Advanced Static Types in TypeScript by Marius Schulz

• Restrict null and undefined via Non-Nullable-Types in TypeScript
• Understand TypeScript’s Control Flow Based Type Analysis
• Make Properties and Index Signatures Readonly in TypeScript
• Represent Non-Primitive Types with TypeScript’s object Type
• Use TypeScript’s never Type for Exhaustiveness Checking
• Define Custom Type Guard Functions in TypeScript
• Overload a Function with TypeScript’s Overload Signatures
• Collect Related Strings in a String Enum in TypeScript
• Specify Exact Values with TypeScript’s Literal Types
• Model Alternatives with Discriminated Union Types in TypeScript
• Infer Types for Rest and Spread Properties in TypeScript
• Query Properties with keyof and Lookup Types in TypeScript
• Transform Existing Types Using Mapped Types in TypeScript