add export

index.ts

@@ -6,6 +6,7 @@ export * from "./lib/types";
 export * from "./lib/version";
 export * from "./lib/version_parser";
 
+export * from "./lib/util/assert";
 export * from "./lib/util/buffer_xor";
 export * from "./lib/util/dfs";
 export * from "./lib/util/permutations";