Reading Configuration
Access and retrieve configuration values in your application using standard patterns and best practices.
Reading Config
Reading Configuration Values
Use standard methods to access configuration values across different parts of your application. These patterns ensure you can dynamically respond to environment-specific settings.
Node.js
const configValue = process.env.MY_APP_SETTING;
console.log('Current value:', configValue);
Use process.env to access environment variables in Node.js applications.
Client-Side JS
const mySetting = import.meta.env.VITE_MY_SETTING;
console.log('Current value:', mySetting);
Access special environment variables in Vite-based projects.
Access Patterns
Dynamic Access
const apiBase = import.meta.env.VITE_API_URL || 'https://api.defaults'
Provide fallback values for when configuration is missing.
Validation
const apiTimeout = Number(process.env.API_TIMEOUT) || 5000;
Always validate and cast type when reading values.
Security Considerations
Never Expose Secrets
Never output sensitive values in client-side code or logs.
// ❌ Bad Practice
console.log('Secret value:', process.env.SECRET_KEY);
Safe Usage
Use server-side endpoints for sensitive operations.
// ✔ Safe Method
fetch('/api/secure', {
headers: { 'X-ApiKey': import.meta.env.Saftey_KEY }