Extracting all strings from react-intl to single json file

translator.js

console.log('Extracted all strings from program ', '\n')

import * as fs from 'fs'
import { sync as globSync } from 'glob'
import { sync as mkdirpSync } from 'mkdirp'

const filePattern = './build/messages/**/*.json'
const outputLanguageDataDir = './build/locales/'

console.log('Piping followings ids :')
const defaultMessages = globSync(filePattern)
  .map(filename => fs.readFileSync(filename, 'utf8'))
  .map(file => JSON.parse(file))
  .reduce((collection, descriptors) => {
    descriptors.forEach(({ id, defaultMessage }) => {
      if (collection.hasOwnProperty(id)) {
        throw new Error(`Duplicate message id: ${id}`)
        console.log(`*** ERROR: Duplicate ID found: ${id} ***`.bold.red)
        console.log(`Look in file ${filename} to find duplicate`.red)
      }
      collection[id] = defaultMessage
      console.log('-', id)
    })

    return collection
  }, {})

mkdirpSync(outputLanguageDataDir)

console.log('\n', 'Inserting all ids into single file', '\n')
fs.writeFileSync(
  outputLanguageDataDir + 'data.json',
  `{ "en": ${JSON.stringify(defaultMessages, null, 2)} }`
)
console.log('Build : Language done')