diff --git a/src/index.ts b/src/index.ts
index 145cb10..e701395 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -4,11 +4,16 @@ import {getImplementation} from "./getImplementation.js";
 // Thanks https://github.com/iliakan/detect-node/blob/master/index.esm.js
 const isNode = Object.prototype.toString.call(typeof process !== "undefined" ? process : 0) === "[object process]";
 
-let bls: IBls;
-try {
-  bls = await getImplementation(isNode ? "blst-native" : "herumi");
-} catch (e) {
-  bls = await getImplementation("herumi");
-}
+export const bls = async (): Promise<IBls> => {
+  let bls: IBls;
+
+  try {
+    bls = await getImplementation(isNode ? "blst-native" : "herumi");
+  } catch (e) {
+    bls = await getImplementation("herumi");
+  }
+
+  return bls;
+};
 
 export default bls;