process
process<Next = Current>(fn: Processor<Current, Next> | CallableProcessor<Current, Next>): RouteBuilder<Next>
Process the exchange with full access to headers, body, and context. Use when you need more control than transform.
.process((exchange) => {
const userId = exchange.headers.get('user-id')
return {
...exchange.body,
processedBy: userId,
timestamp: new Date().toISOString()
}
})