diff --git a/frontend/src/utils/rawPacketStats.ts b/frontend/src/utils/rawPacketStats.ts
index 86abaac..71910ee 100644
--- a/frontend/src/utils/rawPacketStats.ts
+++ b/frontend/src/utils/rawPacketStats.ts
@@ -6,10 +6,7 @@ import { getRawPacketObservationKey } from './rawPacketIdentity';
 export const RAW_PACKET_STATS_WINDOWS = ['1m', '5m', '10m', '30m', 'session'] as const;
 export type RawPacketStatsWindow = (typeof RAW_PACKET_STATS_WINDOWS)[number];
 
-export const RAW_PACKET_STATS_WINDOW_SECONDS: Record<
-  Exclude<RawPacketStatsWindow, 'session'>,
-  number
-> = {
+const RAW_PACKET_STATS_WINDOW_SECONDS: Record<Exclude<RawPacketStatsWindow, 'session'>, number> = {
   '1m': 60,
   '5m': 5 * 60,
   '10m': 10 * 60,
diff --git a/frontend/src/utils/serverLoginState.ts b/frontend/src/utils/serverLoginState.ts
index b95ce70..6160b66 100644
--- a/frontend/src/utils/serverLoginState.ts
+++ b/frontend/src/utils/serverLoginState.ts
@@ -28,7 +28,7 @@ export type ServerLoginAttemptState =
       at: number;
     };
 
-export function getServerLoginMethodLabel(
+function getServerLoginMethodLabel(
   method: ServerLoginMethod,
   blankLabel = 'existing-access'
 ): string {
diff --git a/frontend/src/utils/visualizerSettings.ts b/frontend/src/utils/visualizerSettings.ts
index 4cb1ae7..41c69c2 100644
--- a/frontend/src/utils/visualizerSettings.ts
+++ b/frontend/src/utils/visualizerSettings.ts
@@ -17,7 +17,7 @@ export interface VisualizerSettings {
   hidePacketFeed: boolean;
 }
 
-export const VISUALIZER_DEFAULTS: VisualizerSettings = {
+const VISUALIZER_DEFAULTS: VisualizerSettings = {
   showAmbiguousPaths: true,
   showAmbiguousNodes: false,
   useAdvertPathHints: true,
diff --git a/frontend/src/utils/visualizerUtils.ts b/frontend/src/utils/visualizerUtils.ts
index 2c54ec8..75af7cf 100644
--- a/frontend/src/utils/visualizerUtils.ts
+++ b/frontend/src/utils/visualizerUtils.ts
@@ -116,7 +116,7 @@ export interface PathStep {
   hiddenLabel?: string | null;
 }
 
-export function normalizeHopToken(hop: string | null | undefined): string | null {
+function normalizeHopToken(hop: string | null | undefined): string | null {
   const normalized = hop?.trim().toLowerCase() ?? '';
   return normalized.length > 0 ? normalized : null;
 }