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next.js/examples/with-react-intl/server.js
Tim Neutkens 9c4eefcdbf
Add prettier for examples directory (#5909)
* Add prettier for examples directory

* Fix files

* Fix linting

* Add prettier script in case it has to be ran again
2018-12-17 17:34:32 +01:00

57 lines
2 KiB
JavaScript

// Polyfill Node with `Intl` that has data for all locales.
// See: https://formatjs.io/guides/runtime-environments/#server
const IntlPolyfill = require('intl')
Intl.NumberFormat = IntlPolyfill.NumberFormat
Intl.DateTimeFormat = IntlPolyfill.DateTimeFormat
const { readFileSync } = require('fs')
const { basename } = require('path')
const { createServer } = require('http')
const accepts = require('accepts')
const glob = require('glob')
const next = require('next')
const port = parseInt(process.env.PORT, 10) || 3000
const dev = process.env.NODE_ENV !== 'production'
const app = next({ dev })
const handle = app.getRequestHandler()
// Get the supported languages by looking for translations in the `lang/` dir.
const supportedLanguages = glob
.sync('./lang/*.json')
.map(f => basename(f, '.json'))
// We need to expose React Intl's locale data on the request for the user's
// locale. This function will also cache the scripts by lang in memory.
const localeDataCache = new Map()
const getLocaleDataScript = locale => {
const lang = locale.split('-')[0]
if (!localeDataCache.has(lang)) {
const localeDataFile = require.resolve(`react-intl/locale-data/${lang}`)
const localeDataScript = readFileSync(localeDataFile, 'utf8')
localeDataCache.set(lang, localeDataScript)
}
return localeDataCache.get(lang)
}
// We need to load and expose the translations on the request for the user's
// locale. These will only be used in production, in dev the `defaultMessage` in
// each message description in the source code will be used.
const getMessages = locale => {
return require(`./lang/${locale}.json`)
}
app.prepare().then(() => {
createServer((req, res) => {
const accept = accepts(req)
const locale = accept.language(accept.languages(supportedLanguages)) || 'en'
req.locale = locale
req.localeDataScript = getLocaleDataScript(locale)
req.messages = dev ? {} : getMessages(locale)
handle(req, res)
}).listen(port, err => {
if (err) throw err
console.log(`> Ready on http://localhost:${port}`)
})
})