result-types

To enforce explicit error handling in TypeScript, return Result<T, E> types from business functions instead of throwing exceptions. This prevents hidden failures from bypassing composition logic and makes expected errors visible.

The best way to compose deterministic workflows is to chain steps using the createWorkflow function. This builds predictable data flows by passing Result types between steps, ensuring errors are mapped clearly rather than disrupting execution.

To map domain errors to HTTP responses, translate your Result<T, E> types at the external boundary. This requires exhaustive error handling to ensure every expected failure maps cleanly to a specific HTTP response status.

You should use Result types instead of try-catch blocks because exceptions are invisible, bypass composition, and conflate different failures. Result types enforce defensive programming by making expected errors an explicit part of the function signature.

Yes, this workflow approach targets TypeScript projects using the @jagreehal/workflow library. It relies on this library to compose deterministic workflows across steps and enforce explicit Result type handling.