old_contents: import path from "path"
  import {readdir} from "fs"
  
  import {addLocaleData} from "react-intl"
  import fr from "react-intl/locale-data/fr"
  import en from "react-intl/locale-data/en"
  
  const DEFAULT_LANGUAGE = 'fr'
  
  export function loadTranslations(langDir) {
    addLocaleData(...fr)
    addLocaleData(...en)
  
    var messages = {}
    readdir(langDir, (err, files) => {
      if(err) {
        console.log("Unable to load translation files.", err)
      }
  
      files.forEach(file => {
        messages[path.basename(file, '.json')] = require(path.resolve(langDir, file))
      })
    })
  
    return messages
  }
  
  export function getLocale(acceptLanguage, messages){
    var locale = acceptLanguage ? acceptLanguage.substring(0, 2) : DEFAULT_LANGUAGE //ex: en-US;q=0.4,fr-FR;q=0.2 > en
  
    if(! messages[locale]) {
      locale = DEFAULT_LANGUAGE
    }
    return locale
  }
  
  export function getLocaleMessages(locale, messages){
    return messages[locale]
  }
  
new_contents: import path from "path"
  import {readdir} from "fs"
  
  import {addLocaleData} from "react-intl"
  
  const DEFAULT_LANGUAGE = 'fr'
  
  export function loadTranslations(langDir) {
    var messages = {}
    readdir(langDir, (err, files) => {
      if(err) {
        console.log("Unable to load translation files.", err)
      }
  
      var possibleLocale
      files.forEach(file => {
        possibleLocale = path.basename(file, '.json')
        addLocaleData(require(`react-intl/locale-data/${possibleLocale}`))
        messages[possibleLocale] = require(path.resolve(langDir, file))
      })
    })
  
    return messages
  }
  
  export function getLocale(acceptLanguage, messages){
    var locale = acceptLanguage ? acceptLanguage.substring(0, 2) : DEFAULT_LANGUAGE //ex: en-US;q=0.4,fr-FR;q=0.2 > en
  
    if(! messages[locale]) {
      locale = DEFAULT_LANGUAGE
    }
    return locale
  }
  
  export function getLocaleMessages(locale, messages){
    return messages[locale]
  }
  
subject: Load detected react-intl locale data