fix: restore test files to master versions on PR1

Test files were accidentally copied from fix/node24 which included
test migration changes (node:test, import.meta). Those belong in PR2.
Restored to master versions with only .ts import extension rewrites.

Assisted-By: Claude Opus 4.6 (1M context) <[email protected]>

Author: bennypowers

packages/browser-logs/test/serialize-deserialize.test.ts

@@ -3,7 +3,7 @@ import puppeteer, { Browser, Page } from 'puppeteer';
 import fs from 'fs';
 import path from 'path';
 
-import { deserialize } from '../src/deserialize.js';
+import { deserialize } from '../src/deserialize.ts';
 
 const serializeScript = fs.readFileSync(require.resolve('../dist/serialize.js'), 'utf-8');
 const defaultOptions = { browserRootDir: __dirname, cwd: __dirname };

packages/dev-server-core/test/helpers.ts

@@ -5,8 +5,8 @@ import {
   fetchText,
   expectIncludes,
   virtualFilesPlugin,
-} from '../src/test-helpers.js';
-import { DevServerCoreConfig } from '../src/server/DevServerCoreConfig.js';
+} from '../src/test-helpers.ts';
+import { DevServerCoreConfig } from '../src/server/DevServerCoreConfig.ts';
 
 export function createTestServer(config: Partial<DevServerCoreConfig> = {}) {
   return originalCreateTestServer({

packages/dev-server-core/test/middleware/basePathMiddleware.test.ts

@@ -1,7 +1,7 @@
 import { expect } from 'chai';
 
-import { DevServer } from '../../src/server/DevServer.js';
-import { createTestServer } from '../helpers.js';
+import { DevServer } from '../../src/server/DevServer.ts';
+import { createTestServer } from '../helpers.ts';
 
 describe('base path middleware', () => {
   describe('without a trailing /', () => {

packages/dev-server-core/test/middleware/etagCacheMiddleware.test.ts

@@ -3,8 +3,8 @@ import path from 'path';
 import fs from 'fs';
 import { nanoid } from 'nanoid';
 
-import { createTestServer, timeout } from '../helpers.js';
-import { DevServer } from '../../src/server/DevServer.js';
+import { createTestServer, timeout } from '../helpers.ts';
+import { DevServer } from '../../src/server/DevServer.ts';
 
 const fixtureDir = path.resolve(__dirname, '..', 'fixtures', 'basic');
 const testFileAName = '/cached-file-a.js';

packages/dev-server-core/test/middleware/historyApiFallbackMiddleware.test.ts

@@ -1,8 +1,8 @@
 import { expect } from 'chai';
 import path from 'path';
 
-import { createTestServer } from '../helpers.js';
-import { DevServer } from '../../src/server/DevServer.js';
+import { createTestServer } from '../helpers.ts';
+import { DevServer } from '../../src/server/DevServer.ts';
 
 describe('history api fallback middleware', () => {
   describe('index in root', () => {

packages/dev-server-core/test/middleware/pluginFileParsedMiddleware.test.ts

@@ -1,7 +1,7 @@
 import { expect } from 'chai';
 import { Context } from 'koa';
 
-import { createTestServer } from '../helpers.js';
+import { createTestServer } from '../helpers.ts';
 
 describe('plugin-file-parsed middleware', () => {
   it('is called after other plugin hooks', async () => {

packages/dev-server-core/test/middleware/pluginMimeTypeMiddleware.test.ts

@@ -1,6 +1,6 @@
 import { expect } from 'chai';
 
-import { createTestServer } from '../helpers.js';
+import { createTestServer } from '../helpers.ts';
 
 describe('plugin-mime-type middleware', () => {
   it('can set the mime type of a file with a string', async () => {

packages/dev-server-core/test/middleware/pluginServeMiddleware.test.ts

@@ -1,6 +1,6 @@
 import { expect } from 'chai';
 
-import { createTestServer } from '../helpers.js';
+import { createTestServer } from '../helpers.ts';
 
 describe('plugin-serve middleware', () => {
   it('can serve non-existing files', async () => {

packages/dev-server-core/test/middleware/pluginTransformMiddleware.test.ts

@@ -1,8 +1,8 @@
 /* eslint-disable no-restricted-syntax, no-await-in-loop */
 import { expect } from 'chai';
 
-import { createTestServer } from '../helpers.js';
-import { fetchText, expectIncludes } from '../../src/test-helpers.js';
+import { createTestServer } from '../helpers.ts';
+import { fetchText, expectIncludes } from '../../src/test-helpers.ts';
 
 describe('plugin-transform middleware', () => {
   it('can transform a served file', async () => {

packages/dev-server-core/test/middleware/serveFilesMiddleware.test.ts

@@ -1,7 +1,7 @@
 import { expect } from 'chai';
 import path from 'path';
 
-import { createTestServer } from '../helpers.js';
+import { createTestServer } from '../helpers.ts';
 
 describe('serveFilesMiddleware', () => {
   it('can serve files outside of the root directory', async () => {