BUR-68 убрал лишний код. Нашел причину неотлавливаемго экспешена.

app/src/handlers/edge5-modbus-v3.ts

@@ -89,7 +89,12 @@ async function postMetrics(metrics: Edge5ModbusV3Metric[]): Promise<void> {
         throw new Error(text || `${response.status} ${response.statusText}`)
       }
 
-      void postDemoCloudIngest(metric); // для демо-системы
+      const demoResponse = await postDemoCloudIngest(metric); // для демо-системы
+
+      if (!demoResponse.ok) {
+        const text = await demoResponse.text()
+        throw new Error(text || `${demoResponse.status} ${demoResponse.statusText}`)
+      }
 
     } catch (error) {
       const message = error instanceof Error ? error.message : String(error)

app/src/router.ts

@@ -1,19 +1,51 @@
 import { resolveHandler } from './registry.js'
 
+type ErrorWithCause = Error & {
+  cause?: unknown
+}
+
+type NodeError = Error & {
+  code?: string
+  address?: string
+  port?: number
+}
+
+function getErrorCause(error: Error): NodeError | null {
+  const cause = (error as ErrorWithCause).cause
+  return cause instanceof Error ? (cause as NodeError) : null
+}
+
+function formatHandlerError(error: unknown): object {
+  if (!(error instanceof Error)) {
+    return { message: String(error) }
+  }
+
+  const cause = getErrorCause(error)
+
+  return {
+    message: error.message,
+    cause: cause?.message,
+    code: cause?.code,
+    address: cause?.address,
+    port: cause?.port,
+    stack: error.stack,
+  }
+}
+
 export async function routeMessage(
   topic: string,
   payload: Buffer,
 ): Promise<void> {
-  const handler = resolveHandler(topic)
-
-  if (!handler) {
-    console.warn('mqtt.unhandled_topic', { topic })
-    return
-  }
-
   try {
+    const handler = resolveHandler(topic)
+
+    if (!handler) {
+      console.warn('mqtt.unhandled_topic', { topic })
+      return
+    }
+
     await handler(topic, payload)
   } catch (err) {
-    console.error('mqtt.handler_error', { topic, err })
+    console.error('mqtt.handler_error', { topic, error: formatHandlerError(err) })
   }
 }