react-mapfilter/bin/build_messages.js

A React Component for viewing and filtering GeoJSON

#!/usr/bin/env node

const fs = require('fs')
const path = require('path')
const glob = require('glob')
const mkdirp = require('mkdirp')

const MESSAGES_PATTERN = path.join(__dirname, '../build/messages/**/*.json')
const LANG_DIR = path.join(__dirname, '../locales/')

// Aggregates the default messages that were extracted from the example app's
// React components via the React Intl Babel plugin. An error will be thrown if
// there are messages in different components that use the same `id`. The result
// is a flat collection of `id: message` pairs for the app's default locale.
let defaultMessages = glob.sync(MESSAGES_PATTERN)
    .map((filename) => fs.readFileSync(filename, 'utf8'))
    .map((file) => JSON.parse(file))
    .reduce((collection, descriptors) => {
      descriptors.forEach(({id, defaultMessage, description}) => {
        if (collection.hasOwnProperty(id)) {
          throw new Error(`Duplicate message id: ${id}`)
        }

        collection[id] = {
          message: defaultMessage,
          description: description
        }
      })

      return collection
    }, {})

mkdirp.sync(LANG_DIR)

fs.writeFileSync(LANG_DIR + 'en.json', JSON.stringify(defaultMessages, null, 2))