builoder.js

const { join } = require('path')
const { writeFile, unlink } = require('fs')

const functions = [
  { p: join(__dirname, 'handlers', 'user', 'confirm', 'index.js'), o: join(__dirname, 'build', 'userConfirm.js') },
  { p: join(__dirname, 'handlers', 'user', 'delete', 'index.js'), o: join(__dirname, 'build', 'userDelete.js') },
  { p: join(__dirname, 'handlers', 'user', 'edit', 'index.js'), o: join(__dirname, 'build', 'userEdit.js') },
  { p: join(__dirname, 'handlers', 'user', 'get', 'index.js'), o: join(__dirname, 'build', 'userGet.js') },
  { p: join(__dirname, 'handlers', 'user', 'signin', 'index.js'), o: join(__dirname, 'build', 'signin.js') },
  { p: join(__dirname, 'handlers', 'user', 'signup', 'index.js'), o: join(__dirname, 'build', 'signup.js') },
  /* ... */
  { p: join(__dirname, 'handlers', 'billing', 'stripe', 'webhook', 'index.js'), o: join(__dirname, 'build', 'stripeWebhook.js') },
  { p: join(__dirname, 'handlers', 'admin', 'marketing', 'email', 'send.js'), o: join(__dirname, 'build', 'newsSend.js') },
  { p: join(__dirname, 'handlers', 'admin', 'marketing', 'push', 'send.js'), o: join(__dirname, 'build', 'pushSend.js') },
  { p: join(__dirname, 'handlers', 'admin', 'add-admin', 'index.js'), o: join(__dirname, 'build', 'addAdmin.js') }
]

;(() => {
  for (const func of functions) {
    require('@zeit/ncc')(func.p, {
      cache: false,
      externals: [],
      filterAssetBase: process.cwd(),
      minify: true,
      sourceMap: false,
      sourceMapBasePrefix: '../',
      sourceMapRegister: false,
      watch: false,
      v8cache: false,
      quiet: false,
      debugLog: false
    }).then(({ code, map, assets }) => {
      unlink(func.o, (err) => {
        if (err) console.log(err)
        writeFile(func.o, code, (err) => {
          if (err) console.log(err)
          console.log(`Wrote ${func}`)
        })
      })
    })
  }
})()