index.js

var ModuleMap = require('module-map')(__dirname)
var path = require('path')
var fs = require('fs')
var sh = require('shelljs')
var TmpDir = require('quick-tmp')('compile-module-map')
var spawn = require('child_process').spawn

module.exports = function(dir) {
  // copy dir
  // kill
  // rerun with doreplace env var set
  // if doreplace replace original file with compiled
  var env = process.env
  var BUILD_DIR = dir + '/build'
  var TMP_BUILD_DIR = TmpDir()
  var DIR = dir
  var MAP_REPLACE = env.MAP_REPLACE

  MAP_REPLACE ? replace() : prepare()

  function prepare() {
    sh.rm('-rf', BUILD_DIR)
    sh.rm('-rf', TMP_BUILD_DIR)
    sh.cp('-R', DIR + '/*', TMP_BUILD_DIR)
    sh.mv(TMP_BUILD_DIR, BUILD_DIR)
    spawn(process.execPath, ['./compile.js'], {
      cwd: BUILD_DIR,
      stdio: 'inherit',
      env: {
        MAP_REPLACE: 1
      }
    }).on('close', function(errCode) {
      process.exit(errCode)
    })
  }

  function replace() {
    ModuleMap(function(src) {
      return src.replace('REPLACEME', 'REPLACED')
    })

    ModuleMap.after(function(src, filename) {
      console.log(arguments)
      fs.writeFileSync(filename, src)
      return src
    })


    require('./index.js')
  }
}