TypeScript provides utility types and type guards to model complex data safely.

• Partial, Readonly, Omit, Pick transform existing types.
• Type guards (typeof, in) narrow union types.
• Mapped types create variants from a base type.

Create a read-only user preview and a type guard that checks whether an object is a User.

TypeScript provides utility types and type guards to model complex data safely.

• Partial, Readonly, Omit, Pick transform existing types.
• Type guards (typeof, in) narrow union types.
• Mapped types create variants from a base type.

Create a read-only user preview and a type guard that checks whether an object is a User.