diff --git a/backend/src/services/traffic-flow-engine.ts b/backend/src/services/traffic-flow-engine.ts
index e7f83a7..65df9e9 100644
--- a/backend/src/services/traffic-flow-engine.ts
+++ b/backend/src/services/traffic-flow-engine.ts
@@ -1,5 +1,5 @@
 import type Database from "better-sqlite3"
-import { normalizeParsedFlow, parseFlowPacket, protoName, type ParsedFlow } from "./traffic-flow-parse.js"
+import { normalizeParsedFlow, parseFlowPacket, protoName, type ParsedFlow, type ParsedFlowInput } from "./traffic-flow-parse.js"
 import { classifyFlowPlaneLite } from "./traffic-flow-planes.js"
 import { pickServerIdForExporter, type OverlayPeerRef } from "./traffic-flow-map-exporter.js"
 import { applicationName } from "./traffic-flow-apps.js"
@@ -232,7 +232,7 @@ export function getEngineStats(): EngineStats {
   }
 }
 
-export function queueParsedFlows(serverId: number, flows: ParsedFlow[]): void {
+export function queueParsedFlows(serverId: number, flows: ParsedFlowInput[]): void {
   const bucketAt = minuteBucketIso()
   const ripeMisses: string[] = []
   for (const raw of flows) {
@@ -714,7 +714,7 @@ export function onEngineTick(): void {
   flushPending()
 }
 
-export function ingestParsedFlowsForServerForTests(serverId: number, flows: ParsedFlow[]): void {
+export function ingestParsedFlowsForServerForTests(serverId: number, flows: ParsedFlowInput[]): void {
   queueParsedFlows(serverId, flows)
   rollFlowRings()
 }
diff --git a/backend/src/services/traffic-flow-ingest.ts b/backend/src/services/traffic-flow-ingest.ts
index fdb1e5f..905453b 100644
--- a/backend/src/services/traffic-flow-ingest.ts
+++ b/backend/src/services/traffic-flow-ingest.ts
@@ -6,7 +6,7 @@ import { beginSqliteExclusiveOp, db, endSqliteExclusiveOp, sqliteDatabase } from
 import { env } from "../config.js"
 import { flowBuckets, servers } from "../db/schema.js"
 import type { FlowPurgeDto, FlowStatsDto, FlowTalkerDto } from "@mmapp/contracts/traffic-flow"
-import { protoName, type ParsedFlow } from "./traffic-flow-parse.js"
+import { protoName, type ParsedFlowInput } from "./traffic-flow-parse.js"
 import type { CollectorHeartbeat, ExporterMapPayload, MainToWorker, WorkerToMain } from "./traffic-flow-collector-ipc.js"
 import {
   attachEngineSqlite,
@@ -404,7 +404,7 @@ export function listFlowTalkers(minutes = 5): FlowStatsDto {
   }
 }
 
-export function ingestParsedFlowsForTests(exporterIp: string, flows: ParsedFlow[]) {
+export function ingestParsedFlowsForTests(exporterIp: string, flows: ParsedFlowInput[]) {
   applyExporterCtxFromDb()
   const serverId = resolveServerId(exporterIp)
   if (serverId == null) return
@@ -413,7 +413,7 @@ export function ingestParsedFlowsForTests(exporterIp: string, flows: ParsedFlow[
   flushPending()
 }
 
-export function ingestParsedFlowsForServerForTests(serverId: number, flows: ParsedFlow[]) {
+export function ingestParsedFlowsForServerForTests(serverId: number, flows: ParsedFlowInput[]) {
   engineIngestForServer(serverId, flows)
 }
 
diff --git a/backend/src/services/traffic-flow-parse.ts b/backend/src/services/traffic-flow-parse.ts
index f2a9462..b281b8b 100644
--- a/backend/src/services/traffic-flow-parse.ts
+++ b/backend/src/services/traffic-flow-parse.ts
@@ -15,6 +15,8 @@ export interface ParsedFlow {
   natDst: string
 }
 
+export type ParsedFlowInput = Partial<ParsedFlow> & Pick<ParsedFlow, "src" | "dst" | "proto" | "bytes">
+
 export function emptyParsedFlow(): ParsedFlow {
   return {
     src: "",
@@ -34,7 +36,7 @@ export function emptyParsedFlow(): ParsedFlow {
   }
 }
 
-export function normalizeParsedFlow(flow: Partial<ParsedFlow> & Pick<ParsedFlow, "src" | "dst" | "proto" | "bytes">): ParsedFlow {
+export function normalizeParsedFlow(flow: ParsedFlowInput): ParsedFlow {
   return {
     ...emptyParsedFlow(),
     ...flow,
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
index dabe2fc..ad44a8f 100644
--- a/backend/tsconfig.json
+++ b/backend/tsconfig.json
@@ -15,5 +15,5 @@
     "sourceMap": true
   },
   "include": ["src/**/*"],
-  "exclude": ["node_modules", "dist"]
+  "exclude": ["node_modules", "dist", "src/**/*.test.ts"]
 }