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const rollup = require('rollup')const configFactory = require('./rollup.config')const fs = require('fs')const util = require('util')const path = require('path')const { ncp } = require('ncp')
const { promisify } = util
const promisifyReadDir = promisify(fs.readdir)const promisifyReadFile = promisify(fs.readFile)const promisifyWriteFile = promisify(fs.writeFile)
const localeNameRegex = /\/\/ (.*) \[/const formatName = n => n.replace(/\.js/, '').replace('-', '_')
const localePath = path.join(__dirname, '../src/locale')
async function build(option) {  const bundle = await rollup.rollup(option.input)  await bundle.write(option.output)}
async function listLocaleJson(localeArr) {  const localeListArr = []  await Promise.all(localeArr.map(async (l) => {    const localeData = await promisifyReadFile(path.join(localePath, l), 'utf-8')    localeListArr.push({      key: l.slice(0, -3),      name: localeData.match(localeNameRegex)[1]    })  }))  promisifyWriteFile(path.join(__dirname, '../locale.json'), JSON.stringify(localeListArr), 'utf8')}
(async () => {  try {    /* eslint-disable no-restricted-syntax, no-await-in-loop */    // We use await-in-loop to make rollup run sequentially to save on RAM    const locales = await promisifyReadDir(localePath)    for (const l of locales) {      // run builds sequentially to limit RAM usage      await build(configFactory({        input: `./src/locale/${l}`,        fileName: `./locale/${l}`,        name: `dayjs_locale_${formatName(l)}`      }))    }
    const plugins = await promisifyReadDir(path.join(__dirname, '../src/plugin'))    for (const plugin of plugins) {      // run builds sequentially to limit RAM usage      await build(configFactory({        input: `./src/plugin/${plugin}/index`,        fileName: `./plugin/${plugin}.js`,        name: `dayjs_plugin_${formatName(plugin)}`      }))    }
    build(configFactory({      input: './src/index.js',      fileName: './dayjs.min.js'    }))
    await promisify(ncp)('./types/', './')
    // list locales    await listLocaleJson(locales)  } catch (e) {    console.error(e) // eslint-disable-line no-console  }})()