fix(build): add named exports to esm wrapper (#176)

fixes #175

esm/index.js

@@ -1,3 +1,28 @@
-import cjsModule from '../lib/index.js';
+import cjsModule from '../lib/index.js'
 
-export default cjsModule
+const getResolver = cjsModule.getResolver
+const deployments = cjsModule.deployments
+const REGISTRY = cjsModule.REGISTRY
+const bytes32toString = cjsModule.bytes32toString
+const stringToBytes32 = cjsModule.stringToBytes32
+const EthrDidController = cjsModule.EthrDidController
+const verificationMethodTypes = cjsModule.verificationMethodTypes
+const identifierMatcher = cjsModule.identifierMatcher
+const interpretIdentifier = cjsModule.interpretIdentifier
+const Errors = cjsModule.Errors
+const EthereumDIDRegistry = cjsModule.EthereumDIDRegistry
+
+export {
+  getResolver,
+  deployments,
+  REGISTRY,
+  bytes32toString,
+  stringToBytes32,
+  EthrDidController,
+  verificationMethodTypes,
+  identifierMatcher,
+  interpretIdentifier,
+  Errors,
+  EthereumDIDRegistry,
+  cjsModule as default
+}