saleor-dashboard/src/storybook/Decorator.tsx

import { ExternalAppProvider } from "@saleor/apps/components/ExternalAppContext";
import { Locale, RawLocaleProvider } from "@saleor/components/Locale";
import { ThemeProvider } from "@saleor/macaw-ui";
import themeOverrides from "@saleor/themeOverrides";
import React from "react";
import { IntlProvider } from "react-intl";
import { BrowserRouter } from "react-router-dom";

import { ApolloMockedProvider } from "../../testUtils/ApolloMockedProvider";
import { Provider as DateProvider } from "../components/Date/DateContext";
import MessageManagerProvider from "../components/messages";
import { TimezoneProvider } from "../components/Timezone";
import { APP_MOUNT_URI } from "../config";

export const Decorator = storyFn => (
  <ApolloMockedProvider>
    <IntlProvider defaultLocale={Locale.EN} locale={Locale.EN}>
      <RawLocaleProvider
        value={{
          locale: Locale.EN,
          setLocale: () => undefined
        }}
      >
        <DateProvider value={+new Date("2018-08-07T14:30:44+00:00")}>
          <TimezoneProvider value="America/New_York">
            <ThemeProvider overrides={themeOverrides}>
              <BrowserRouter basename={APP_MOUNT_URI}>
                <ExternalAppProvider>
                  <MessageManagerProvider>
                    <div
                      style={{
                        padding: 24
                      }}
                    >
                      {storyFn()}
                    </div>
                  </MessageManagerProvider>
                </ExternalAppProvider>
              </BrowserRouter>
            </ThemeProvider>
          </TimezoneProvider>
        </DateProvider>
      </RawLocaleProvider>
    </IntlProvider>
  </ApolloMockedProvider>
);
export default Decorator;