react-admin: translation is broken ?

What you were expecting: native ra-language need to show translation not the keys.

What happened instead: All keys “ra.****” are not traducted

// in App.js
const messages = {
    fr: frenchMessages,
    en: englishMessages,
    de: germanMessages,
    it: italianMessages,
};
const i18nProvider = locale => messages[locale];

if (!localStorage.getItem('locale')){
    localStorage.setItem('locale', resolveBrowserLocale());
}

[...]

render() {
        return (
            <Admin
                locale={localStorage.getItem('locale')}
                appLayout={CustomLayout}
                i18nProvider={i18nProvider}
                customReducers={{ theme: themeReducer }}
                dashboard={Dashboard}
                menu={Menu}
                customRoutes={customRoutes}
                authProvider={authProvider}
                dataProvider={dataProvider}
            >



// in i18n/fr.js

// import frenchMessages from 'ra-language-french'; // don't work
import frenchDashboardMessages from './fr/DashboardMessages' // ok all is translated
import frenchGlobalMessages from './fr/GlobalMessages' // ok all is translated
import frenchMenuMessages from './fr/MenuMessages' // ok all is translated
import frenchConfigurationViewMessages from './fr/ConfigurationViewMessages' // ok all is translated
import frenchMessages from './fr/RaMessages' // don't work copy of ra-language-french

export default {
    ...frenchMessages,
    ...frenchDashboardMessages,
    ...frenchGlobalMessages,
    ...frenchMenuMessages,
    ...frenchConfigurationViewMessages,
    resources: {
        [...]
    }
}

Other information: linked to #3000

got the same problem.

clear navigator cache -> no effect rm -rf node_modules -> no effect. npm cache rm -> no effect rm -rf ~/.npm/* -> no effect rm -rf ~/.cache/* -> no effect rm -rf ~/.yarn/* -> no effect

sudo npm install -g npm -> updated but no effect sudo npm install -g yarn -> updated but no effect

try to lunch with npm start or yarn start and nothing seemes to work…

Environment

• React-admin version: 2.8.1
• Last version that did not exhibit the issue (if applicable): 2.7.1
• React version: 16.8.2
• Browser: all
• Stack trace (in case of a JS error): no js error