diff --git a/sphinx_js/analyzer_utils.py b/sphinx_js/analyzer_utils.py
index 9fbe33f..4b1bec6 100644
--- a/sphinx_js/analyzer_utils.py
+++ b/sphinx_js/analyzer_utils.py
@@ -14,6 +14,14 @@
 def program_name_on_this_platform(program: str) -> str:
     """Return the name of the executable file on the current platform, given a
     command name with no extension."""
+
+    if os.access(program, os.X_OK):
+        return program
+
+    path = shutil.which(program)
+    if path and os.access(path, os.X_OK):
+        return path
+
     return program + ".cmd" if os.name == "nt" else program
 
 
diff --git a/sphinx_js/typedoc.py b/sphinx_js/typedoc.py
index 0bd1836..b29adfb 100644
--- a/sphinx_js/typedoc.py
+++ b/sphinx_js/typedoc.py
@@ -27,8 +27,11 @@
 
 @cache
 def typedoc_version_info(typedoc: str) -> tuple[tuple[int, ...], tuple[int, ...]]:
+    command = Command("node")
+    command.add(typedoc)
+    command.add("--version")
     result = subprocess.run(
-        [typedoc, "--version"],
+        command.make(),
         capture_output=True,
         encoding="utf8",
         check=True,