trezor-wallet/src/support/ConnectedIntlProvider.js

/* @flow */
import * as React from 'react';
import { connect } from 'react-redux';

import type { MapStateToProps } from 'react-redux';
import type { State } from 'flowtype';

import { IntlProvider, addLocaleData } from 'react-intl';

import en from 'react-intl/locale-data/en';
import cs from 'react-intl/locale-data/cs';
import bn from 'react-intl/locale-data/bn';
import de from 'react-intl/locale-data/de';
import el from 'react-intl/locale-data/el';
import es from 'react-intl/locale-data/es';
import fr from 'react-intl/locale-data/fr';
import id from 'react-intl/locale-data/id';
import it from 'react-intl/locale-data/it';
import ja from 'react-intl/locale-data/ja';
import nl from 'react-intl/locale-data/nl';
import pl from 'react-intl/locale-data/pl';
import pt from 'react-intl/locale-data/pt';
import ru from 'react-intl/locale-data/ru';
import uk from 'react-intl/locale-data/uk';
import zh from 'react-intl/locale-data/zh';

addLocaleData([...en, ...cs, ...bn, ...de, ...el, ...es, ...fr, ...id, ...it, ...ja, ...nl, ...pl, ...pt, ...ru, ...uk, ...zh]);

type OwnProps = {
    children: React.Node
}

type StateProps = {
    locale: string,
    messages: { [string]: string }
}

type Props = StateProps & OwnProps;

const mapStateToProps: MapStateToProps<State, OwnProps, StateProps> = (state: State): StateProps => ({
    locale: state.wallet.language,
    messages: state.wallet.messages,
});

const ReactIntlProvider = ({ children, locale, messages }: Props) => (
    <IntlProvider
        key={locale} // forces rerender IntlProvider when lang file is downloaded
        locale={locale}
        messages={messages}
    >
        {children}
    </IntlProvider>
);

export default connect(mapStateToProps, null)(ReactIntlProvider);