TypeScript Generics Guide

Master TypeScript generics to write reusable, type-safe functions, classes, and utilities.

Usage

Describe your use case or share code to get guidance on applying generics effectively.

Examples

• "Write a generic function that works with any array type"
• "How do I constrain a generic to objects with a specific property?"
• "Create a generic API response wrapper type"

Guidelines

• Start simple and add generics only when needed for reuse
• Show generic constraints with extends keyword
• Cover default type parameters for convenience
• Include generic inference patterns that reduce annotation needs
• Explain when generics are overkill vs when they add value