code: function readFromEnvFile() {
    try {
      // .env file should be in root directory
      const data = require('fs').readFileSync(require('path').join(__dirname, '../../.env'), 'utf8')
  
      const env = {}
      data.split('\n').filter((v) => {
        return v !== ''
      }).filter((v) => {
        return v.indexOf('#') === -1
      }).forEach((v) => {
        const splitPosition = v.indexOf('=')
        if (splitPosition === -1) {
          return
        }
        // only first '=' will be splitted
        const key = v.slice(0, splitPosition).trim()
        const value = v.slice(splitPosition + 1).trim()
        env[key] = value
      })
      return env
    } catch (err) {
      throw err
    }
  }
docs: Loads environment variables from .env file
  check for the missing environment variables at start
  throw exception if .env file doesnot exist
  @returns env