* 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.

* This doesn't look needed anymore

* Remove unnecessary rebuilds

* Convert e2e-installs

* Convert kitchensink tests

* Upgrade npm for kitchensink

* Run e2e-simple in a realistic scenario

* Use npx for everything

* oops

* Separate old Node E2E test

* Try this for old node

* Try to use Yarn in more E2E scripts

* Keep using npm pack

* Maybe this will fix Windows?

* Try this

* Use latest npm in e2e tests

* Keep default npm version in "simple" test

* Try to fix CI by using a version that supports Yarn

* add link to deployment docs after build

* Update printHostingInstructions.js

* Lint against files with old license

* Update e2e-simple.sh

* Update e2e-simple.sh

* oh no

* Use proxy for all request methods other than GET

* Add comment

* Replacing literal 'build' with `buildFolder` variable

* Cleaning up the printHostingInstructions a bit

* Fixing undefined variable

* Added documentation for contributors using windows 10

Hopefully encourages devs on Windows machine to contribute

* corrected the wordings a little

* Port cra.sh development task to javascript

* Port cra.sh development task to javascript

Use absolute path when generating .tgz path

* Extend --scripts-version to include .tar.gz format

* Removal of debug console.log

* added getProxy

getProxy checks proxy settings from process.env.https_proxy or Yarn (NPM) config (.npmrc)

* changed yarn for npm to get https-proxy 

default value for https-proxy is null, not undefined like in yarn

awk splits lines based on spaces, which causes directory names with spaces to end up in other fields. Using a for loop allows us to print from the 9th field onwards instead of just the 9th field.

* fix #2223 - [feature] Implement dotenv-expand to accept variable expansion in dot env files

* add to README TOC

* fix readme

* Update README.md

* add envinfo package, —info flag

* update envinfo to use new duplicates option

Added some more documentation to install the babel-preset-react-app making it more clear on how to get started with this preset outside of create-react-app.

It appears trusty has Yarn ^v1.0.0 now.

So (#3054) shouldn’t be an issue changing to trusty. As Travis CI [precise support](https://blog.travis-ci.com/2017-08-31-trusty-as-default-status) will be dropped in March 2018 .

* Allowing for local "file:" prefixed scripts packages

* Fixing test failure