1 files changed, 9 insertions, 3 deletions
diff --git a/cli/worker.rs b/cli/worker.rs
index 4ac1ee6a6..08367da91 100644
--- a/cli/worker.rs
+++ b/cli/worker.rs
@@ -300,9 +300,15 @@ impl MainWorker {
       let state_rc = CoreIsolate::state(&worker.isolate);
       let state = state_rc.borrow();
       let mut t = state.resource_table.borrow_mut();
-      t.add("stdin", Box::new(stdin));
-      t.add("stdout", Box::new(stdout));
-      t.add("stderr", Box::new(stderr));
+      if let Some(stream) = stdin {
+        t.add("stdin", Box::new(stream));
+      }
+      if let Some(stream) = stdout {
+        t.add("stdout", Box::new(stream));
+      }
+      if let Some(stream) = stderr {
+        t.add("stderr", Box::new(stream));
+      }
     }
     worker.execute("bootstrap.mainRuntime()")?;
     Ok(worker)