Fix issue where tester.groups can be undefined

CHANGELOG.md

@@ -3,3 +3,4 @@
 - Fixes symbol generation when uploading Unity 6 symbols to Crashlytics.
 - Fixed SSR issues in Angular 19 by adding support for default and reqHandler exports. (#8145)
 - Added Angular 19 as supported version. (#8145)
+- Fixed `appdistribution:testers:list` raising an error when a tester is not part of any group. (#8191)

src/appdistribution/types.ts

@@ -76,7 +76,7 @@
 export interface Tester {
   name: string;
   displayName?: string;
-  groups: string[];
+  groups?: string[];
   lastActivityTime: Date;
 }
 
@@ -100,7 +100,7 @@
   inconclusiveReason?: string;
 }
 
 export function mapDeviceToExecution(device: TestDevice): DeviceExecution {
   return {
     device: {
       model: device.model,

src/commands/appdistribution-testers-list.ts

@@ -20,11 +20,11 @@
     const spinner = ora("Preparing the list of your App Distribution testers").start();
     try {
       testersResponse = await appDistroClient.listTesters(projectName, group);
     } catch (err: any) {
       spinner.fail();
       throw new FirebaseError("Failed to list testers.", {
         exit: 1,
         original: err,
       });
     }
     spinner.succeed();
@@ -47,7 +47,7 @@
 
   for (const tester of testers) {
     const name = tester.name.split("/").pop();
-    const groups = tester.groups
+    const groups = (tester.groups || [])
       .map((grp) => grp.split("/").pop())
       .sort()
       .join(";");