diff --git a/sjplayer/src/sjplayer/VarStoreInterface.d b/sjplayer/src/sjplayer/VarStoreInterface.d
new file mode 100644
index 0000000..cb497d4
--- /dev/null
+++ b/sjplayer/src/sjplayer/VarStoreInterface.d
@@ -0,0 +1,11 @@
+/// License: MIT
+module sjplayer.VarStoreInterface;
+
+import sjscript;
+
+///
+interface VarStoreInterface {
+ public:
+  ///
+  float opIndex(string name) const;
+}