truffle.js

const fs = require('fs')
const { merge } = require('lodash')
const configDefaults = require('./truffle.js.default')


/**
 * Reading of config directory
 * @param  {String} configSection config section/dir name
 * @return {Array}
 */
const readConfigDir = configSection => (
  fs.readdirSync(`./config/${configSection}`)
    .filter ( file => /\.js/.test(file) )
    .map    ( file => file.replace(/\.js$/i, '') )
)

/**
 * Building part of config
 * @param  {String} configSection         config section/dir name
 * @param  {Object} configSectionDefaults config section defaults
 * @return {Object}
 */
const buildConfigPart = (configSection, configSectionDefaults) => (
  readConfigDir(configSection).reduce(
    (configPart, key) => {
      configPart[configSection][key] = merge(
        {},
        configSectionDefaults,
        require(`./config/${configSection}/${key}`)
      )
      return configPart
    },
    {
      [configSection]: {}
    }
  )
)

const configAssigned = merge(
  {},
  configDefaults,
  buildConfigPart('networks', configDefaults.rpc)
)


module.exports = configAssigned