8854f3d7a833867f8ac3be7923a6cb1d8.

* Update to use no-op loader

* Redesign PostCSS Configuration Loading

* Test array configuration

* Test new configuration handling

* Remove unnecessary async

* Add tests for optional chaining and nullish coalescing

* Add integration tests

* Add next-win package script

* add node to next script

* Add custom timings for CircleCi

* Re-add split-by flag

* Add testcase item to junit.xml

* Log tests being run

* Update junit.xml path

* bump

* CSS Support Customization

* Sort imports

* Correct PostCSS plugin loading

* Add css customization test

* Test "bad" css configuration

* Add load config test

* adjust spacing

* adjust spacing 2x

* Only allow config through JSON

* Support excluding false plugins

* Test tailwind css behavior

* Test plugin exclusion

* Fix unit test

* Fix config file

* Remove more variants

* Update test cases

* Disable concurrency for tests

* Add browser instance sharing

* Bump concurrency and install chromedriver smoother

* Fix config typo

* Fix local test

* Limit azure concurrency again

* Add delay for empty-object-test

* Make sure to use open port for chromedriver

* Move browser closing to jest-environment

* Re-enable concurrency for Azure

* bump

* Disable concurrency for Azure again

* Re-enable concurrency for Azure

* bump

* Upgrade Babel Dependencies

* Update test for new size

This configures our linting to exit without a success status code when warnings are found