Utilities for FormatJS -> poEdit -> Webpack

json2pot.js

/**
 * Quick converter from JSON by FormatJS to POT for translation utilities.
 * stdin: JSON / stdout: POT
 */

const potHeader = `msgid ""
msgstr ""
"Project-Id-Version: JV-Campus skanda\\n"
"Language: en_US\\n"
"MIME-Version: 1.0\\n"
"Content-Type: text/plain; charset=UTF-8\\n"
"Content-Transfer-Encoding: 8bit\\n"

`

;(() => {
  let jsonStr = ''
  process.stdin.on('data', (data) => {
    jsonStr = data.toString()
  })

  process.stdin.on('end', () =>
    process.stdout.write(convert(JSON.parse(jsonStr)))
  )

  const convert = (json) => {
    let result = ''

    for (const [, value] of Object.entries(json)) {
      // Replace ids by FormatJS with original message, for convinience in translation.
      // (It must be reveted by bundlers)
      result += `msgid "${value.defaultMessage}"\n`
      result += `msgstr ""\n`
      result += `\n`
    }
    return potHeader + result
  }
})()

po-loader.js

/**
 * A Webpack Loader to load translated PO files
 */

const crypto = require('crypto')

module.exports = (source) => {
  // Add a line break to be matched with RegExp
  source += '\n'

  const result = {}
  for (let [, id, str] of source.matchAll(
    /msgid "([\s\S]*?)"[\r\n]msgstr "([\s\S]*?)"[\r\n][\r\n]/g
  )) {
    // Remove double quotations and line break to concat long messages
    // (Long messages are separated by translation utilities as double quoted multi lines)
    id = id.replace(/"\n"/g, '')
    str = str.replace(/"\n"/g, '')

    // Replace ids with SHA512-ed string
    // (It reverts replacement in json2pot.js)
    const hashId = crypto
      .createHash('sha512')
      .update(id, 'utf8')
      .digest('base64')
      .substring(0, 6)
    result[hashId] = str
  }
  return `module.exports = ${JSON.stringify(result)}`
}