Type Safe

Definitions

1. Describes code, an API, or a library where the type system prevents operations on values of incompatible types at compile time, eliminating entire categories of runtime errors. A type-safe API ensures that if the code compiles, type-related bugs (like passing a user ID where an order ID is expected) cannot occur.

   In plain English: Code where the compiler catches type mistakes before the program runs, so you can't accidentally use the wrong kind of data.

   Example: "We made the route params type-safe with Zod schemas — now if you typo a parameter name, it's a compile error, not a 500 in production."

Related Terms

• Overload
• Type Alias
• Type Annotation
• Type Cast
• Type Checking
• Type Coercion
• Type Safety
• Conditional Type