* Fix TypeScript decorator support

* Update babel flow override

* WIP

* Add allowESModules option to babel-preset-react-app

* changes after feedback

* Apply suggestions from code review

Co-Authored-By: Pajn <rasmus@eneman.eu>

 - babel-plugin-named-asset-import@0.2.3
 - babel-preset-react-app@6.1.0
 - create-react-app@2.1.1
 - react-dev-utils@6.1.1
 - react-error-overlay@5.1.0
 - react-scripts@2.1.1

* Turn on decorators

* Add decorator test

 - babel-preset-react-app@6.0.0
 - confusing-browser-globals@1.0.5
 - create-react-app@2.1.0
 - eslint-config-react-app@3.0.5
 - react-dev-utils@6.1.0
 - react-error-overlay@5.0.6
 - react-scripts@2.1.0

 - babel-preset-react-app@5.0.4
 - confusing-browser-globals@1.0.4
 - create-react-app@2.0.4
 - eslint-config-react-app@3.0.4
 - react-dev-utils@6.0.5
 - react-error-overlay@5.0.5
 - react-scripts@2.0.5

* use the correct dependency for babel-plugin-dynamic-import-node

* Update package.json

 - babel-preset-react-app@5.0.3
 - create-react-app@2.0.3
 - react-dev-utils@6.0.4
 - react-error-overlay@5.0.4
 - react-scripts@2.0.4

 - babel-plugin-named-asset-import@0.2.2
 - babel-preset-react-app@5.0.2
 - confusing-browser-globals@1.0.3
 - create-react-app@2.0.2
 - eslint-config-react-app@3.0.3
 - react-app-polyfill@0.1.3
 - react-dev-utils@6.0.3
 - react-error-overlay@5.0.3
 - react-scripts@2.0.3

 - babel-plugin-named-asset-import@0.2.1
 - babel-preset-react-app@5.0.1
 - confusing-browser-globals@1.0.2
 - create-react-app@2.0.1
 - eslint-config-react-app@3.0.1
 - react-app-polyfill@0.1.2
 - react-dev-utils@6.0.2
 - react-error-overlay@5.0.2
 - react-scripts@2.0.2

* Strip flow syntax before any other transform
Plugins run before presets so we can't use the flow preset

* Add informative comment

 - babel-preset-react-app@5.0.0
 - react-app-polyfill@0.1.1
 - react-dev-utils@6.0.1
 - react-error-overlay@5.0.1
 - react-scripts@2.0.1

* Switch back to babel-loader

* Preserve existing caller options. Use Object.assign instead of object spread.

* Updated filename in package.json

* Update comment about cache identifier

* Update macro check to use a regex

* Move macro check regex out of function

* Remove runtime alias hack

* Pass absolute path to preset

* Change comment

* Give a relative path to absolute runtime

* Clean up config

* Tweak again

* Make absolute runtime the default

* Remove runtime package from error overlay

Regenerator is already included by preset-env.

Fixes #4627

 - babel-plugin-named-asset-import@0.2.0
 - babel-preset-react-app@4.0.0
 - confusing-browser-globals@1.0.1
 - create-react-app@2.0.0
 - eslint-config-react-app@3.0.0
 - react-app-polyfill@0.1.0
 - react-dev-utils@6.0.0
 - react-error-overlay@5.0.0
 - react-scripts@2.0.0

* Turn on helpers and test importing something with async/await works

* Compiling babel runtime breaks itself

* Add helpers option to babel plugin with defaults

* Make helpers off by default and on in our configuration

* Hit eject and e2e

* meh

* copy'n'paste

* change again

* Turn off helpers by default in /prod, /dev, /test

* oops

* Spread undefined

* Use object assign not object spread

* Put preset in template since it's needed

* Fix e2e tests

* Add new overrides option

* Add file to package.json

* Create our own loader

* Remove overrides

* We have to use a real babel option

* Add comments

https://github.com/facebook/create-react-app/pull/5046#issuecomment-423501823

* Correct babel dependency compile target

* Correctly compile runtime for dependencies

Closes #4932, Closes #4876

- [x] Utilize webpack 4 development and production modes
- [x] Upgrade webpack dev server
- [x] Webpack 4 compatible release of thread-loader
- [x] Webpack 4 compatible release of HtmlWebpackPlugin
- [x] Webpack 4 compatible release of SwPrecacheWebpackPlugin
- [x] Webpack 4 compatible release of WebpackManifestPlugin
- [x] Update README
- [x] Update WebpackDevServerUtils
- [x] Update InterpolateHtmlPlugin
- [x] Update ModuleScopePlugin
- [x] Update WatchMissingNodeModulesPlugin
- [x] Move UglifyJS options to webpack 4 optimize
- [x] Move InterpolateHtmlPlugin to make it tapable on HtmlWebpackPlugin
- [x] vendor splitting via splitChunks.splitChunks (https://twitter.com/wSokra/status/969633336732905474)
- [x] long term caching via splitChunks.runtimeChunk (https://twitter.com/wSokra/status/969679223278505985)
- [x] Make sure process.env.NODE_ENV is proxied correctly to `react-error-overlay`
- [x] Implicit webpack.NamedModulesPlugin in dev config as it...

Update babel-plugin-macros to 2.2.1.