typescript

To configure strict TypeScript type safety, set up strict flags within your tsconfig.json alongside eslint rules and project structure guidelines to enforce strong typing and reduce potential runtime errors across your codebase.

Choosing between interfaces and type aliases in TypeScript depends on your extension needs; interfaces support declaration merging for object shapes, while type aliases offer flexibility for unions, intersections, and defining discriminated unions.

You write generics with constraints in TypeScript by applying type constraints to restrict allowed types, ensuring type safety while maintaining reusability across different data structures without losing compile-time validation.

TypeScript testing requires specific patterns for async flows and error handling to maintain type safety, utilizing practical patterns to validate asynchronous operations and manage errors effectively during test execution.

To structure TypeScript modules and unions for scalable architecture, organize your code using clear module organization rules and implement discriminated unions to manage complex states while ensuring maintainability during project onboarding.