Fix: Do not require PCA to be configured for Azure Identity default authentication.

src/graph/index.ts

@@ -5,18 +5,21 @@ export * from "./app.ts";
 export * from "./sp.ts";
 
 import { loadAuthConfig, loadConfig } from "../index.ts";
-import { Client } from "@microsoft/microsoft-graph-client";
+import { Client, AuthProvider } from "@microsoft/microsoft-graph-client";
 
 import { getMsalAuthProvider, getAzureIdentityAuthProvider } from "./auth.ts";
 
 export async function getGraphClient(): Promise<Client> {
   const config = await loadConfig();
 
-  const authConfig = await loadAuthConfig("public-config");
-  const authProvider =
-    config.authMode === "azure-identity"
-      ? getAzureIdentityAuthProvider(authConfig.tenantId, authConfig.clientId)
-      : getMsalAuthProvider(authConfig.tenantId, authConfig.clientId);
+  let authProvider: AuthProvider;
+
+  if (config.authMode === "azure-identity") {
+    authProvider = getAzureIdentityAuthProvider();
+  } else {
+    const authConfig = await loadAuthConfig("public-config");
+    authProvider = getMsalAuthProvider(authConfig.tenantId, authConfig.clientId);
+  }
 
   return Client.init({
     authProvider: authProvider,