๐ก️ Safe and Declarative Input Handling with ObjNavigator
๐ก️ Safe and Declarative Input Handling with ObjNavigator When building distributed systems , WebSocket pipelines , or HTTP APIs , you constantly handle data from outside your trust boundary. Query parameters, JSON payloads, and message frames often arrive as strings , may be malformed , and should never be consumed directly by business logic. Before using input, it should be: Coerced into runtime types (numbers, booleans, dates, etc.) Validated against business rules Handled safely when invalid — often without throwing In asynchronous or message-driven systems, throwing exceptions is often impractical. Errors must be reported, emitted, or logged , while the system continues running. Traditional imperative handling leads to boilerplate like this: try { const value = Number (req. query . value ); if ( isNaN (value) || value < 0 ) throw new Error ( "Invalid value" ); // business logic here } catch...