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Type Operations

Learning TypeScript's Type Operations chapter unlocks the true power of TypeScript by operating on types in its type system:

  • Using mapped types to transform existing types into new ones
  • Introducing logic into type operations with conditional types
  • Learning how never interacts with intersections, unions, conditional types, and mapped types
  • Representing patterns of string types using template literal types
  • Combining template literal types and mapped types to modify type keys