diff --git a/source/constants.ts b/source/constants.ts
index 140fe80..ddfd93c 100644
--- a/source/constants.ts
+++ b/source/constants.ts
@@ -12,6 +12,3 @@ export const HTTP_STATUS_CODE_CREATED = 201;
  * No content response status code.
  */
 export const HTTP_STATUS_CODE_NO_CONTENT = 204;
-
-
-
diff --git a/source/routes/types.ts b/source/routes/types.ts
index 7e39906..2d2746e 100644
--- a/source/routes/types.ts
+++ b/source/routes/types.ts
@@ -1,6 +1,7 @@
 import type { BaseStream } from '../services/stream/base-stream.js';
 
 export type RouteSendOptions = {
+
     /** Defaults to `response`; any other value sends an application event. */
     type?: string;
 
@@ -15,6 +16,7 @@ export type RouteSendOptions = {
  * connection lifetime are shared with other requests on the same connection.
  */
 export interface RouteStream {
+
     /** Connection shared by every request on the same transport session. */
     readonly connection: BaseStream;
 
@@ -29,6 +31,7 @@ export type RouteHandler = (stream: RouteStream) => void | Promise<void>;
 
 /** An exact application route with no transport-specific metadata. */
 export type RouteDefinition = {
+
     /** Exact route name. Parameter and wildcard syntax are not supported. */
     url: string;
     handler: RouteHandler;
diff --git a/source/services/router.ts b/source/services/router.ts
index f4ce543..71c4d50 100644
--- a/source/services/router.ts
+++ b/source/services/router.ts
@@ -5,6 +5,7 @@ import type { BaseStream } from './stream/base-stream.ts';
 
 /** Canonical request produced by every transport adapter. */
 export type ApplicationRequest = {
+
     /** Exact application route name. */
     path: string;
 
diff --git a/source/services/stream/base-stream.ts b/source/services/stream/base-stream.ts
index b79f824..c76ac31 100644
--- a/source/services/stream/base-stream.ts
+++ b/source/services/stream/base-stream.ts
@@ -1,5 +1,6 @@
 /** A normal request/response result before transport encoding. */
 export type StreamResponse = {
+
     /** Optional correlation ID for multiplexed transports. */
     id?: string;
 
@@ -15,6 +16,7 @@ export type StreamResponse = {
 
 /** An application event before a transport applies its wire encoding. */
 export type StreamEvent = {
+
     /** Optional event or correlation ID. */
     id?: string;
 
diff --git a/test/helpers/test-connection.ts b/test/helpers/test-connection.ts
index caa318f..538f1b5 100644
--- a/test/helpers/test-connection.ts
+++ b/test/helpers/test-connection.ts
@@ -1,45 +1,43 @@
-import {
-  BaseStream,
-  type StreamMessage,
-} from "../../source/services/stream/base-stream.js";
+import { BaseStream, type StreamMessage } from '../../source/services/stream/base-stream.ts';
 
 /** Minimal observable connection used by application and broadcaster tests. */
 export class TestConnection extends BaseStream {
-  readonly messages: StreamMessage[] = [];
-  readonly closeCallbacks: Array<() => void> = [];
-  closed = false;
+    readonly messages: StreamMessage[] = [];
+    readonly closeCallbacks: Array<() => void> = [];
+    closed = false;
 
-  constructor(
-    readonly streaming: boolean,
-    readonly bidirectional: boolean,
-  ) {
-    super();
-  }
-
-  async send(message: StreamMessage): Promise<void> {
-    if (this.closed) {
-      throw new Error("connection is closed");
+    constructor(
+        readonly streaming: boolean,
+        readonly bidirectional: boolean,
+    ) {
+        super();
     }
 
-    this.messages.push(message);
-  }
+    async send(message: StreamMessage): Promise<void> {
+        if (this.closed) {
+            throw new Error('connection is closed');
+        }
 
-  close(): void {
-    if (this.closed) {
-      return;
+        this.messages.push(message);
     }
 
-    this.closed = true;
-    const callbacks = this.closeCallbacks.splice(0);
-    callbacks.forEach((callback) => callback());
-  }
+    close(): void {
+        if (this.closed) {
+            return;
+        }
 
-  onClose(callback: () => void): void {
-    if (this.closed) {
-      callback();
-      return;
+        this.closed = true;
+        const callbacks = this.closeCallbacks.splice(0);
+        callbacks.forEach((callback) => callback());
     }
 
-    this.closeCallbacks.push(callback);
-  }
+    onClose(callback: () => void): void {
+        if (this.closed) {
+            callback();
+
+            return;
+        }
+
+        this.closeCallbacks.push(callback);
+    }
 }
diff --git a/test/services/router.test.ts b/test/services/router.test.ts
index 222d3e9..20c1826 100644
--- a/test/services/router.test.ts
+++ b/test/services/router.test.ts
@@ -1,134 +1,111 @@
-import { describe, expect, it } from "vitest";
+import { describe, expect, it } from 'vitest';
 
-import type { RouteDefinition, RouteModule } from "../../source/routes/types.js";
-import { ApplicationError } from "../../source/errors/index.js";
-import { ApplicationRouter } from "../../source/services/router.js";
-import { TestConnection } from "../helpers/test-connection.js";
+import type { RouteDefinition, RouteModule } from '../../source/routes/types.ts';
+import { ApplicationRouter } from '../../source/services/router.ts';
+import { TestConnection } from '../helpers/test-connection.ts';
 
-function moduleWith(routes: RouteDefinition[]): RouteModule {
-  return {
-    async getRoutes() {
-      return routes;
-    },
-  };
-}
+const moduleWith = (routes: RouteDefinition[]): RouteModule => {
+    return {
+        async getRoutes(): Promise<RouteDefinition[]> {
+            return routes;
+        },
+    };
+};
 
-describe("ApplicationRouter initialization", () => {
-  it("rejects duplicate exact paths during startup", async () => {
-    const route = { url: "/echo", handler: () => undefined };
+describe('ApplicationRouter initialization', (): void => {
+    it('rejects duplicate exact paths during startup', async (): Promise<void> => {
+        const route = { url: '/echo', handler: (): void => undefined };
 
-    await expect(
-      ApplicationRouter.create([moduleWith([route]), moduleWith([route])]),
-    ).rejects.toThrow("Duplicate application route: /echo");
-  });
+        await expect(ApplicationRouter.create([ moduleWith([ route ]), moduleWith([ route ]) ])).rejects.toThrow('Duplicate application route: /echo');
+    });
 
-  it.each(["echo", "/", "/items/:id", "/items?active=true", "/items#active"])(
-    "rejects the invalid route path %s",
-    async (url) => {
-      await expect(
-        ApplicationRouter.create([
-          moduleWith([{ url, handler: () => undefined }]),
-        ]),
-      ).rejects.toThrow("Invalid application route");
-    },
-  );
+    it.each([ 'echo', '/', '/items/:id', '/items?active=true', '/items#active' ])('rejects the invalid route path %s', async (url): Promise<void> => {
+        await expect(ApplicationRouter.create([ moduleWith([{ url, handler: (): void => undefined }]) ])).rejects.toThrow('Invalid application route');
+    });
 });
 
-describe("ApplicationRouter dispatch", () => {
-  it("binds the connection, body, and request ID to one route stream", async () => {
-    const connection = new TestConnection(false, false);
-    const router = await ApplicationRouter.create([
-      moduleWith([
-        {
-          url: "/echo",
-          handler: async (stream) => {
-            expect(stream.connection).toBe(connection);
-            await stream.send(stream.body);
-          },
-        },
-      ]),
-    ]);
+describe('ApplicationRouter dispatch', (): void => {
+    it('binds the connection, body, and request ID to one route stream', async (): Promise<void> => {
+        const connection = new TestConnection(false, false);
+        const router = await ApplicationRouter.create([
+            moduleWith([
+                {
+                    url: '/echo',
+                    handler: async (stream): Promise<void> => {
+                        expect(stream.connection).toBe(connection);
+                        await stream.send(stream.body);
+                    },
+                },
+            ]),
+        ]);
 
-    await router.dispatch(
-      { path: "/echo", body: { value: 1 }, requestId: "request-1" },
-      connection,
-    );
+        await router.dispatch({ path: '/echo', body: { value: 1 }, requestId: 'request-1' }, connection);
 
-    expect(connection.messages).toEqual([
-      {
-        id: "request-1",
-        type: "response",
-        statusCode: 200,
-        body: { value: 1 },
-      },
-    ]);
+        expect(connection.messages).toEqual([
+            {
+                id: 'request-1',
+                type: 'response',
+                statusCode: 200,
+                body: { value: 1 },
+            },
+        ]);
 
-    await expect(
-      router.dispatch({ path: "/echo/other", body: {} }, connection),
-    ).rejects.toMatchObject({ statusCode: 404 });
-  });
+        await expect(router.dispatch({ path: '/echo/other', body: {} }, connection)).rejects.toMatchObject({ statusCode: 404 });
+    });
 
-  it("preserves correlation when concurrent requests finish out of order", async () => {
-    const completions = new Map<string, () => void>();
-    const router = await ApplicationRouter.create([
-      moduleWith([
-        {
-          url: "/delayed",
-          handler: async (stream) => {
-            const key = (stream.body as { key: string }).key;
-            await new Promise<void>((resolve) => completions.set(key, resolve));
-            await stream.send({ key });
-          },
-        },
-      ]),
-    ]);
-    const connection = new TestConnection(true, true);
+    it('preserves correlation when concurrent requests finish out of order', async (): Promise<void> => {
+        const completions = new Map<string, () => void>();
+        const router = await ApplicationRouter.create([
+            moduleWith([
+                {
+                    url: '/delayed',
+                    handler: async (stream): Promise<void> => {
+                        const key = (stream.body as { key: string }).key;
+                        await new Promise<void>((resolve) => completions.set(key, resolve));
+                        await stream.send({ key });
+                    },
+                },
+            ]),
+        ]);
+        const connection = new TestConnection(true, true);
 
-    const first = router.dispatch(
-      { path: "/delayed", body: { key: "A" }, requestId: "A" },
-      connection,
-    );
-    const second = router.dispatch(
-      { path: "/delayed", body: { key: "B" }, requestId: "B" },
-      connection,
-    );
+        const first = router.dispatch({ path: '/delayed', body: { key: 'A' }, requestId: 'A' }, connection);
+        const second = router.dispatch({ path: '/delayed', body: { key: 'B' }, requestId: 'B' }, connection);
 
-    completions.get("B")?.();
-    await second;
-    completions.get("A")?.();
-    await first;
+        completions.get('B')?.();
+        await second;
+        completions.get('A')?.();
+        await first;
 
-    expect(connection.messages).toEqual([
-      {
-        id: "B",
-        type: "response",
-        statusCode: 200,
-        body: { key: "B" },
-      },
-      {
-        id: "A",
-        type: "response",
-        statusCode: 200,
-        body: { key: "A" },
-      },
-    ]);
-  });
+        expect(connection.messages).toEqual([
+            {
+                id: 'B',
+                type: 'response',
+                statusCode: 200,
+                body: { key: 'B' },
+            },
+            {
+                id: 'A',
+                type: 'response',
+                statusCode: 200,
+                body: { key: 'A' },
+            },
+        ]);
+    });
 
-  it("propagates route failures without infrastructure-specific cleanup", async () => {
-    const error = new Error("route failed");
-    const router = await ApplicationRouter.create([
-      moduleWith([
-        {
-          url: "/failure",
-          handler: () => {
-            throw error;
-          },
-        },
-      ]),
-    ]);
+    it('propagates route failures without infrastructure-specific cleanup', async (): Promise<void> => {
+        const error = new Error('route failed');
+        const router = await ApplicationRouter.create([
+            moduleWith([
+                {
+                    url: '/failure',
+                    handler: (): void => {
+                        throw error;
+                    },
+                },
+            ]),
+        ]);
 
-    await expect(
-      router.dispatch({ path: "/failure" }, new TestConnection(false, false)),
-    ).rejects.toBe(error);
-  });
+        await expect(router.dispatch({ path: '/failure' }, new TestConnection(false, false))).rejects.toBe(error);
+    });
 });