diff --git a/tty_js.go b/tty_js.go
new file mode 100644
index 0000000..ca0fbf3
--- /dev/null
+++ b/tty_js.go
@@ -0,0 +1,23 @@
+//go:build js
+
+package keyboard
+
+import (
+	"errors"
+	"os"
+)
+
+// initInput is a no-op on js/wasm: there is no terminal to configure.
+func initInput() error { return nil }
+
+// restoreInput is a no-op on js/wasm.
+func restoreInput() error { return nil }
+
+// closeInput is a no-op on js/wasm.
+func closeInput() {}
+
+// openInputTTY reports that no controlling terminal exists on js/wasm;
+// callers supply input through explicit readers instead.
+func openInputTTY() (*os.File, error) {
+	return nil, errors.New("keyboard: no /dev/tty on js/wasm")
+}