effect-patterns-domain-modeling

Model domain logic safely in TypeScript by applying Effect-TS patterns like branded types for type-safe interfaces, tagged errors for predictable failure handling, and Schema for input validation to build composable business logic.

Handle predictable errors in an Effect-TS domain model by using tagged errors, which allow you to express specific domain failures clearly and handle them compositionally within your business logic workflows.

Validate input and construct domain entities with Effect Schema by defining schema-driven validation rules that parse and enforce type safety, ensuring only valid data builds your domain objects.

Use branded types in TypeScript domain modeling when you need to distinguish primitive values at the type level, preventing common errors like assigning a UserId to a ProductId and ensuring type-safe domain interfaces.

Build sequential business logic workflows with Effect.gen by using generator-based syntax to compose multiple Effect operations, allowing you to validate, construct, and handle domain entities in a predictable, readable flow.

Handle optional domain values safely in Effect-TS by using the Option data type, which explicitly represents the presence or absence of a value and eliminates runtime null checks in your domain layer.