Derive Macro OrpcError 

#[derive(OrpcError)]

Derive macro for registering error enum variants with rorpc.

Annotate an error enum so generate_contract() can emit TypeScript .errors({...}) entries. Variant names are converted to SCREAMING_SNAKE_CASE.

Example

#[derive(OrpcError)]
pub enum AppError {
    NotFound,
    Conflict { reason: String },
    DatabaseError(String),
}

Variant mapping

• Unit variants: NotFound → NOT_FOUND: {}
• Struct variants: Conflict { reason: String } → CONFLICT: { data: z.object({...}) }
• Tuple variants: DatabaseError(String) → DATABASE_ERROR: { data: z.string() }