chore: enhance error logging for OIDC adapter initialization (#117)

Author: zwhitfield3

lib/identity-client-adapter.js

@@ -403,11 +403,23 @@ export async function identityClientInit(env = {}, provider = null) {
       scopes: IDENTITY_SCOPE_parsed,
     });
   } catch (error) {
-    logger.error('Failed to initialize OIDC adapter', {
-      error: error.message,
+    // Extract error details from both Error instances and OAuthError objects
+    const errorMessage =
+      error?.message ?? error?.error_description ?? error?.error ?? 'Unknown error';
+    const errorDetails = {
+      error: errorMessage,
+      errorCode: error?.error,
+      errorDescription: error?.error_description,
+      statusCode: error?.statusCode,
+      endpoint: error?.endpoint,
       identityServerUrl: IDENTITY_SERVER_URL,
       description: 'Check IDENTITY_* environment variables and server connectivity',
-    });
+    };
+    // Also log the full error object for debugging
+    if (typeof error === 'object' && error !== null) {
+      errorDetails.rawError = JSON.stringify(error, null, 2);
+    }
+    logger.error('Failed to initialize OIDC adapter', errorDetails);
     throw error;
   }
 }

package.json

@@ -22,7 +22,7 @@
   "license": "ISC",
   "dependencies": {
     "@dotenvx/dotenvx": "^1.51.1",
-    "@heroku/oauth-provider-adapters-for-mcp": "^1.0.1",
+    "@heroku/oauth-provider-adapters-for-mcp": "^1.0.2",
     "@opentelemetry/api": "^1.9.0",
     "@opentelemetry/exporter-trace-otlp-http": "^0.206.0",
     "@opentelemetry/instrumentation-express": "^0.55.0",