Initialize react-dates in index.js

src/app.js

@@ -1,6 +1,11 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 import ReactDOMServer from 'react-dom/server';
+
+// react-dates needs to be initialized before using any react-dates component
+// https://github.com/airbnb/react-dates#initialize
+// NOTE: Initializing it here will initialize it also for app.test.js
+import 'react-dates/initialize';
 import Helmet from 'react-helmet';
 import { BrowserRouter, StaticRouter } from 'react-router-dom';
 import { Provider } from 'react-redux';

src/components/FieldDateInput/DateInput.js

@@ -6,11 +6,6 @@
  */
 import React, { Component } from 'react';
 import { bool, func, instanceOf, shape, string } from 'prop-types';
-
-// react-dates needs to be initialized before using any react-dates component
-// Since this is currently only component using react-dates we can do it here
-// https://github.com/airbnb/react-dates#initialize
-import 'react-dates/initialize';
 import { SingleDatePicker, isInclusivelyAfterDay, isInclusivelyBeforeDay } from 'react-dates';
 import { intlShape, injectIntl } from 'react-intl';
 import classNames from 'classnames';

src/components/FieldDateInput/FieldDateInput.test.js

@@ -1,4 +1,9 @@
 import React from 'react';
+
+// react-dates needs to be initialized before using any react-dates component
+// Since this is currently only component using react-dates we can do it here
+// https://github.com/airbnb/react-dates#initialize
+import 'react-dates/initialize';
 import { renderDeep } from '../../util/test-helpers';
 import { DateInput } from './FieldDateInput';
 

src/components/FieldDateRangeInput/DateRangeInput.js

@@ -6,11 +6,6 @@
  */
 import React, { Component } from 'react';
 import { bool, func, instanceOf, oneOf, shape, string } from 'prop-types';
-
-// react-dates needs to be initialized before using any react-dates component
-// Since this is currently only component using react-dates we can do it here
-// https://github.com/airbnb/react-dates#initialize
-import 'react-dates/initialize';
 import { DateRangePicker, isInclusivelyAfterDay, isInclusivelyBeforeDay } from 'react-dates';
 import { intlShape, injectIntl } from 'react-intl';
 import classNames from 'classnames';

src/components/FieldDateRangeInput/FieldDateRangeInput.test.js

@@ -1,4 +1,9 @@
 import React from 'react';
+
+// react-dates needs to be initialized before using any react-dates component
+// Since this is currently only component using react-dates we can do it here
+// https://github.com/airbnb/react-dates#initialize
+import 'react-dates/initialize';
 import { renderDeep } from '../../util/test-helpers';
 import { LINE_ITEM_NIGHT } from '../../util/types';
 import { DateRangeInput } from './FieldDateRangeInput';