MissingEnvVarsError.js

'use strict'

const util = require('util')

function MissingEnvVarsError (allowEmptyValues, dotenvFilename, exampleFilename, missingVars, error) {
  const errorMessage = `The following variables were defined in ${exampleFilename} but are not present in the environment/kub.deployment:\n  ${missingVars.join(', ')}
Make sure to add them to ${dotenvFilename} or directly to the environment.`
  const allowEmptyValuesMessage = !allowEmptyValues ? `If you expect any of these variables to be empty, you can use the allowEmptyValues option:
require('dotenv-safe').config({
  allowEmptyValues: true
});` : ''
  const envErrorMessage = error ? `Also, the following error was thrown when trying to read variables from  ${dotenvFilename}:\n${error.message}` : ''
  Error.call(this)
  this.name = this.constructor.name
  this.missing = missingVars
  this.example = this.sample = exampleFilename
  this.message = [errorMessage, allowEmptyValuesMessage, envErrorMessage]
    .filter(Boolean)
    .join('\n\n')
  Error.captureStackTrace(this, this.constructor)
}

util.inherits(MissingEnvVarsError, Error)
module.exports = MissingEnvVarsError