There’s a common tool included in Hadoop that also has a `yarn` command,
which created issues for users who had Hadoop installed:
* facebook#1257
* facebook#1363

Yarn also installs the command under `yarnpkg` alias (added in
yarnpkg/yarn@cefa9a3)
so we can use `yarnpkg` instead of `yarn` to make it more reliable.

This has no effect on users who don't have Hadoop installed, but those
who have won't see errors from falsely detecting Hadoop Yarn as Yarn
the package manager, and they can now also install Yarn to make use of
our Yarn support without the Hadoop Yarn interfering.

 - create-react-app@1.0.3
 - react-scripts@0.8.5

Array.forEach is passed the following parameters:

currentValue
    The current element being processed in the array.
index
    The index of the current element being processed in the array.
array
- https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach

console.log takes multiple arguments. We only want to print the first one, the actually message.

* Document Flow support

Projects created by Create React App use the `babel-preset-react` which includes
Flow babel plugins which introduces new syntax. This is important for users to know
as it causes what used to be syntax errors to be silently suppressed because they're
valid type annotations in Flow. For example if a user accidentally has `[foo: 'bar']`,
Babel will silently convert it to `[foo]`.

* Make it a bit clearer

)

* Use a more sophisticated template for end-to-end testing.

* Not publish integration tests to npm

* Use "commander" for  cli argv handling

* Handle different scripts version forms and exits without a name given

* Prepare the commands for testing with a template

* Fix dev "template" path

* Add various features to test

* Test various features separately

* Test language features

* Comment unused e2e.sh lines

* Add "development" tests

* Test environment variables

* Test webpack plugins

* Replace kitchensink README

* Switch integration tests from jest to mocha

* Use `fs-extra`

* Use the correct folders

* Do some cleanup

* Print a better message for `--template`

* Test `npm start` with and without https

* Separate fast e2e testing from kitchensink testing

* Hide `--internal-testing-template` (former `--template`) CLI option

for consistency :)

* Add causes of dev server not detecting changes

Add causes of `npm start` not detecting changes to Troubleshooting chapter of User Guide

* Reworded slightly

* Update README.md

…ebook#1437)

* Added Rails link to User Guide

* docs: unify sections for rails and node backend integration

* docs: fix faulty link and indentation

… yarn (facebook#1441)

Per final comment in facebook#372

`Snapshot rendering should actually be pretty stable / useable after React 15.4.1.
See this post for more info.`

…k#1458)

ATM if react-scripts is (erroneously) declared in `dependencies` instead of `devDependencies` or isn't declared at all, the `eject` script will fail half-way. This change makes it more robust, react-scripts will be removed from either, if present.

* E2E: run tests when react is ready

* Entangle e2e with callbacks

* Remove unused e2e lines

- code style

)

* Reflect websocket proxy support on README

* Add 'the'

* Add ESLint config for VS Code users

* Update VSC ESLint note to a better solution 

Update VSC ESLint note to a better solution as discussed in Pull Request

Updated README.md to refer to the current rebranding.

* clarifying the use of custom environment variables

* Tweak

* Make all vars accessiable in index.html

* Fix wrong env provieded to DefinePlugin

* Separate results from getClientEnvironment

* The `string` should be object instead of string

* Fix accessing wrong field

* Changed variables naming to `raw` and `stringified`

* Remove trailing commas

…ok#1504)

* Add `PUBLIC_URL` env variable for advanced use (facebook#937)
* Add support for `PUBLIC_URL` env variable
* Remove unnecessary duplications
* Simplify served path choice logic
* Honor PUBLIC_URL in development
* Add e2e tests

Enables serving static assets from specified host.

* Fix paths in CSS files when homepage is set to "./"

In the production build, ExtractTextPlugin is used to generate a separate CSS file instead of injecting style through JavaScript. This plugin does not work well by default with nested output structure. To fix it, we give it a relative publicPath pointing to the build folder.

* Add section in README to explain how to make builds deployable anywhere

* Apply review requested change

* Apply review changes 2

* Add Advanced Configuration section

* Reference package.json instead

* Add HOST, HTTPS, and CI

* Switch wording from Amazon to a CDN

* Add test runner comment

* Add top-level README link

* Simplify wording

* Link to relevant docs

* Link to apps

* Add .env link

* Simpler links

* Add a CI flag note

* Make build exit with error code when interrupted

This addresses issue facebook#1493.

Current behavior is that `npm run build` exits code 0 without creating a bundle when interrupted. This change makes the build script catch catchable interruptions and exit with the appropriate error code.

* Better error messages for kill signals

* Don't catch SIGINT

Ctrl+C should exit silently, and already produces a non-zero exit code when sent to the console while `npm run build` is running. Exit code 0 is produced if SIGINT is sent directly to the `node build.js` process, but this is unlikely to happen. A SIGINT handler in `build.js` will also be triggered by Ctrl+C in the console, potentially producing unnecessary noise.

* Style fix

* No changes needed to build.js

Problem is coming from the parent process, `react-scripts`

* Make react-scripts script handle signals

* Clarify context

* Add test cases to evaluate increased CI time

* Add positive test cases

* Add negative cases

* Test default behavior

* Exit on failure

* Fix test

* fix: add yarn gitignores to template

* fix: add yarn gitignores to root

* fix: add wildcard to npm-debug.log ignore

* Upgrade dependencies

* Re-add caret

 - babel-preset-react-app@2.1.0
 - create-react-app@1.0.4
 - eslint-config-react-app@0.5.1
 - react-dev-utils@0.5.0
 - react-scripts@0.9.0

* Upgrade webpack

* Address more webpack v2 ...

* Update html-webpack-plugin

* Remove LoaderOptionsPlugin from dev config

* ExtractTextPlugin still uses webpack 1 syntax
... and doesn't support complex options (yet)

* Grammar nit

* Update extract text webpack plugin

* - Remove webpack.LoaderOptionsPlugin
- Update deps

* Lerna hoists packages

* Update extract-text-webpack-plugin

* Update webpack-dev-server

* Remove imports for the tests

* stop removing babelrc

* Suggest jest-enzyme for simplifying test matchers

* Update README.md

* Update README.md

* Add SASS support documentation facebook#1007

* Change SASS section title to more generic label

* Fix link in Table of Contents

* Chain build-css with watch-css script, fix typos

* Update Sass and Less naming style

* Fix wording, remove offensive words

* Slightly rewite

The `test` command fails with multiple arguments when given a unary operator such as '-e'. Add a function that can test one or more files by looping over all files.

* change npm to yarn command

* Keep npm primary option

…-app (facebook#1313)

* reduxjs/redux#2004 List features beyond ES6 supported by create-react-app

* Add more info

* added how to disable autoprefix feature in doc

* Just link to the doc

* Tweak syntax doc

* Shorter version