Build a Type-Safe Collection Library
Type parameters, constraints, conditional inference, and the patterns that make generics actually useful in production TypeScript.
Build: Build a Type-Safe Collection Library
A guided implementation with code you can run and adapt for production.
Reading TypeScript Generics is free. Pro unlocks the other four modes on all TypeScript Deep Dive topics, so you can go from understanding it to building it.
- SeeThe architecture as diagrams, so you can hold the whole system in your head.
- AnimateStep through the flow one stage at a time and watch the data move.
- TestScenario questions with explanations that show exactly where your model of it breaks.
- BuildA guided implementation with code you can run and adapt for production.
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All TypeScript Deep Dive articles →tsconfig.json: The Complete Guide
Compiler options, strict mode, target vs lib, project references, and a pragmatic strategy for adopting strict mode on a legacy codebase.
Template Literal Types Guide
String manipulation at the type level — pattern matching, type-safe routes, and event name validation.
Module Resolution Demystified
Node, Node16, Bundler — understand how TypeScript actually finds and resolves your import paths, and why it breaks at runtime anyway.
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