diff --git a/src/repo2rlenv/pipelines/pr_runtime.py b/src/repo2rlenv/pipelines/pr_runtime.py
index e0546447..8dea6de3 100644
--- a/src/repo2rlenv/pipelines/pr_runtime.py
+++ b/src/repo2rlenv/pipelines/pr_runtime.py
@@ -186,6 +186,8 @@ def _reflow_pr_body(body: str) -> str:
 # documentation paths.
 _TEST_DIR_NAMES = {"test", "tests", "testing", "e2e", "__tests__"}
 _DOC_PREFIX_DIRS = {"docs", "doc", "documentation", "examples", "example"}
+# jest/vitest's default test-file names: `*.test.ts`, `*.spec.tsx`, `*.test.mjs`, ...
+_JS_TEST_FILE_RE = re.compile(r"\.(?:test|spec)\.[cm]?[jt]sx?$")
 
 
 def _path_is_test(path: str) -> bool:
@@ -198,7 +200,8 @@ def _path_is_test(path: str) -> bool:
       2. Files inside a test directory component (any path part in
          `_TEST_DIR_NAMES`) are test files.
       3. Files with a pytest-style basename (`test_*.py`, `*_test.py`,
-         `*_test.go`) are test files.
+         `*_test.go`) or a jest/vitest one (`*.test.ts`, `*.spec.tsx`) are
+         test files.
     """
     if not path:
         return False
@@ -217,8 +220,8 @@ def _path_is_test(path: str) -> bool:
     basename = parts[-1]
     return (
         (basename.startswith("test_") and basename.endswith((".py", ".js", ".ts")))
-        or basename.endswith(("_test.py", "_test.go", ".test.ts", ".test.js"))
-        or basename.endswith((".spec.ts", ".spec.js"))
+        or basename.endswith(("_test.py", "_test.go"))
+        or _JS_TEST_FILE_RE.search(basename) is not None
     )
 
 
diff --git a/tests/test_pipeline_pr_runtime.py b/tests/test_pipeline_pr_runtime.py
index e877ee0d..fde13583 100644
--- a/tests/test_pipeline_pr_runtime.py
+++ b/tests/test_pipeline_pr_runtime.py
@@ -119,6 +119,17 @@ def test_path_is_test_heuristic():
     assert not _path_is_test("src/click/testing.py")
 
 
+def test_path_is_test_matches_jsx_tsx_and_module_js_test_files():
+    # jest and vitest pick these up by default; colocated React tests are
+    # usually `.test.tsx`, so missing them dropped the PR as `no_test_patch`
+    assert _path_is_test("src/Button.test.tsx")
+    assert _path_is_test("src/Button.spec.jsx")
+    assert _path_is_test("src/util.test.mjs")
+    assert _path_is_test("src/util.spec.cts")
+    assert not _path_is_test("src/Button.tsx")
+    assert not _path_is_test("src/test.config.ts")
+
+
 def test_files_in_patch_returns_unique_paths():
     paths = _files_in_patch(_SAMPLE_DIFF)
     assert paths == ["src/foo.py", "tests/test_foo.py"]