test_runner: support typescript files in default glob

lib/internal/test_runner/utils.js

@@ -54,8 +54,11 @@ const kMultipleCallbackInvocations = 'multipleCallbackInvocations';
 const kRegExpPattern = /^\/(.*)\/([a-z]*)$/;
 
 const kPatterns = ['test', 'test/**/*', 'test-*', '*[._-]test'];
-const kDefaultPattern = `**/{${ArrayPrototypeJoin(kPatterns, ',')}}.?(c|m)js`;
-
+const kFileExtensions = ['js', 'mjs', 'cjs'];
+if (getOptionValue('--experimental-strip-types')) {
+  ArrayPrototypePush(kFileExtensions, 'ts', 'mts', 'cts');
+}
+const kDefaultPattern = `**/{${ArrayPrototypeJoin(kPatterns, ',')}}.{${ArrayPrototypeJoin(kFileExtensions, ',')}}`;
 
 function createDeferredCallback() {
   let calledCount = 0;

test/fixtures/test-runner/matching-patterns/typescript-test.cts

@@ -0,0 +1,4 @@
+const test = require('node:test');
+
+// 'as string' ensures that type stripping actually occurs
+test('this should pass' as string);

test/fixtures/test-runner/matching-patterns/typescript-test.mts

@@ -0,0 +1,4 @@
+import { test } from 'node:test';
+
+// 'as string' ensures that type stripping actually occurs
+test('this should pass' as string);

test/fixtures/test-runner/matching-patterns/typescript-test.ts

@@ -0,0 +1,4 @@
+const test = require('node:test');
+
+// 'as string' ensures that type stripping actually occurs
+test('this should pass' as string);

test/parallel/test-runner-cli.js

@@ -44,8 +44,9 @@ for (const isolation of ['none', 'process']) {
   }
 
   {
-    // Should match files with "-test.(c|m)js" suffix.
+    // Should match files with "-test.(c|m)(j|t)s" suffix.
     const args = ['--test', '--test-reporter=tap',
+                  '--no-warnings', '--experimental-strip-types',
                   `--experimental-test-isolation=${isolation}`];
     const child = spawnSync(process.execPath, args, { cwd: join(testFixtures, 'matching-patterns') });
 
@@ -57,6 +58,9 @@ for (const isolation of ['none', 'process']) {
     assert.match(stdout, /ok 1 - this should pass/);
     assert.match(stdout, /ok 2 - this should pass/);
     assert.match(stdout, /ok 3 - this should pass/);
+    assert.match(stdout, /ok 4 - this should pass/);
+    assert.match(stdout, /ok 5 - this should pass/);
+    assert.match(stdout, /ok 6 - this should pass/);
   }
 
   {