All tests are failing

[felquis]

When I run npm test I saw this messages

jest-haste-map: Watchman crawl failed. Retrying once with node crawler.
  Usually this happens when watchman isn't running. Create an empty `.watchmanconfig` file in your project's root folder or initialize a git or hg repository in your project.
  Error: Watchman error: unknown command watch-project. Make sure watchman is running for this project. See https://facebook.github.io/watchman/docs/troubleshooting.html.
No tests found related to files changed since last commit.

If I uninstall watchman with brew uninstall watchman then installing it again fixed the problem, but it does't throw erros, but the tests fail with

Couldn't find preset "es2015" relative to directory "/Users/felquis/project"

This is happening for any app created with create-react-app right now!

[felquis]

Removed .babelrc in the parent directory as suggested here facebook/create-react-app#949 (comment)

Now jest said there was no files to test, I figured out files with "Example" key word were ignored, renamed EveryExample.test.js to Every.test.js and the file was added to the tests.

[felquis]

Each test file is failing because Cannot find module 'extsprintf'

[felquis]

I fixed a syntax error in KeyDownExample.test.js and EveryExample.test.js, now extsprintf isn't the problem.

[felquis]

The only problem now is that we need to mock some resources! https://facebook.github.io/jest/docs/manual-mocks.html

investigation will continue at #23