Generics
Generic Classes
Master Generic Classes in TypeScript, type-safe collection data structures (Stack, Queue, Cache), generic methods, and static limitations.
Last Updated: July 29, 2026
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10 min read
A Generic Class allows developers to build reusable class definitions where field types, constructor parameter types, and method return types are determined when the class is instantiated.
1. Syntax for Generic Classes
Place generic type parameters in right after the class name:
2. Real-World Example: Type-Safe Stack Data Structure
3. Important Restriction: Static Members Cannot Use Class Generic Parameters
Static fields and static methods belong to the class constructor itself, not instances. Therefore, static members cannot reference the class's type parameters.
4. Interactive Code Playground
Test generic classes below:
5. Summary Table
| Element | Allowed to Use Class |
|---|---|
| Instance Properties | Yes |
| Constructor Parameters | Yes |
| Instance Methods | Yes |