Drill 22: Make it smaller — Environment and config

Write a smaller version of the example that keeps the core idea.

Intermediate 5 min read Lesson 222 of 300 Challenge included

What you will be able to do

Write a smaller version of the example that keeps the core idea.

Practice task

Write a smaller version of the example that keeps the core idea.

config.tsTypeScript

import 'dotenv/config'

function required(name: string): string {
  const value = process.env[name]
  if (!value) {
    throw new Error('Missing required environment variable: ' + name)
  }
  return value
}

export const config = {
  port: Number(process.env.PORT ?? 3000),
  databaseUrl: required('DATABASE_URL'),
  logLevel: process.env.LOG_LEVEL ?? 'info',
}

export function redactedConfig() {
  const { databaseUrl, ...rest } = config
  return rest
}

console.log(redactedConfig())

Your turn

Write your answer

Easy

Write a smaller version of the example that keeps the core idea.

TEXT · starter

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Next: Drill 22: Improve it — Databases with Postgres

Lesson 222 of 300 · 0% of course