From 9dbca2d64416f37a827f89c33c9d5a941617fd17 Mon Sep 17 00:00:00 2001
From: 9aoy <9aoyuao@gmail.com>
Date: Thu, 26 Mar 2026 11:14:55 +0800
Subject: [PATCH 1/3] chore: fix MODULE_TYPELESS_PACKAGE_JSON warnings

---
 e2e/browser-mode/coverage.test.ts             |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 ....config.ts => rstest.noInclude.config.mts} |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../fixtures/config/index.test.ts             |  4 ++--
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../project-a/tsconfig.json                   |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../project-b/tsconfig.json                   |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 e2e/build/index.test.ts                       |  4 ++--
 .../{rstest.config.ts => rstest.config.mts}   |  0
 e2e/cli/initBrowser.test.ts                   |  4 ++--
 .../{rstest.config.ts => rstest.config.mts}   |  0
 ...config.ts => rstest.envOptions.config.mts} |  0
 ....config.ts => rstest.externals.config.mts} |  0
 e2e/dom/index.test.ts                         |  4 ++--
 .../{rstest.config.ts => rstest.config.mts}   |  0
 ...e.config.ts => rstest.override.config.mts} |  0
 e2e/exclude/index.test.ts                     |  2 +-
 e2e/externals/bundleDependencies.test.ts      |  6 ++---
 ...config.ts => rstest.bundleDeps.config.mts} |  0
 ...ebug.config.ts => rstest.debug.config.mts} |  0
 ...ash.config.ts => rstest.lodash.config.mts} |  0
 ...nfig.ts => rstest.noBundleDeps.config.mts} |  0
 e2e/externals/interop.test.ts                 |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 e2e/projects/coverage.test.ts                 |  4 ++--
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 ...st.404.config.ts => rstest.404.config.mts} |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 ...e.config.ts => rstest.coverage.config.mts} |  0
 ....ts => rstest.coverage.include.config.mts} |  0
 ...=> rstest.hideSkippedTestFiles.config.mts} |  0
 ...ine.config.ts => rstest.inline.config.mts} |  0
 ...fig.ts => rstest.projectConfig.config.mts} |  0
 ...t.config.ts => rstest.slowTest.config.mts} |  0
 e2e/projects/index.test.ts                    | 10 ++++----
 e2e/projects/inline.test.ts                   |  2 +-
 ...e.config.ts => rstest.coverage.config.mts} |  0
 e2e/reporter/md.test.ts                       | 23 +++++++++++--------
 e2e/reporter/mergeReports.test.ts             | 11 ++++++---
 ...Md.config.ts => rstest.agentMd.config.mts} |  0
 ...g.ts => rstest.agentMd.console.config.mts} |  0
 ...nfig.ts => rstest.agentMd.pass.config.mts} |  0
 ...stest.agentMd.snapshotMismatch.config.mts} |  0
 ...fig.ts => rstest.agentMd.throw.config.mts} |  0
 ...g.ts => rstest.agentMd.timeout.config.mts} |  0
 ...ts => rstest.agentMd.truncated.config.mts} |  0
 ...ts => rstest.agentMd.unhandled.config.mts} |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 ...st.esm.config.ts => rstest.esm.config.mts} |  0
 ...nfig.ts => rstest.fileProtocol.config.mts} |  0
 e2e/setup/index.test.ts                       |  4 ++--
 .../{rstest.config.ts => rstest.config.mts}   |  0
 e2e/snapshot/file.test.ts                     |  2 +-
 ...ns.config.ts => rstest.options.config.mts} |  0
 ...nfig.ts => rstest.snapshotPath.config.mts} |  0
 e2e/snapshot/options.test.ts                  |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 package.json                                  |  2 +-
 packages/adapter-rsbuild/rslib.config.mts     |  2 +-
 packages/adapter-rslib/rslib.config.mts       |  2 +-
 packages/adapter-rspack/rslib.config.mts      |  2 +-
 packages/core/src/cli/init/browser/create.ts  |  2 +-
 .../core/src/cli/init/browser/templates.ts    |  4 ++--
 packages/core/src/utils/constants.ts          |  6 ++---
 packages/vscode/rslib.config.mts              |  2 +-
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 .../{rstest.config.ts => rstest.config.mts}   |  0
 packages/vscode/tests/suite/workspace.test.ts | 16 ++++++-------
 121 files changed, 70 insertions(+), 60 deletions(-)
 rename e2e/browser-mode/fixtures/basic/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/browser-coverage/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/browser-coverage/{rstest.noInclude.config.ts => rstest.noInclude.config.mts} (100%)
 rename e2e/browser-mode/fixtures/browser-react/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/config/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/console/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/custom-output/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/entry-override/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/env/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/error/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/github-actions/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/invalid-bundle-dependencies/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/invalid-provider/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/isolation/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/list/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/locator-api/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/multi-project-config/project-a/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/multi-project-config/project-b/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/multi-project-config/{rstest.config.ts => rstest.config.mts} (50%)
 rename e2e/browser-mode/fixtures/no-tests/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/reporter-watch/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/reporter/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/setup-files/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/snapshot/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/viewport-preset/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/viewport/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/watch-stale/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/watch/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/browser-mode/fixtures/webkit/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/alias/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/cssModules/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/customOutput/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/decorators/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/define/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/plugin/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/runtimeRequire/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/build/fixtures/tools/rspack/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/chaiConfigs/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/dom/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/dom/fixtures/{rstest.envOptions.config.ts => rstest.envOptions.config.mts} (100%)
 rename e2e/dom/fixtures/{rstest.externals.config.ts => rstest.externals.config.mts} (100%)
 rename e2e/env/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/exclude/fixtures/{rstest.override.config.ts => rstest.override.config.mts} (100%)
 rename e2e/externals/fixtures/{rstest.bundleDeps.config.ts => rstest.bundleDeps.config.mts} (100%)
 rename e2e/externals/fixtures/{rstest.debug.config.ts => rstest.debug.config.mts} (100%)
 rename e2e/externals/fixtures/{rstest.lodash.config.ts => rstest.lodash.config.mts} (100%)
 rename e2e/externals/fixtures/{rstest.noBundleDeps.config.ts => rstest.noBundleDeps.config.mts} (100%)
 rename e2e/in-source/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/lifecycle/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/mock/fixtures/reRexports/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/mock/fixtures/unmock/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures-shard/packages/client-vue/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures-shard/packages/client/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures-shard/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures/extends/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures/packages/client-vue/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures/packages/client/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.404.config.ts => rstest.404.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.coverage.config.ts => rstest.coverage.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.coverage.include.config.ts => rstest.coverage.include.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.hideSkippedTestFiles.config.ts => rstest.hideSkippedTestFiles.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.inline.config.ts => rstest.inline.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.projectConfig.config.ts => rstest.projectConfig.config.mts} (100%)
 rename e2e/projects/fixtures/{rstest.slowTest.config.ts => rstest.slowTest.config.mts} (100%)
 rename e2e/reporter/fixtures-merge/{rstest.coverage.config.ts => rstest.coverage.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.config.ts => rstest.agentMd.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.console.config.ts => rstest.agentMd.console.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.pass.config.ts => rstest.agentMd.pass.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.snapshotMismatch.config.ts => rstest.agentMd.snapshotMismatch.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.throw.config.ts => rstest.agentMd.throw.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.timeout.config.ts => rstest.agentMd.timeout.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.truncated.config.ts => rstest.agentMd.truncated.config.mts} (100%)
 rename e2e/reporter/{rstest.agentMd.unhandled.config.ts => rstest.agentMd.unhandled.config.mts} (100%)
 rename e2e/reporter/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/rootDir/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/setup/fixtures/basic/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/setup/fixtures/error/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/setup/fixtures/no-isolate/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/setup/fixtures/package-name/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/setup/fixtures/package-name/{rstest.esm.config.ts => rstest.esm.config.mts} (100%)
 rename e2e/setup/fixtures/package-name/{rstest.fileProtocol.config.ts => rstest.fileProtocol.config.mts} (100%)
 rename e2e/singleton/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/snapshot/fixtures/{rstest.options.config.ts => rstest.options.config.mts} (100%)
 rename e2e/snapshot/fixtures/{rstest.snapshotPath.config.ts => rstest.snapshotPath.config.mts} (100%)
 rename e2e/ssr/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/vue/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/watch/fixtures-setup/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/watch/fixtures-shortcuts/{rstest.config.ts => rstest.config.mts} (100%)
 rename e2e/watch/fixtures/{rstest.config.ts => rstest.config.mts} (100%)
 rename packages/vscode/sample/{rstest.config.ts => rstest.config.mts} (100%)
 rename packages/vscode/tests/fixtures/workspace-1/{rstest.config.ts => rstest.config.mts} (100%)
 rename packages/vscode/tests/fixtures/workspace-2/folder/project-2/{rstest.config.ts => rstest.config.mts} (100%)
 rename packages/vscode/tests/fixtures/workspace-2/project-1/{rstest.config.ts => rstest.config.mts} (100%)

diff --git a/e2e/browser-mode/coverage.test.ts b/e2e/browser-mode/coverage.test.ts
index ba57834eb..faf83c9ec 100644
--- a/e2e/browser-mode/coverage.test.ts
+++ b/e2e/browser-mode/coverage.test.ts
@@ -19,7 +19,7 @@ describe('browser mode - coverage', () => {
 
   it('should collect coverage data successfully without include option', async () => {
     const { expectExecSuccess, cli } = await runBrowserCli('browser-coverage', {
-      args: ['-c', 'rstest.noInclude.config.ts'],
+      args: ['-c', 'rstest.noInclude.config.mts'],
     });
 
     await expectExecSuccess();
diff --git a/e2e/browser-mode/fixtures/basic/rstest.config.ts b/e2e/browser-mode/fixtures/basic/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/basic/rstest.config.ts
rename to e2e/browser-mode/fixtures/basic/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/browser-coverage/rstest.config.ts b/e2e/browser-mode/fixtures/browser-coverage/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/browser-coverage/rstest.config.ts
rename to e2e/browser-mode/fixtures/browser-coverage/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/browser-coverage/rstest.noInclude.config.ts b/e2e/browser-mode/fixtures/browser-coverage/rstest.noInclude.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/browser-coverage/rstest.noInclude.config.ts
rename to e2e/browser-mode/fixtures/browser-coverage/rstest.noInclude.config.mts
diff --git a/e2e/browser-mode/fixtures/browser-react/rstest.config.ts b/e2e/browser-mode/fixtures/browser-react/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/browser-react/rstest.config.ts
rename to e2e/browser-mode/fixtures/browser-react/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/config/index.test.ts b/e2e/browser-mode/fixtures/config/index.test.ts
index 6b8062211..460ae2367 100644
--- a/e2e/browser-mode/fixtures/config/index.test.ts
+++ b/e2e/browser-mode/fixtures/config/index.test.ts
@@ -1,4 +1,4 @@
-// @ts-expect-error - @test-alias is defined via resolve.alias in rstest.config.ts
+// @ts-expect-error - @test-alias is defined via resolve.alias in rstest.config.mts
 import { ALIASED_VALUE } from '@test-alias';
 
 // This test uses globals: true config
@@ -19,7 +19,7 @@ describe('globals config', () => {
 
 describe('rsbuild config options', () => {
   it('should support source.define', () => {
-    // @ts-expect-error - __TEST_DEFINE__ is defined via source.define in rstest.config.ts
+    // @ts-expect-error - __TEST_DEFINE__ is defined via source.define in rstest.config.mts
     expect(__TEST_DEFINE__).toBe('define-value');
   });
 
diff --git a/e2e/browser-mode/fixtures/config/rstest.config.ts b/e2e/browser-mode/fixtures/config/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/config/rstest.config.ts
rename to e2e/browser-mode/fixtures/config/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/console/rstest.config.ts b/e2e/browser-mode/fixtures/console/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/console/rstest.config.ts
rename to e2e/browser-mode/fixtures/console/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/custom-output/rstest.config.ts b/e2e/browser-mode/fixtures/custom-output/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/custom-output/rstest.config.ts
rename to e2e/browser-mode/fixtures/custom-output/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/entry-override/rstest.config.ts b/e2e/browser-mode/fixtures/entry-override/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/entry-override/rstest.config.ts
rename to e2e/browser-mode/fixtures/entry-override/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/env/rstest.config.ts b/e2e/browser-mode/fixtures/env/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/env/rstest.config.ts
rename to e2e/browser-mode/fixtures/env/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/error/rstest.config.ts b/e2e/browser-mode/fixtures/error/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/error/rstest.config.ts
rename to e2e/browser-mode/fixtures/error/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/github-actions/rstest.config.ts b/e2e/browser-mode/fixtures/github-actions/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/github-actions/rstest.config.ts
rename to e2e/browser-mode/fixtures/github-actions/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/invalid-bundle-dependencies/rstest.config.ts b/e2e/browser-mode/fixtures/invalid-bundle-dependencies/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/invalid-bundle-dependencies/rstest.config.ts
rename to e2e/browser-mode/fixtures/invalid-bundle-dependencies/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/invalid-provider/rstest.config.ts b/e2e/browser-mode/fixtures/invalid-provider/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/invalid-provider/rstest.config.ts
rename to e2e/browser-mode/fixtures/invalid-provider/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/isolation/rstest.config.ts b/e2e/browser-mode/fixtures/isolation/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/isolation/rstest.config.ts
rename to e2e/browser-mode/fixtures/isolation/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/list/rstest.config.ts b/e2e/browser-mode/fixtures/list/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/list/rstest.config.ts
rename to e2e/browser-mode/fixtures/list/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/locator-api/rstest.config.ts b/e2e/browser-mode/fixtures/locator-api/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/locator-api/rstest.config.ts
rename to e2e/browser-mode/fixtures/locator-api/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/multi-project-config/project-a/rstest.config.ts b/e2e/browser-mode/fixtures/multi-project-config/project-a/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/multi-project-config/project-a/rstest.config.ts
rename to e2e/browser-mode/fixtures/multi-project-config/project-a/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/multi-project-config/project-a/tsconfig.json b/e2e/browser-mode/fixtures/multi-project-config/project-a/tsconfig.json
index 671ad7782..55123ac4e 100644
--- a/e2e/browser-mode/fixtures/multi-project-config/project-a/tsconfig.json
+++ b/e2e/browser-mode/fixtures/multi-project-config/project-a/tsconfig.json
@@ -11,5 +11,5 @@
     "jsx": "react-jsx",
     "types": ["@rstest/core"]
   },
-  "include": ["tests", "rstest.config.ts"]
+  "include": ["tests", "rstest.config.mts"]
 }
diff --git a/e2e/browser-mode/fixtures/multi-project-config/project-b/rstest.config.ts b/e2e/browser-mode/fixtures/multi-project-config/project-b/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/multi-project-config/project-b/rstest.config.ts
rename to e2e/browser-mode/fixtures/multi-project-config/project-b/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/multi-project-config/project-b/tsconfig.json b/e2e/browser-mode/fixtures/multi-project-config/project-b/tsconfig.json
index 1fe947995..f217d983b 100644
--- a/e2e/browser-mode/fixtures/multi-project-config/project-b/tsconfig.json
+++ b/e2e/browser-mode/fixtures/multi-project-config/project-b/tsconfig.json
@@ -10,5 +10,5 @@
     "moduleResolution": "bundler",
     "types": ["@rstest/core"]
   },
-  "include": ["tests", "rstest.config.ts"]
+  "include": ["tests", "rstest.config.mts"]
 }
diff --git a/e2e/browser-mode/fixtures/multi-project-config/rstest.config.ts b/e2e/browser-mode/fixtures/multi-project-config/rstest.config.mts
similarity index 50%
rename from e2e/browser-mode/fixtures/multi-project-config/rstest.config.ts
rename to e2e/browser-mode/fixtures/multi-project-config/rstest.config.mts
index 72cef633d..491b2b598 100644
--- a/e2e/browser-mode/fixtures/multi-project-config/rstest.config.ts
+++ b/e2e/browser-mode/fixtures/multi-project-config/rstest.config.mts
@@ -1,5 +1,5 @@
 import { defineConfig } from '@rstest/core';
 
 export default defineConfig({
-  projects: ['./project-b/rstest.config.ts', './project-a/rstest.config.ts'],
+  projects: ['./project-b/rstest.config.mts', './project-a/rstest.config.mts'],
 });
diff --git a/e2e/browser-mode/fixtures/no-tests/rstest.config.ts b/e2e/browser-mode/fixtures/no-tests/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/no-tests/rstest.config.ts
rename to e2e/browser-mode/fixtures/no-tests/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/reporter-watch/rstest.config.ts b/e2e/browser-mode/fixtures/reporter-watch/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/reporter-watch/rstest.config.ts
rename to e2e/browser-mode/fixtures/reporter-watch/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/reporter/rstest.config.ts b/e2e/browser-mode/fixtures/reporter/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/reporter/rstest.config.ts
rename to e2e/browser-mode/fixtures/reporter/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/setup-files/rstest.config.ts b/e2e/browser-mode/fixtures/setup-files/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/setup-files/rstest.config.ts
rename to e2e/browser-mode/fixtures/setup-files/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/snapshot/rstest.config.ts b/e2e/browser-mode/fixtures/snapshot/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/snapshot/rstest.config.ts
rename to e2e/browser-mode/fixtures/snapshot/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/viewport-preset/rstest.config.ts b/e2e/browser-mode/fixtures/viewport-preset/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/viewport-preset/rstest.config.ts
rename to e2e/browser-mode/fixtures/viewport-preset/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/viewport/rstest.config.ts b/e2e/browser-mode/fixtures/viewport/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/viewport/rstest.config.ts
rename to e2e/browser-mode/fixtures/viewport/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/watch-stale/rstest.config.ts b/e2e/browser-mode/fixtures/watch-stale/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/watch-stale/rstest.config.ts
rename to e2e/browser-mode/fixtures/watch-stale/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/watch/rstest.config.ts b/e2e/browser-mode/fixtures/watch/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/watch/rstest.config.ts
rename to e2e/browser-mode/fixtures/watch/rstest.config.mts
diff --git a/e2e/browser-mode/fixtures/webkit/rstest.config.ts b/e2e/browser-mode/fixtures/webkit/rstest.config.mts
similarity index 100%
rename from e2e/browser-mode/fixtures/webkit/rstest.config.ts
rename to e2e/browser-mode/fixtures/webkit/rstest.config.mts
diff --git a/e2e/build/fixtures/alias/rstest.config.ts b/e2e/build/fixtures/alias/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/alias/rstest.config.ts
rename to e2e/build/fixtures/alias/rstest.config.mts
diff --git a/e2e/build/fixtures/cssModules/rstest.config.ts b/e2e/build/fixtures/cssModules/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/cssModules/rstest.config.ts
rename to e2e/build/fixtures/cssModules/rstest.config.mts
diff --git a/e2e/build/fixtures/customOutput/rstest.config.ts b/e2e/build/fixtures/customOutput/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/customOutput/rstest.config.ts
rename to e2e/build/fixtures/customOutput/rstest.config.mts
diff --git a/e2e/build/fixtures/decorators/rstest.config.ts b/e2e/build/fixtures/decorators/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/decorators/rstest.config.ts
rename to e2e/build/fixtures/decorators/rstest.config.mts
diff --git a/e2e/build/fixtures/define/rstest.config.ts b/e2e/build/fixtures/define/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/define/rstest.config.ts
rename to e2e/build/fixtures/define/rstest.config.mts
diff --git a/e2e/build/fixtures/plugin/rstest.config.ts b/e2e/build/fixtures/plugin/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/plugin/rstest.config.ts
rename to e2e/build/fixtures/plugin/rstest.config.mts
diff --git a/e2e/build/fixtures/runtimeRequire/rstest.config.ts b/e2e/build/fixtures/runtimeRequire/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/runtimeRequire/rstest.config.ts
rename to e2e/build/fixtures/runtimeRequire/rstest.config.mts
diff --git a/e2e/build/fixtures/tools/rspack/rstest.config.ts b/e2e/build/fixtures/tools/rspack/rstest.config.mts
similarity index 100%
rename from e2e/build/fixtures/tools/rspack/rstest.config.ts
rename to e2e/build/fixtures/tools/rspack/rstest.config.mts
diff --git a/e2e/build/index.test.ts b/e2e/build/index.test.ts
index abba7c604..7258c8646 100644
--- a/e2e/build/index.test.ts
+++ b/e2e/build/index.test.ts
@@ -23,7 +23,7 @@ describe('test build config', () => {
         'run',
         `fixtures/${name}`,
         '-c',
-        `fixtures/${name}/rstest.config.ts`,
+        `fixtures/${name}/rstest.config.mts`,
       ],
       onTestFinished,
       options: {
@@ -54,7 +54,7 @@ describe('test build config', () => {
         'run',
         'fixtures/customOutput',
         '-c',
-        'fixtures/customOutput/rstest.config.ts',
+        'fixtures/customOutput/rstest.config.mts',
       ],
       onTestFinished,
       options: {
diff --git a/e2e/chaiConfigs/fixtures/rstest.config.ts b/e2e/chaiConfigs/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/chaiConfigs/fixtures/rstest.config.ts
rename to e2e/chaiConfigs/fixtures/rstest.config.mts
diff --git a/e2e/cli/initBrowser.test.ts b/e2e/cli/initBrowser.test.ts
index 2210a47c1..8a8260f7f 100644
--- a/e2e/cli/initBrowser.test.ts
+++ b/e2e/cli/initBrowser.test.ts
@@ -41,7 +41,7 @@ describe('cli init browser', () => {
     await expectExecSuccess();
 
     expect(
-      fs.existsSync(path.join(projectDir, 'rstest.browser.config.ts')),
+      fs.existsSync(path.join(projectDir, 'rstest.browser.config.mts')),
     ).toBe(true);
 
     expect(
@@ -51,7 +51,7 @@ describe('cli init browser', () => {
 
     const pkg = readJson(path.join(projectDir, 'package.json'));
     expect(pkg.scripts?.['test:browser']).toBe(
-      'rstest --config=rstest.browser.config.ts',
+      'rstest --config=rstest.browser.config.mts',
     );
   });
 });
diff --git a/e2e/dom/fixtures/rstest.config.ts b/e2e/dom/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/dom/fixtures/rstest.config.ts
rename to e2e/dom/fixtures/rstest.config.mts
diff --git a/e2e/dom/fixtures/rstest.envOptions.config.ts b/e2e/dom/fixtures/rstest.envOptions.config.mts
similarity index 100%
rename from e2e/dom/fixtures/rstest.envOptions.config.ts
rename to e2e/dom/fixtures/rstest.envOptions.config.mts
diff --git a/e2e/dom/fixtures/rstest.externals.config.ts b/e2e/dom/fixtures/rstest.externals.config.mts
similarity index 100%
rename from e2e/dom/fixtures/rstest.externals.config.ts
rename to e2e/dom/fixtures/rstest.externals.config.mts
diff --git a/e2e/dom/index.test.ts b/e2e/dom/index.test.ts
index f1ceece34..e5682bb1c 100644
--- a/e2e/dom/index.test.ts
+++ b/e2e/dom/index.test.ts
@@ -4,7 +4,7 @@ import { runCli } from './utils';
 const appFilters = 'test/App';
 const jestDomFilters = 'test/jestDom';
 
-const externalConfigArgs = ['--config', 'rstest.externals.config.ts'];
+const externalConfigArgs = ['--config', 'rstest.externals.config.mts'];
 
 describe('jsdom', () => {
   it('should run test correctly', async () => {
@@ -26,7 +26,7 @@ describe('jsdom', () => {
 
   it('should run test correctly with custom environment options', async () => {
     const { expectExecSuccess } = await runCli('test/envOptions', undefined, {
-      args: ['--config', 'rstest.envOptions.config.ts'],
+      args: ['--config', 'rstest.envOptions.config.mts'],
     });
     await expectExecSuccess();
   });
diff --git a/e2e/env/fixtures/rstest.config.ts b/e2e/env/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/env/fixtures/rstest.config.ts
rename to e2e/env/fixtures/rstest.config.mts
diff --git a/e2e/exclude/fixtures/rstest.override.config.ts b/e2e/exclude/fixtures/rstest.override.config.mts
similarity index 100%
rename from e2e/exclude/fixtures/rstest.override.config.ts
rename to e2e/exclude/fixtures/rstest.override.config.mts
diff --git a/e2e/exclude/index.test.ts b/e2e/exclude/index.test.ts
index 256b97715..eb2cbe2b1 100644
--- a/e2e/exclude/index.test.ts
+++ b/e2e/exclude/index.test.ts
@@ -59,7 +59,7 @@ describe('test exclude option', () => {
   it('should not exclude dist when override is true', async () => {
     const { expectLog, expectExecFailed } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '-c', 'rstest.override.config.ts'],
+      args: ['run', '-c', 'rstest.override.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures'),
diff --git a/e2e/externals/bundleDependencies.test.ts b/e2e/externals/bundleDependencies.test.ts
index fba51a5c8..731d319e3 100644
--- a/e2e/externals/bundleDependencies.test.ts
+++ b/e2e/externals/bundleDependencies.test.ts
@@ -27,7 +27,7 @@ describe('test bundleDependencies', () => {
         './fixtures/index.test.ts',
         '--testEnvironment=jsdom',
         '-c',
-        './fixtures/rstest.noBundleDeps.config.ts',
+        './fixtures/rstest.noBundleDeps.config.mts',
       ],
       options: {
         nodeOptions: {
@@ -52,7 +52,7 @@ describe('test bundleDependencies', () => {
         './fixtures/index.test.ts',
         '--testEnvironment=jsdom',
         '-c',
-        './fixtures/rstest.debug.config.ts',
+        './fixtures/rstest.debug.config.mts',
       ],
       options: {
         nodeOptions: {
@@ -76,7 +76,7 @@ describe('test bundleDependencies', () => {
         'run',
         './fixtures/index.test.ts',
         '-c',
-        './fixtures/rstest.bundleDeps.config.ts',
+        './fixtures/rstest.bundleDeps.config.mts',
       ],
       options: {
         nodeOptions: {
diff --git a/e2e/externals/fixtures/rstest.bundleDeps.config.ts b/e2e/externals/fixtures/rstest.bundleDeps.config.mts
similarity index 100%
rename from e2e/externals/fixtures/rstest.bundleDeps.config.ts
rename to e2e/externals/fixtures/rstest.bundleDeps.config.mts
diff --git a/e2e/externals/fixtures/rstest.debug.config.ts b/e2e/externals/fixtures/rstest.debug.config.mts
similarity index 100%
rename from e2e/externals/fixtures/rstest.debug.config.ts
rename to e2e/externals/fixtures/rstest.debug.config.mts
diff --git a/e2e/externals/fixtures/rstest.lodash.config.ts b/e2e/externals/fixtures/rstest.lodash.config.mts
similarity index 100%
rename from e2e/externals/fixtures/rstest.lodash.config.ts
rename to e2e/externals/fixtures/rstest.lodash.config.mts
diff --git a/e2e/externals/fixtures/rstest.noBundleDeps.config.ts b/e2e/externals/fixtures/rstest.noBundleDeps.config.mts
similarity index 100%
rename from e2e/externals/fixtures/rstest.noBundleDeps.config.ts
rename to e2e/externals/fixtures/rstest.noBundleDeps.config.mts
diff --git a/e2e/externals/interop.test.ts b/e2e/externals/interop.test.ts
index 721292f11..3a5a64a14 100644
--- a/e2e/externals/interop.test.ts
+++ b/e2e/externals/interop.test.ts
@@ -57,7 +57,7 @@ describe('test interop', () => {
               './fixtures/interopLodash',
               '--testEnvironment=node',
               '-c',
-              './fixtures/rstest.lodash.config.ts',
+              './fixtures/rstest.lodash.config.mts',
             ]
           : ['run', './fixtures/interopLodash', '--testEnvironment=node'],
       options: {
diff --git a/e2e/in-source/fixtures/rstest.config.ts b/e2e/in-source/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/in-source/fixtures/rstest.config.ts
rename to e2e/in-source/fixtures/rstest.config.mts
diff --git a/e2e/lifecycle/rstest.config.ts b/e2e/lifecycle/rstest.config.mts
similarity index 100%
rename from e2e/lifecycle/rstest.config.ts
rename to e2e/lifecycle/rstest.config.mts
diff --git a/e2e/mock/fixtures/reRexports/rstest.config.ts b/e2e/mock/fixtures/reRexports/rstest.config.mts
similarity index 100%
rename from e2e/mock/fixtures/reRexports/rstest.config.ts
rename to e2e/mock/fixtures/reRexports/rstest.config.mts
diff --git a/e2e/mock/fixtures/unmock/rstest.config.ts b/e2e/mock/fixtures/unmock/rstest.config.mts
similarity index 100%
rename from e2e/mock/fixtures/unmock/rstest.config.ts
rename to e2e/mock/fixtures/unmock/rstest.config.mts
diff --git a/e2e/projects/coverage.test.ts b/e2e/projects/coverage.test.ts
index ae2d3c4c5..4207ae7d8 100644
--- a/e2e/projects/coverage.test.ts
+++ b/e2e/projects/coverage.test.ts
@@ -11,7 +11,7 @@ describe('test projects coverage', () => {
   it('should run projects correctly with coverage', async () => {
     const { cli, expectExecSuccess } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '--globals', '-c', 'rstest.coverage.config.ts'],
+      args: ['run', '--globals', '-c', 'rstest.coverage.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures'),
@@ -50,7 +50,7 @@ describe('test projects coverage', () => {
   it('should run projects correctly with coverage.include', async () => {
     const { cli, expectExecSuccess } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '--globals', '-c', 'rstest.coverage.include.config.ts'],
+      args: ['run', '--globals', '-c', 'rstest.coverage.include.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures'),
diff --git a/e2e/projects/fixtures-shard/packages/client-vue/rstest.config.ts b/e2e/projects/fixtures-shard/packages/client-vue/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures-shard/packages/client-vue/rstest.config.ts
rename to e2e/projects/fixtures-shard/packages/client-vue/rstest.config.mts
diff --git a/e2e/projects/fixtures-shard/packages/client/rstest.config.ts b/e2e/projects/fixtures-shard/packages/client/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures-shard/packages/client/rstest.config.ts
rename to e2e/projects/fixtures-shard/packages/client/rstest.config.mts
diff --git a/e2e/projects/fixtures-shard/rstest.config.ts b/e2e/projects/fixtures-shard/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures-shard/rstest.config.ts
rename to e2e/projects/fixtures-shard/rstest.config.mts
diff --git a/e2e/projects/fixtures/extends/rstest.config.ts b/e2e/projects/fixtures/extends/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures/extends/rstest.config.ts
rename to e2e/projects/fixtures/extends/rstest.config.mts
diff --git a/e2e/projects/fixtures/packages/client-vue/rstest.config.ts b/e2e/projects/fixtures/packages/client-vue/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures/packages/client-vue/rstest.config.ts
rename to e2e/projects/fixtures/packages/client-vue/rstest.config.mts
diff --git a/e2e/projects/fixtures/packages/client/rstest.config.ts b/e2e/projects/fixtures/packages/client/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures/packages/client/rstest.config.ts
rename to e2e/projects/fixtures/packages/client/rstest.config.mts
diff --git a/e2e/projects/fixtures/rstest.404.config.ts b/e2e/projects/fixtures/rstest.404.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.404.config.ts
rename to e2e/projects/fixtures/rstest.404.config.mts
diff --git a/e2e/projects/fixtures/rstest.config.ts b/e2e/projects/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.config.ts
rename to e2e/projects/fixtures/rstest.config.mts
diff --git a/e2e/projects/fixtures/rstest.coverage.config.ts b/e2e/projects/fixtures/rstest.coverage.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.coverage.config.ts
rename to e2e/projects/fixtures/rstest.coverage.config.mts
diff --git a/e2e/projects/fixtures/rstest.coverage.include.config.ts b/e2e/projects/fixtures/rstest.coverage.include.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.coverage.include.config.ts
rename to e2e/projects/fixtures/rstest.coverage.include.config.mts
diff --git a/e2e/projects/fixtures/rstest.hideSkippedTestFiles.config.ts b/e2e/projects/fixtures/rstest.hideSkippedTestFiles.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.hideSkippedTestFiles.config.ts
rename to e2e/projects/fixtures/rstest.hideSkippedTestFiles.config.mts
diff --git a/e2e/projects/fixtures/rstest.inline.config.ts b/e2e/projects/fixtures/rstest.inline.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.inline.config.ts
rename to e2e/projects/fixtures/rstest.inline.config.mts
diff --git a/e2e/projects/fixtures/rstest.projectConfig.config.ts b/e2e/projects/fixtures/rstest.projectConfig.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.projectConfig.config.ts
rename to e2e/projects/fixtures/rstest.projectConfig.config.mts
diff --git a/e2e/projects/fixtures/rstest.slowTest.config.ts b/e2e/projects/fixtures/rstest.slowTest.config.mts
similarity index 100%
rename from e2e/projects/fixtures/rstest.slowTest.config.ts
rename to e2e/projects/fixtures/rstest.slowTest.config.mts
diff --git a/e2e/projects/index.test.ts b/e2e/projects/index.test.ts
index 415cacd1b..5279d54c0 100644
--- a/e2e/projects/index.test.ts
+++ b/e2e/projects/index.test.ts
@@ -51,7 +51,7 @@ describe('test projects', () => {
   it('should run project correctly with specified config root', async () => {
     const { cli, expectExecSuccess } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '--globals', '-c', 'packages/client/rstest.config.ts'],
+      args: ['run', '--globals', '-c', 'packages/client/rstest.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures'),
@@ -78,7 +78,7 @@ describe('test projects', () => {
   it('should run projects fail when project not found', async () => {
     const { expectExecFailed, expectStderrLog } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '-c', 'rstest.404.config.ts'],
+      args: ['run', '-c', 'rstest.404.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures'),
@@ -151,7 +151,7 @@ describe('test projects', () => {
         args: [
           'run',
           '-c',
-          'rstest.projectConfig.config.ts',
+          'rstest.projectConfig.config.mts',
           '--reporter',
           'verbose',
         ],
@@ -184,7 +184,7 @@ describe('test projects', () => {
         args: [
           'run',
           '-c',
-          'rstest.slowTest.config.ts',
+          'rstest.slowTest.config.mts',
           '--reporter',
           'verbose',
         ],
@@ -210,7 +210,7 @@ describe('test projects', () => {
     it('should respect hideSkippedTestFiles per project', async () => {
       const { cli, expectExecSuccess } = await runRstestCli({
         command: 'rstest',
-        args: ['run', '-c', 'rstest.hideSkippedTestFiles.config.ts'],
+        args: ['run', '-c', 'rstest.hideSkippedTestFiles.config.mts'],
         options: {
           nodeOptions: {
             cwd: join(__dirname, 'fixtures'),
diff --git a/e2e/projects/inline.test.ts b/e2e/projects/inline.test.ts
index 80a12cb9f..7d1e6d054 100644
--- a/e2e/projects/inline.test.ts
+++ b/e2e/projects/inline.test.ts
@@ -10,7 +10,7 @@ describe('test projects inline projectConfig', () => {
   it('should run projects correctly with inline projectConfig', async () => {
     const { cli, expectExecSuccess } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '-c', 'rstest.inline.config.ts'],
+      args: ['run', '-c', 'rstest.inline.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures'),
diff --git a/e2e/reporter/fixtures-merge/rstest.coverage.config.ts b/e2e/reporter/fixtures-merge/rstest.coverage.config.mts
similarity index 100%
rename from e2e/reporter/fixtures-merge/rstest.coverage.config.ts
rename to e2e/reporter/fixtures-merge/rstest.coverage.config.mts
diff --git a/e2e/reporter/md.test.ts b/e2e/reporter/md.test.ts
index 012640b5b..db2f59309 100644
--- a/e2e/reporter/md.test.ts
+++ b/e2e/reporter/md.test.ts
@@ -25,7 +25,7 @@ describe('md', () => {
   }) => {
     const { cli } = await runRstestCli({
       command: 'rstest',
-      args: ['run', 'agent-md/index', '-c', './rstest.agentMd.config.ts'],
+      args: ['run', 'agent-md/index', '-c', './rstest.agentMd.config.mts'],
       onTestFinished,
       unsetEnv: UNSET_ENV,
       options: {
@@ -124,7 +124,7 @@ describe('md', () => {
         'run',
         'agent-md/snapshotMismatch',
         '-c',
-        './rstest.agentMd.snapshotMismatch.config.ts',
+        './rstest.agentMd.snapshotMismatch.config.mts',
       ],
       onTestFinished,
       unsetEnv: UNSET_ENV,
@@ -226,7 +226,7 @@ describe('md', () => {
         'run',
         'agent-md/console',
         '-c',
-        './rstest.agentMd.console.config.ts',
+        './rstest.agentMd.console.config.mts',
       ],
       onTestFinished,
       unsetEnv: UNSET_ENV,
@@ -341,7 +341,12 @@ describe('md', () => {
   it('formats thrown errors', async ({ onTestFinished }) => {
     const { cli } = await runRstestCli({
       command: 'rstest',
-      args: ['run', 'agent-md/throw', '-c', './rstest.agentMd.throw.config.ts'],
+      args: [
+        'run',
+        'agent-md/throw',
+        '-c',
+        './rstest.agentMd.throw.config.mts',
+      ],
       onTestFinished,
       unsetEnv: UNSET_ENV,
       options: {
@@ -430,7 +435,7 @@ describe('md', () => {
         'run',
         'agent-md/timeout',
         '-c',
-        './rstest.agentMd.timeout.config.ts',
+        './rstest.agentMd.timeout.config.mts',
       ],
       onTestFinished,
       unsetEnv: UNSET_ENV,
@@ -522,7 +527,7 @@ describe('md', () => {
         'run',
         'agent-md/truncated',
         '-c',
-        './rstest.agentMd.truncated.config.ts',
+        './rstest.agentMd.truncated.config.mts',
       ],
       onTestFinished,
       unsetEnv: UNSET_ENV,
@@ -700,7 +705,7 @@ describe('md', () => {
   it('omits lists on non-focused passing runs', async ({ onTestFinished }) => {
     const { cli } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '-c', './rstest.agentMd.pass.config.ts'],
+      args: ['run', '-c', './rstest.agentMd.pass.config.mts'],
       onTestFinished,
       unsetEnv: UNSET_ENV,
       options: {
@@ -769,7 +774,7 @@ describe('md', () => {
   }) => {
     const { cli } = await runRstestCli({
       command: 'rstest',
-      args: ['run', 'agent-md-pass', '-c', './rstest.agentMd.pass.config.ts'],
+      args: ['run', 'agent-md-pass', '-c', './rstest.agentMd.pass.config.mts'],
       onTestFinished,
       unsetEnv: UNSET_ENV,
       options: {
@@ -861,7 +866,7 @@ describe('md', () => {
         'run',
         'agent-md/unhandled',
         '-c',
-        './rstest.agentMd.unhandled.config.ts',
+        './rstest.agentMd.unhandled.config.mts',
       ],
       onTestFinished,
       unsetEnv: UNSET_ENV,
diff --git a/e2e/reporter/mergeReports.test.ts b/e2e/reporter/mergeReports.test.ts
index 2ffdb895b..9ed38b238 100644
--- a/e2e/reporter/mergeReports.test.ts
+++ b/e2e/reporter/mergeReports.test.ts
@@ -95,7 +95,7 @@ describe('merge-reports', () => {
         '1/2',
         '--reporter=blob',
         '-c',
-        'rstest.coverage.config.ts',
+        'rstest.coverage.config.mts',
       ],
       options: {
         nodeOptions: {
@@ -114,7 +114,7 @@ describe('merge-reports', () => {
         '2/2',
         '--reporter=blob',
         '-c',
-        'rstest.coverage.config.ts',
+        'rstest.coverage.config.mts',
       ],
       options: {
         nodeOptions: {
@@ -128,7 +128,12 @@ describe('merge-reports', () => {
     const { cli: mergeCli, expectExecSuccess: mergeSuccess } =
       await runRstestCli({
         command: 'rstest',
-        args: ['merge-reports', '--cleanup', '-c', 'rstest.coverage.config.ts'],
+        args: [
+          'merge-reports',
+          '--cleanup',
+          '-c',
+          'rstest.coverage.config.mts',
+        ],
         options: {
           nodeOptions: {
             cwd: fixturesDir,
diff --git a/e2e/reporter/rstest.agentMd.config.ts b/e2e/reporter/rstest.agentMd.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.config.ts
rename to e2e/reporter/rstest.agentMd.config.mts
diff --git a/e2e/reporter/rstest.agentMd.console.config.ts b/e2e/reporter/rstest.agentMd.console.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.console.config.ts
rename to e2e/reporter/rstest.agentMd.console.config.mts
diff --git a/e2e/reporter/rstest.agentMd.pass.config.ts b/e2e/reporter/rstest.agentMd.pass.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.pass.config.ts
rename to e2e/reporter/rstest.agentMd.pass.config.mts
diff --git a/e2e/reporter/rstest.agentMd.snapshotMismatch.config.ts b/e2e/reporter/rstest.agentMd.snapshotMismatch.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.snapshotMismatch.config.ts
rename to e2e/reporter/rstest.agentMd.snapshotMismatch.config.mts
diff --git a/e2e/reporter/rstest.agentMd.throw.config.ts b/e2e/reporter/rstest.agentMd.throw.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.throw.config.ts
rename to e2e/reporter/rstest.agentMd.throw.config.mts
diff --git a/e2e/reporter/rstest.agentMd.timeout.config.ts b/e2e/reporter/rstest.agentMd.timeout.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.timeout.config.ts
rename to e2e/reporter/rstest.agentMd.timeout.config.mts
diff --git a/e2e/reporter/rstest.agentMd.truncated.config.ts b/e2e/reporter/rstest.agentMd.truncated.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.truncated.config.ts
rename to e2e/reporter/rstest.agentMd.truncated.config.mts
diff --git a/e2e/reporter/rstest.agentMd.unhandled.config.ts b/e2e/reporter/rstest.agentMd.unhandled.config.mts
similarity index 100%
rename from e2e/reporter/rstest.agentMd.unhandled.config.ts
rename to e2e/reporter/rstest.agentMd.unhandled.config.mts
diff --git a/e2e/reporter/rstest.config.ts b/e2e/reporter/rstest.config.mts
similarity index 100%
rename from e2e/reporter/rstest.config.ts
rename to e2e/reporter/rstest.config.mts
diff --git a/e2e/rootDir/fixtures/rstest.config.ts b/e2e/rootDir/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/rootDir/fixtures/rstest.config.ts
rename to e2e/rootDir/fixtures/rstest.config.mts
diff --git a/e2e/setup/fixtures/basic/rstest.config.ts b/e2e/setup/fixtures/basic/rstest.config.mts
similarity index 100%
rename from e2e/setup/fixtures/basic/rstest.config.ts
rename to e2e/setup/fixtures/basic/rstest.config.mts
diff --git a/e2e/setup/fixtures/error/rstest.config.ts b/e2e/setup/fixtures/error/rstest.config.mts
similarity index 100%
rename from e2e/setup/fixtures/error/rstest.config.ts
rename to e2e/setup/fixtures/error/rstest.config.mts
diff --git a/e2e/setup/fixtures/no-isolate/rstest.config.ts b/e2e/setup/fixtures/no-isolate/rstest.config.mts
similarity index 100%
rename from e2e/setup/fixtures/no-isolate/rstest.config.ts
rename to e2e/setup/fixtures/no-isolate/rstest.config.mts
diff --git a/e2e/setup/fixtures/package-name/rstest.config.ts b/e2e/setup/fixtures/package-name/rstest.config.mts
similarity index 100%
rename from e2e/setup/fixtures/package-name/rstest.config.ts
rename to e2e/setup/fixtures/package-name/rstest.config.mts
diff --git a/e2e/setup/fixtures/package-name/rstest.esm.config.ts b/e2e/setup/fixtures/package-name/rstest.esm.config.mts
similarity index 100%
rename from e2e/setup/fixtures/package-name/rstest.esm.config.ts
rename to e2e/setup/fixtures/package-name/rstest.esm.config.mts
diff --git a/e2e/setup/fixtures/package-name/rstest.fileProtocol.config.ts b/e2e/setup/fixtures/package-name/rstest.fileProtocol.config.mts
similarity index 100%
rename from e2e/setup/fixtures/package-name/rstest.fileProtocol.config.ts
rename to e2e/setup/fixtures/package-name/rstest.fileProtocol.config.mts
diff --git a/e2e/setup/index.test.ts b/e2e/setup/index.test.ts
index 77f297692..05d4f317b 100644
--- a/e2e/setup/index.test.ts
+++ b/e2e/setup/index.test.ts
@@ -60,7 +60,7 @@ describe('test setup file', async () => {
   it('should resolve setup file correctly when setupFiles path with file protocol', async () => {
     const { expectExecSuccess } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '-c', 'rstest.fileProtocol.config.ts'],
+      args: ['run', '-c', 'rstest.fileProtocol.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures/package-name'),
@@ -73,7 +73,7 @@ describe('test setup file', async () => {
   it('should resolve setup file correctly when setupFile is pure es module', async () => {
     const { expectExecSuccess } = await runRstestCli({
       command: 'rstest',
-      args: ['run', '-c', 'rstest.esm.config.ts'],
+      args: ['run', '-c', 'rstest.esm.config.mts'],
       options: {
         nodeOptions: {
           cwd: join(__dirname, 'fixtures/package-name'),
diff --git a/e2e/singleton/fixtures/rstest.config.ts b/e2e/singleton/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/singleton/fixtures/rstest.config.ts
rename to e2e/singleton/fixtures/rstest.config.mts
diff --git a/e2e/snapshot/file.test.ts b/e2e/snapshot/file.test.ts
index 428ec42a3..2b19049f9 100644
--- a/e2e/snapshot/file.test.ts
+++ b/e2e/snapshot/file.test.ts
@@ -81,7 +81,7 @@ describe('test snapshot', () => {
         'fixtures/index.test.ts',
         '-u',
         '-c',
-        'fixtures/rstest.snapshotPath.config.ts',
+        'fixtures/rstest.snapshotPath.config.mts',
       ],
       options: {
         nodeOptions: {
diff --git a/e2e/snapshot/fixtures/rstest.options.config.ts b/e2e/snapshot/fixtures/rstest.options.config.mts
similarity index 100%
rename from e2e/snapshot/fixtures/rstest.options.config.ts
rename to e2e/snapshot/fixtures/rstest.options.config.mts
diff --git a/e2e/snapshot/fixtures/rstest.snapshotPath.config.ts b/e2e/snapshot/fixtures/rstest.snapshotPath.config.mts
similarity index 100%
rename from e2e/snapshot/fixtures/rstest.snapshotPath.config.ts
rename to e2e/snapshot/fixtures/rstest.snapshotPath.config.mts
diff --git a/e2e/snapshot/options.test.ts b/e2e/snapshot/options.test.ts
index f029b7e51..bd38e9feb 100644
--- a/e2e/snapshot/options.test.ts
+++ b/e2e/snapshot/options.test.ts
@@ -9,7 +9,7 @@ const __dirname = dirname(__filename);
 it('snapshotFormat', async () => {
   const { expectExecSuccess } = await runRstestCli({
     command: 'rstest',
-    args: ['run', 'options.test.ts', '-c', 'rstest.options.config.ts'],
+    args: ['run', 'options.test.ts', '-c', 'rstest.options.config.mts'],
     options: {
       nodeOptions: {
         cwd: join(__dirname, 'fixtures'),
diff --git a/e2e/ssr/fixtures/rstest.config.ts b/e2e/ssr/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/ssr/fixtures/rstest.config.ts
rename to e2e/ssr/fixtures/rstest.config.mts
diff --git a/e2e/vue/fixtures/rstest.config.ts b/e2e/vue/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/vue/fixtures/rstest.config.ts
rename to e2e/vue/fixtures/rstest.config.mts
diff --git a/e2e/watch/fixtures-setup/rstest.config.ts b/e2e/watch/fixtures-setup/rstest.config.mts
similarity index 100%
rename from e2e/watch/fixtures-setup/rstest.config.ts
rename to e2e/watch/fixtures-setup/rstest.config.mts
diff --git a/e2e/watch/fixtures-shortcuts/rstest.config.ts b/e2e/watch/fixtures-shortcuts/rstest.config.mts
similarity index 100%
rename from e2e/watch/fixtures-shortcuts/rstest.config.ts
rename to e2e/watch/fixtures-shortcuts/rstest.config.mts
diff --git a/e2e/watch/fixtures/rstest.config.ts b/e2e/watch/fixtures/rstest.config.mts
similarity index 100%
rename from e2e/watch/fixtures/rstest.config.ts
rename to e2e/watch/fixtures/rstest.config.mts
diff --git a/package.json b/package.json
index 71371506f..784277868 100644
--- a/package.json
+++ b/package.json
@@ -22,7 +22,7 @@
   },
   "nano-staged": {
     "*.{md,mdx,css,less,scss,json,jsonc,json5}": "prettier --write",
-    "*.{js,jsx,ts,tsx,mjs,cjs}": [
+    "*.{js,jsx,ts,tsx,mjs,mts,cjs,cts}": [
       "biome check --write"
     ],
     "package.json": [
diff --git a/packages/adapter-rsbuild/rslib.config.mts b/packages/adapter-rsbuild/rslib.config.mts
index be81bf880..bed11e235 100644
--- a/packages/adapter-rsbuild/rslib.config.mts
+++ b/packages/adapter-rsbuild/rslib.config.mts
@@ -1,5 +1,5 @@
 import { defineConfig } from '@rslib/core';
-import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin.ts';
+import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin';
 
 export default defineConfig({
   lib: [
diff --git a/packages/adapter-rslib/rslib.config.mts b/packages/adapter-rslib/rslib.config.mts
index 25f5f699d..a12fb7d96 100644
--- a/packages/adapter-rslib/rslib.config.mts
+++ b/packages/adapter-rslib/rslib.config.mts
@@ -1,5 +1,5 @@
 import { defineConfig } from '@rslib/core';
-import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin.ts';
+import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin';
 
 export default defineConfig({
   lib: [
diff --git a/packages/adapter-rspack/rslib.config.mts b/packages/adapter-rspack/rslib.config.mts
index 25f5f699d..a12fb7d96 100644
--- a/packages/adapter-rspack/rslib.config.mts
+++ b/packages/adapter-rspack/rslib.config.mts
@@ -1,5 +1,5 @@
 import { defineConfig } from '@rslib/core';
-import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin.ts';
+import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin';
 
 export default defineConfig({
   lib: [
diff --git a/packages/core/src/cli/init/browser/create.ts b/packages/core/src/cli/init/browser/create.ts
index 2ae8be8ac..502889cb0 100644
--- a/packages/core/src/cli/init/browser/create.ts
+++ b/packages/core/src/cli/init/browser/create.ts
@@ -356,7 +356,7 @@ async function generateFiles(
 
   // 4. Update package.json scripts
   updatePackageJsonScripts(cwd, {
-    'test:browser': 'rstest --config=rstest.browser.config.ts',
+    'test:browser': 'rstest --config=rstest.browser.config.mts',
   });
 
   // 5. Add devDependencies to package.json
diff --git a/packages/core/src/cli/init/browser/templates.ts b/packages/core/src/cli/init/browser/templates.ts
index ff56a178d..056a47032 100644
--- a/packages/core/src/cli/init/browser/templates.ts
+++ b/packages/core/src/cli/init/browser/templates.ts
@@ -5,7 +5,7 @@ export type Framework = 'react' | 'vanilla';
 export type BrowserProvider = 'playwright';
 
 /**
- * Get rstest.config.ts template content.
+ * Get rstest.config.mts template content.
  */
 export function getConfigTemplate(): string {
   return `import { defineConfig } from '@rstest/core';
@@ -233,5 +233,5 @@ export function getRunCommand(agent: Agent): string {
  * Get the config file name to create.
  */
 export function getConfigFileName(): string {
-  return 'rstest.browser.config.ts';
+  return 'rstest.browser.config.mts';
 }
diff --git a/packages/core/src/utils/constants.ts b/packages/core/src/utils/constants.ts
index 1a2cda002..b8d6316ea 100644
--- a/packages/core/src/utils/constants.ts
+++ b/packages/core/src/utils/constants.ts
@@ -43,10 +43,10 @@ export const getTempRstestOutputDirGlob = (distPathRoot: string): string => {
 };
 
 export const DEFAULT_CONFIG_EXTENSIONS = [
-  '.js',
-  '.ts',
-  '.mjs',
   '.mts',
+  '.mjs',
+  '.ts',
+  '.js',
   '.cjs',
   '.cts',
 ] as const;
diff --git a/packages/vscode/rslib.config.mts b/packages/vscode/rslib.config.mts
index a6aa43e38..630a7f036 100644
--- a/packages/vscode/rslib.config.mts
+++ b/packages/vscode/rslib.config.mts
@@ -1,5 +1,5 @@
 import { defineConfig } from '@rslib/core';
-import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin.ts';
+import { rsdoctorCIPlugin } from '../../scripts/rsdoctorPlugin';
 
 export default defineConfig({
   lib: [
diff --git a/packages/vscode/sample/rstest.config.ts b/packages/vscode/sample/rstest.config.mts
similarity index 100%
rename from packages/vscode/sample/rstest.config.ts
rename to packages/vscode/sample/rstest.config.mts
diff --git a/packages/vscode/tests/fixtures/workspace-1/rstest.config.ts b/packages/vscode/tests/fixtures/workspace-1/rstest.config.mts
similarity index 100%
rename from packages/vscode/tests/fixtures/workspace-1/rstest.config.ts
rename to packages/vscode/tests/fixtures/workspace-1/rstest.config.mts
diff --git a/packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.ts b/packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.mts
similarity index 100%
rename from packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.ts
rename to packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.mts
diff --git a/packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.ts b/packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.mts
similarity index 100%
rename from packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.ts
rename to packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.mts
diff --git a/packages/vscode/tests/suite/workspace.test.ts b/packages/vscode/tests/suite/workspace.test.ts
index caddb747d..0e8e61c72 100644
--- a/packages/vscode/tests/suite/workspace.test.ts
+++ b/packages/vscode/tests/suite/workspace.test.ts
@@ -69,7 +69,7 @@ suite('Workspace discover suite', () => {
           label: 'workspace-2',
           children: [
             {
-              label: 'folder/project-2/rstest.config.ts',
+              label: 'folder/project-2/rstest.config.mts',
               children: [
                 {
                   label: 'test',
@@ -78,7 +78,7 @@ suite('Workspace discover suite', () => {
               ],
             },
             {
-              label: 'project-1/rstest.config.ts',
+              label: 'project-1/rstest.config.mts',
               children: [
                 {
                   label: 'test',
@@ -93,13 +93,13 @@ suite('Workspace discover suite', () => {
 
     // remove config file
     await fs.rename(
-      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.ts'),
+      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.mts'),
       path.resolve(fixturesRoot, 'workspace-2/project-1/foo.config.ts'),
     );
     await fs.rename(
       path.resolve(
         fixturesRoot,
-        'workspace-2/folder/project-2/rstest.config.ts',
+        'workspace-2/folder/project-2/rstest.config.mts',
       ),
       path.resolve(fixturesRoot, 'workspace-2/folder/project-2/bar.config.ts'),
     );
@@ -193,13 +193,13 @@ suite('Workspace discover suite', () => {
     // restore config file and configFileGlobPattern
     await fs.rename(
       path.resolve(fixturesRoot, 'workspace-2/project-1/foo.config.ts'),
-      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.ts'),
+      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.mts'),
     );
     await fs.rename(
       path.resolve(fixturesRoot, 'workspace-2/folder/project-2/foo.config.ts'),
       path.resolve(
         fixturesRoot,
-        'workspace-2/folder/project-2/rstest.config.ts',
+        'workspace-2/folder/project-2/rstest.config.mts',
       ),
     );
     await config.update('configFileGlobPattern', undefined);
@@ -226,7 +226,7 @@ suite('Workspace discover suite', () => {
           label: 'workspace-2',
           children: [
             {
-              label: 'folder/project-2/rstest.config.ts',
+              label: 'folder/project-2/rstest.config.mts',
               children: [
                 {
                   label: 'test',
@@ -235,7 +235,7 @@ suite('Workspace discover suite', () => {
               ],
             },
             {
-              label: 'project-1/rstest.config.ts',
+              label: 'project-1/rstest.config.mts',
               children: [
                 {
                   label: 'test',

From 221b7267bfadb984718f28b3266d628f7c092333 Mon Sep 17 00:00:00 2001
From: 9aoy <9aoyuao@gmail.com>
Date: Thu, 26 Mar 2026 11:28:58 +0800
Subject: [PATCH 2/3] fix: test

---
 packages/vscode/sample/{rstest.config.mts => rstest.config.ts}    | 0
 .../fixtures/workspace-1/{rstest.config.mts => rstest.config.ts}  | 0
 .../folder/project-2/{rstest.config.mts => rstest.config.ts}      | 0
 .../workspace-2/project-1/{rstest.config.mts => rstest.config.ts} | 0
 4 files changed, 0 insertions(+), 0 deletions(-)
 rename packages/vscode/sample/{rstest.config.mts => rstest.config.ts} (100%)
 rename packages/vscode/tests/fixtures/workspace-1/{rstest.config.mts => rstest.config.ts} (100%)
 rename packages/vscode/tests/fixtures/workspace-2/folder/project-2/{rstest.config.mts => rstest.config.ts} (100%)
 rename packages/vscode/tests/fixtures/workspace-2/project-1/{rstest.config.mts => rstest.config.ts} (100%)

diff --git a/packages/vscode/sample/rstest.config.mts b/packages/vscode/sample/rstest.config.ts
similarity index 100%
rename from packages/vscode/sample/rstest.config.mts
rename to packages/vscode/sample/rstest.config.ts
diff --git a/packages/vscode/tests/fixtures/workspace-1/rstest.config.mts b/packages/vscode/tests/fixtures/workspace-1/rstest.config.ts
similarity index 100%
rename from packages/vscode/tests/fixtures/workspace-1/rstest.config.mts
rename to packages/vscode/tests/fixtures/workspace-1/rstest.config.ts
diff --git a/packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.mts b/packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.ts
similarity index 100%
rename from packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.mts
rename to packages/vscode/tests/fixtures/workspace-2/folder/project-2/rstest.config.ts
diff --git a/packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.mts b/packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.ts
similarity index 100%
rename from packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.mts
rename to packages/vscode/tests/fixtures/workspace-2/project-1/rstest.config.ts

From d858bfdad0a2456aeed3e506333d72e1a080bacd Mon Sep 17 00:00:00 2001
From: 9aoy <9aoyuao@gmail.com>
Date: Thu, 26 Mar 2026 11:54:03 +0800
Subject: [PATCH 3/3] fix: vscode test

---
 packages/vscode/tests/suite/workspace.test.ts | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/packages/vscode/tests/suite/workspace.test.ts b/packages/vscode/tests/suite/workspace.test.ts
index 0e8e61c72..caddb747d 100644
--- a/packages/vscode/tests/suite/workspace.test.ts
+++ b/packages/vscode/tests/suite/workspace.test.ts
@@ -69,7 +69,7 @@ suite('Workspace discover suite', () => {
           label: 'workspace-2',
           children: [
             {
-              label: 'folder/project-2/rstest.config.mts',
+              label: 'folder/project-2/rstest.config.ts',
               children: [
                 {
                   label: 'test',
@@ -78,7 +78,7 @@ suite('Workspace discover suite', () => {
               ],
             },
             {
-              label: 'project-1/rstest.config.mts',
+              label: 'project-1/rstest.config.ts',
               children: [
                 {
                   label: 'test',
@@ -93,13 +93,13 @@ suite('Workspace discover suite', () => {
 
     // remove config file
     await fs.rename(
-      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.mts'),
+      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.ts'),
       path.resolve(fixturesRoot, 'workspace-2/project-1/foo.config.ts'),
     );
     await fs.rename(
       path.resolve(
         fixturesRoot,
-        'workspace-2/folder/project-2/rstest.config.mts',
+        'workspace-2/folder/project-2/rstest.config.ts',
       ),
       path.resolve(fixturesRoot, 'workspace-2/folder/project-2/bar.config.ts'),
     );
@@ -193,13 +193,13 @@ suite('Workspace discover suite', () => {
     // restore config file and configFileGlobPattern
     await fs.rename(
       path.resolve(fixturesRoot, 'workspace-2/project-1/foo.config.ts'),
-      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.mts'),
+      path.resolve(fixturesRoot, 'workspace-2/project-1/rstest.config.ts'),
     );
     await fs.rename(
       path.resolve(fixturesRoot, 'workspace-2/folder/project-2/foo.config.ts'),
       path.resolve(
         fixturesRoot,
-        'workspace-2/folder/project-2/rstest.config.mts',
+        'workspace-2/folder/project-2/rstest.config.ts',
       ),
     );
     await config.update('configFileGlobPattern', undefined);
@@ -226,7 +226,7 @@ suite('Workspace discover suite', () => {
           label: 'workspace-2',
           children: [
             {
-              label: 'folder/project-2/rstest.config.mts',
+              label: 'folder/project-2/rstest.config.ts',
               children: [
                 {
                   label: 'test',
@@ -235,7 +235,7 @@ suite('Workspace discover suite', () => {
               ],
             },
             {
-              label: 'project-1/rstest.config.mts',
+              label: 'project-1/rstest.config.ts',
               children: [
                 {
                   label: 'test',