* Add restricted globals package

* Use new package in eslint-config

* Add eslint-restricted-globals dependency

* Fixes

* Update dependencies

* Update test and README

* Use jest

* tweaks

* Add lint/test to CI

* Fix lint

* Cheap perf gains

* Whoopsie

Add preflight check to guard against wrong versions of webpack/eslint/jest higher up the tree (#3771)

* Run real scripts in local development

* Add preflight check warning

* I know what I am doing

* Move preflight check into individual scripts

This ensures we don't try to filter NODE_PATH twice, accidentally removing the now-absolute path.

* Slightly tweak the wording

* Fix lint

* Provide better defaults

* Let babel determine features to compile

* meh

* Remove setting of BABEL_ENV

* Revert "Remove setting of BABEL_ENV"

This reverts commit ee2db707.

* Set browsers to ie9

* Updating ESlint to ^4.15.0 and adding new rules to config

* remoning style rule and auto fixing breakages from new rules

* Removing implicit-arrow-linebreak style rule

* adding new rule to eslint config project

* updating react scripts eslint version

* Pinning version.

* Changing getter-return to warn

* Update package.json

* Update .eslintrc

* Bump eslint-plugin-jsx-a11y

* Update index.js

* Update index.js

* Update package.json

* Don't use links for non-linky things

* Update dependencies in react-scripts

* Add first pass of working dependencies for babel-preset-react-app and react-scripts

* Bump more dependency versions

* Adjust more versions and edit fix options

* Restore functionality of old preset

* Disable Uglify in iframe webpack

* Apply prettier

* Re-enable cache in dev and clean deps

* Lock packages and move babel/core to dep in preset

* Bump babel-jest

* Re-enable uglify

* Nest forceAllTransforms correctly in webpack config

* Install babel-core bridge for jest

* Add jest-cli and babel-core bridge to make tests in react-error-overlay pass

* Re-enable transform-dynamic-import

* Add dynamic import syntax support back

* Use new babel in kitchensink

* Transform modules in test

* Revert "Transform modules in test"

This reverts commit 539e46a1.

* Attempt fix for ejected tests

* try this

* Add regenerator back

* Bump babel deps to beta.34

...

* update jest to 21.0.2 to support watchPathIgnorePatterns configuration

* update jest to 21.1.0

* Try bumping Jest

* Bump babel-jest

* Try to debug weird CI failure

* Remove debug code

* Bump other Jest packages

* ffs

* temp

* Revert "temp"

This reverts commit 62aec9ac.

* Disables navigateFallback and updates the README

* Typos

* Updated a URL in a comment.

* add experimental babel-plugin-macros support

closes #2730

This will remain undocumented until the brave have tried it in the wild.

**Test Plan:**

There's currently no established way to test changes to
`babel-preset-react-app`. But I did create
[`unmaintained-react-scripts-babel-macros`](https://www.npmjs.com/package/unmaintained-react-scripts-babel-macros)
[a while back](https://github.com/facebookincubator/create-react-app/issues/2730#issuecomment-328153982)
and it worked well.

* Pin the version

 - babel-preset-react-app@3.1.1
 - create-react-app@1.5.0
 - eslint-config-react-app@2.1.0
 - react-dev-utils@5.0.0
 - react-error-overlay@4.0.0
 - react-scripts@1.1.0

* Test Node 9 on CI

* Oops

* Add warning when HOST environment variable is set (#3719)

* Improve HOST environment variable warning message

* Adjust text and message

Closes #3719

* Always include destructuring transform

* Fix lint

* Bump detect-port-alt

* Bump again

All FB open source projects including this one enforce [our code of conduct](https://code.facebook.com/pages/876921332402685/open-source-code-of-conduct), but I just realized we haven't explicitly linked to it from a Markdown file. So I'm doing just that.

* This is a good default.
Adds approx 4 seconds to install time, but can save some headaches.

* Add no lockfile for add, too

* Switch to Yarn Workspaces

* Feedback

* Move flowconfig

* Use publish script

* Keep git status check

* Fix Flow without perf penalty

* Remove Flow from package.json "test"

* Try running it from script directly (?)

* Try magic incantations

* lol flow COME ON

* Try to skip Flow on AppVeyor

* -df

* -df

* -df

* Try to fix CI

* Revert unrelated changes

* Update CONTRIBUTING.md

It's been here long enough.