typescript-patterns

Create a domains folder structure that reflects business capabilities and use index.ts barrel exports for each domain to establish clear public API surfaces, improving maintainability and reducing cross-team conflict.

Use barrel exports and class-based namespaces to publish stable public APIs, naming APIs by business capability to improve readability and collaboration across teams.

Use system.ts files to isolate external I/O and separate system-level dependencies, ensuring domain logic remains decoupled from external interactions for scalable collaboration.

Domain-driven design applies to TypeScript by organizing code into bounded domains reflecting business capabilities, providing modular structure, explicit public interfaces, and disciplined testability.

Barrel exports establish a stable public API surface for each bounded domain in TypeScript, controlling exposed modules and preventing direct access to internal implementation details.

Set up atomic and parallelizable test suites to validate each bounded domain independently, supporting reliable validation aligned with the domain-driven folder structure.