fix a problem stopping "pnpm start:dev"

src/vc/did-eth-local-resolver.js

@@ -10,7 +10,7 @@ const { DIDResolutionResult } = require('did-resolver');
  *
  * Similar code resides in endorser-ch
  */
-export const didEthLocalResolver = async(did) => {
+const didEthLocalResolver = async(did) => {
   const didRegex = /^did:ethr:(0x[0-9a-fA-F]{40})$/;
   const match = did.match(didRegex);
 
@@ -43,3 +43,5 @@ export const didEthLocalResolver = async(did) => {
 
   throw new Error(`Unsupported DID format: ${did}`);
 };
+
+module.exports = { didEthLocalResolver };