What is Environment Variables?
Secret settings stored outside your code, like passwords and API keys
Why It Matters
Environment variables keep sensitive information secure and let you use different settings for development and production
Real-World Example
Your database password is stored as an environment variable, not written directly in code
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Related Terms
Deployment
The process of making your application available for users to access on the internet
.env File
A file that stores environment variables for your local development environment
Full-stack
Working on both the frontend (what users see) and backend (the server and database) of an application
TypeScript
JavaScript with added type checking that catches errors before your code runs
JavaScript
The programming language that makes websites interactive and dynamic
Package Manager
A tool that installs, updates, and manages the external code libraries your project uses