This reverts commit 9112f63e.

Hi there
I noticed you have not yet included the api breaking changes in `"redux-saga": "1.0.0"`. Therefore I felt free to upgrade the dependencies in `examples/with-redux-saga`.
I do not know anything about apollo nor graphql, that is why I did not upgrade `examples/with-apollo-and-redux-saga`. But, I think you should do this on occasion.
Keep the great work up.
Regards

* show pages created when building

* fix types

Fixes #6117

I'm not entirely sure why we had this rule in the first place. I think for some tests related things when we didn't have a monorepo yet. However it could also be related to bundle sizes. I'll compare that when the build finishes.

The reason for #6117 is that we added `react-is` to the dependency tree of Next.js to check valid elements. react-redux uses hoist-non-react-statics which ships a different version of react-is in this case, one that has `ReactIs.isMemo`

Solves a bunch of inconsistencies in handling React elements too.

Start at making side-effect.js / head.js smaller.

Fixes #6121

We want our new memory optimizations (https://github.com/webpack/webpack/pull/8609)

I've updated the TypeScript dependency to the latest version. Also
removed some dependencies that may not be needed.

I've also fixed tslint errors which may have appeared because of
previous updates to this starter kit, as well as added comments
to explain some parts of the code.

I was noticing some bad memory leak on my company's application and I ended up finding this github issue ( https://github.com/styled-components/styled-components/issues/1624 ) .

This comment ( https://github.com/styled-components/styled-components/issues/1624#issuecomment-425382979 ) caught my attention, which lead to this other issue on the repository of styled components website ( https://github.com/styled-components/styled-components-website/issues/329 )

After applying the changes on my project I noticed a huge improvement on memory consumption.

So would be nice to update the example or start a discussion on how to solve this properly 

* Move phases back to next/constants

* Fix typescript error

The current `examples/with-typescript` is not using the latest type definitions currently available on DefinitelyTyped project for next.

Added new list page examples that demonstrate how to use the new Types for both stateless functional components and classes.  Also modified examples for list to demonstrate typings for `getInitialProps`.

Fixes #5363

I noticed this happening when making some changes on the nextjs.org/learn app. Basically we didn't apply updates when a warning was emitted from webpack. This would cause issues for users using eslint-loader or similar too.

With the current example it's not possible to use any components with styles inside a custom App component.
 
Reference issue: cssinjs/jss#939

ctx.pathname was set to url including the query of the page to prefetch
therefore the page was cached with the wrong key (article%3Fid=1?id=1),
and that's why the cache didn't work (right key: article?id=1)

* Additional config options for hot reloader web socket connection

* Apply suggestions from code review

Accepting suggested code changes
Co-Authored-By: Njaslakson <jason.aslakson@americastestkitchen.com>

* updated README with websocket proxy options

* Fix test / cleanup port setting

* Always set proxy_path

This PR adds a basic example using [next-seo](https://www.npmjs.com/package/next-seo).

Updates to the latest version of Storybook.

There's still a few Typescript helpers in use, but regenerator is added by Babel after this change, as it was already in the bundle it'll drop bundle sizes by quite a bit, eg _app.js becomes half the size.

RE: https://github.com/zeit/next.js/issues/4587, this pull request improves the with-segment example.

Previously, only SSR page loads were tracked. This pull request adds manual page view logging via `Router.events.on('routeChangeComplete')` in `Page.js`.

There is also a minor bug fix on the textarea to remove a console error.

`react-is` isn't used in production, so we shouldn't bundle it.

Note: most of those plugins are using the `dev` variable, but in case someone runs `NODE_ENV=development next build`, they would need a copy of `react-is` because the conditional use of `react-is` checks `NODE_ENV` — not whether or not HMR is being used (what what the `dev` variable is based on).

Updated with-context-api to include an about page and also events that pass data to context provider (#6082)

…aces (home and about pages). This makes it the example more clear and why someone might want to use _app.js in the first place.  Also, added a button on the about page that allows for passing and arbitrary value from the about page to the context provider. I disagree with the naming convention of calling the class CounterProvider. It includes both a Provider and Consumer so it should have some name that covers both.  Maybe it should be called CounterContext but I did not change that. I've seen other examples of the same naming conversion so figure I'm the odd duck here (still think it's wrong no matter how many people do it).

I just added a paragraph and some links to the serverless section.

Adds a Bullet Point under "Production deployment"
 for the Table of Contens / Link Section.

Wanted to add this as a comment in #6070.

Great work as always!

I need feedback on if this is clear enough for users.

Introduces full support for Babel 7 including JSX Fragments shorthand. 
Switched to visiting the `Program` path and then start a traversal manually to solve conflicts with other Babel plugins.