TypeScript Testing Patterns: Unit, Integration, and E2E Strategies That Scale

TypeScript's type system catches many bugs at compile time, but that doesn't eliminate the need for comprehensive testing. In fact, TypeScript applications require a nuanced testing strategy that leverages both the language's static typing benefits and traditional testing practices to ensure code quality at scale. The challenge isn't just writing tests—it's building a testing architecture that grows with your codebase without becoming a maintenance nightmare. This guide covers practical pattern