merge i18n files to one csv file

i18nJson.js

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

const I18N_DIR = path.join('src', 'i18n', 'resources')
const TW_DIR = path.join(I18N_DIR, 'zh-TW')
const EN_DIR = path.join(I18N_DIR, 'en')

const DELIMITER = '^' // 分隔符
const TARGET = 'target.csv'

function getJsonFileList(dirName) {
  const list = fs.readdirSync(dirName)
  return list.filter((name) => name !== 'index.ts')
}

function getParsedData(dirName, fileName) {
  if (!fileExist(dirName, fileName)) {
    return null
  }

  const rawData = fs.readFileSync(path.resolve(dirName, fileName))
  return JSON.parse(rawData)
}

function fileExist(dirName, fileName) {
  return fs.existsSync(path.resolve(dirName, fileName))
}


// --- Main Flow ---

for (const f of getJsonFileList(TW_DIR)) {
  const parsedTwData = getParsedData(TW_DIR, f)
  const parsedEnData = getParsedData(EN_DIR, f)

  for (const key of Object.keys(parsedTwData)) {
    let row = [
      key,
      parsedTwData[key],
      parsedEnData ? parsedEnData[key] : '',
    ].join(DELIMITER)
    row = row + '\n'
    fs.appendFileSync(TARGET, row)
  }
}
console.log('Done! Output to ', TARGET)