Advanced TypeScript Types Skill

Overview

Master advanced TypeScript type features including generics, conditional types, mapped types, and utility types.

Topics Covered

Generics

• Generic functions
• Generic interfaces
• Generic classes
• Generic constraints
• Default type parameters

Conditional Types

• Conditional type syntax
• Inferring within conditionals
• Distributive conditionals
• Type filtering
• Never in conditionals

Mapped Types

• Basic mapped types
• Key remapping
• Modifiers (+/-)
• Template literal types
• Recursive types

Utility Types

• Partial, Required, Readonly
• Pick, Omit, Record
• Extract, Exclude
• ReturnType, Parameters
• Awaited, NonNullable

Advanced Patterns

• Type guards
• Branded types
• Opaque types
• Variadic tuple types
• Type-level programming

Prerequisites

• TypeScript fundamentals
• Basic generics understanding

Learning Outcomes

• Create complex generic types
• Use conditional types effectively
• Build custom utility types
• Apply type-level patterns