index.js

'use strict';

require("babel-polyfill")

var fs = require('fs')
var debug = require('debug')('runkoa')
var path = require('path')

var is_npm_v3 = /^[3|4]/.test(require('child_process').execSync('npm -v').toString())

/**
  cli加载的preset是一样的

  而引用require的时候

  - npm 3是它的上级模块
  - npm 2是当前文件目录下的node_modules\
 *
 */
module.exports = function (entry, is_cli) {
  if (is_cli === true) {
    get_dirname_in_node_modules()
  } else {
    if (is_npm_v3 === false) {
      get_dirname_in_node_modules()
    } else {
       get_dirname_in_parent()
    }
  }

  var current_path = process.cwd();
  var f = path.resolve(current_path, '/bin/www')

  if (is_cli == true && entry && /^\//.test(entry)){
    f = entry
  } else {
    f = entry
  }

  var is_exist = fs.existsSync(f)

  if (is_exist === false) {
    return console.error('runkoa entry file is not exist, please check it');
  }

  require(f) // this is es7 - gets transpile
}

function get_dirname_in_node_modules(){
  var dir =  path.resolve(__dirname, 'node_modules/')
  var plugin_base = 'babel-plugin-'
  console.log('3babel presets path = ' + dir)
  // npm 3.x set babel in entry file
  require('babel-core/register')({
    plugins: [require('babel-plugin-add-module-exports'), require('babel-plugin-transform-es2015-modules-commonjs')],
    presets: [require('babel-preset-es2015-node5'), require('babel-preset-stage-3')],
    babelrc: false
  })
}

function get_dirname_in_parent(){
  var dir =  __dirname.replace('runkoa', '')
  var plugin_base = 'babel-plugin-'

  if(is_npm_v3 === true && process.env.RUNKOA_TEST){
    dir = path.resolve(dir, 'runkoa/node_modules/')
  }

  debug('2babel presets path = ' + dir)

  // npm 2.x set babel in entry file
  require('babel-core/register')({
    plugins: [require('babel-plugin-add-module-exports'), require('babel-plugin-transform-es2015-modules-commonjs')],
    presets: [require('babel-preset-es2015-node5'), require('babel-preset-stage-3')],
    babelrc: false
  })
}