Add dynamic token refresh and authentication error handling

packages/sdk/package.json

@@ -46,13 +46,16 @@
     "@bufbuild/buf": "^1.28.1",
     "@bufbuild/protoc-gen-es": "^1.6.0",
     "@connectrpc/protoc-gen-connect-es": "^1.4.0",
+    "@types/express": "^4.17.21",
     "@types/google-protobuf": "^3.15.5",
     "@types/long": "^4.0.1",
     "@typescript-eslint/eslint-plugin": "^6.21.0",
     "@typescript-eslint/parser": "^6.21.0",
     "@vitest/coverage-istanbul": "^0.34.5",
     "@vitest/coverage-v8": "^0.34.5",
+    "axios": "^1.7.7",
     "eslint-plugin-tsdoc": "^0.2.16",
+    "express": "^4.21.1",
     "prettier": "^2.7.1",
     "ts-node": "^10.9.1",
     "typedoc": "^0.25.13",
@@ -61,7 +64,7 @@
     "vite": "^5.0.12",
     "vite-plugin-commonjs": "^0.10.1",
     "vite-plugin-dts": "^3.9.1",
-    "vite-tsconfig-paths": "^4.2.1",
+    "vite-tsconfig-paths": "^4.3.1",
     "vitest": "^0.34.5"
   },
   "dependencies": {

packages/sdk/src/api/converter.ts

@@ -804,19 +804,28 @@ function toChangePack(pack: ChangePack<Indexable>): PbChangePack {
 }
 
 /**
- * `errorCodeOf` returns the error code of the given connect error.
+ * `errorMetadataOf` returns the error metadata of the given connect error.
  */
-export function errorCodeOf(error: ConnectError): string {
-  // NOTE(hackerwins): Currently, we only use the first detail to represent the
-  // error code.
+export function errorMetadataOf(error: ConnectError): Record<string, string> {
+  if (!(error instanceof ConnectError)) {
+    return {};
+  }
+
+  // NOTE(chacha912): Currently, we only use the first detail to represent the
+  // error metadata.
   const infos = error.findDetails(ErrorInfo);
   for (const info of infos) {
-    if (info.metadata.code) {
-      return info.metadata.code;
-    }
+    return info.metadata;
   }
 
-  return '';
+  return {};
+}
+
+/**
+ * `errorCodeOf` returns the error code of the given connect error.
+ */
+export function errorCodeOf(error: ConnectError): string {
+  return errorMetadataOf(error).code ?? '';
 }
 
 /**