Master TypeScript from structural typing and advanced generics to production patterns with Zod, tRPC, decorators, and compiler internals. Built for engineers who want to think in types, not just compile.
1-month free Pro trial included
How TypeScript's structural type system works, type inference, widening/narrowing, and the differences from nominal type systems
Generic functions, classes, constraints with keyof/extends, infer keyword, conditional types, and mapped types in depth
TypeScript classes in depth: private fields, abstract classes, implements vs extends, and stage-3 decorators
Deep dive into built-in utility types, writing custom utilities, declaration merging, and augmenting third-party types
tsconfig.json deep dive, strict mode flags, project references, path aliases, and integrating TypeScript with build tools
Result types, Zod validation, type-safe APIs, the Builder pattern, and runtime type checking that mirrors your compile-time types
Migrating large JS codebases, allowJs strategy, declaration files, performance tuning the compiler, and TypeScript 5.x features
Comprehensive type challenges, common interview questions, debugging complex type errors, and building a fully typed mini-project
