What is Type Checking?
Verifying that data types match what your code expects
Why It Matters
Type checking catches bugs early by ensuring you don't accidentally use the wrong kind of data
Real-World Example
Getting a warning when you try to do maths with a text string instead of a number
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Related Terms
TypeScript
JavaScript with added type checking that catches errors before your code runs
Linting
Automatically checking your code for errors, bugs, and style issues
Full-stack
Working on both the frontend (what users see) and backend (the server and database) of an application
JavaScript
The programming language that makes websites interactive and dynamic
Environment Variables
Secret settings stored outside your code, like passwords and API keys
.env File
A file that stores environment variables for your local development environment