* Update README.md
I know I'm a moron for not understanding what's written in black on white, but... Maybe this will save someone an hour or two 😄
* Apply proposed changed
* Implement circular JSON err.sh link
* Add test for getInitialProps returning circular json
* Make test warn less
* Fix tests
* Add reference to original tests
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`
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.
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.
`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).
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!
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.
