feat Variant

packages/net/packet/variant.js

@@ -0,0 +1,24 @@
+import msgpack from 'msgpack-lite';
+
+export default function (Superclass) {
+  return class VariantPacket extends Superclass {
+
+    static pack(packet) {
+      packet.data[1] = msgpack.encode(packet.data[1]);
+      return super.pack(packet);
+    }
+
+    static get schema() {
+      return {
+        ...super.schema,
+        data: 'buffer',
+      };
+    }
+
+    static unpack(packet) {
+      const data = super.unpack(packet);
+      return msgpack.decode(data);
+    }
+
+  }
+}