1 files changed, 7 insertions, 0 deletions
diff --git a/src/wasm.h b/src/wasm.h
index c31aac9c1..485afade1 100644
--- a/src/wasm.h
+++ b/src/wasm.h
@@ -56,6 +56,13 @@
 
 namespace wasm {
 
+enum Feature : uint32_t {
+  MVP = 0,
+  Atomics = 1 << 0,
+  All = 0xffffffff,
+};
+typedef uint32_t FeatureSet;
+
 // An index in a wasm module
 typedef uint32_t Index;