Fix bug where backends:list and backends:get command fails when no backends exists. (#6600)

Author: taeold

src/commands/frameworks-backends-get.ts

@@ -1,21 +1,15 @@
+import * as gcp from "../gcp/frameworks";
 import { Command } from "../command";
 import { Options } from "../options";
 import { needProjectId } from "../projectUtils";
-import * as gcp from "../gcp/frameworks";
 import { FirebaseError } from "../error";
 import { logger } from "../logger";
 import { ensureApiEnabled } from "../gcp/frameworks";
+import { logWarning } from "../utils";
 
 const Table = require("cli-table");
 const COLUMN_LENGTH = 20;
-const TABLE_HEAD = [
-  "Backend Id",
-  "Repository Name",
-  "Location",
-  "URL",
-  "Created Date",
-  "Updated Date",
-];
+const TABLE_HEAD = ["Backend Id", "Repository", "Location", "URL", "Created Date", "Updated Date"];
 export const command = new Command("backends:get <backendId>")
   .description("Get backend details of a Firebase project")
   .option("-l, --location <location>", "App Backend location", "-")
@@ -36,25 +30,23 @@ export const command = new Command("backends:get <backendId>")
         backendsList.push(backendInRegion);
         populateTable(backendInRegion, table);
       } else {
-        const allBackend = await gcp.listBackends(projectId, location);
-        backendsList = allBackend.backends.filter((bkd) => bkd.name.split("/").pop() === backendId);
+        const resp = await gcp.listBackends(projectId, "-");
+        const allBackends = resp.backends || [];
+        backendsList = allBackends.filter((bkd) => bkd.name.split("/").pop() === backendId);
         backendsList.forEach((bkd) => populateTable(bkd, table));
       }
-
-      if (backendsList.length !== 0) {
-        logger.info(table.toString());
-      } else {
-        logger.info();
-        logger.info(`There are no backends with id: ${backendId}`);
-      }
     } catch (err: any) {
       throw new FirebaseError(
         `Failed to get backend: ${backendId}. Please check the parameters you have provided.`,
         { original: err }
       );
     }
-
-    return backendsList;
+    if (backendsList.length === 0) {
+      logWarning(`Found no backend with id: ${backendId}`);
+      return;
+    }
+    logger.info(table.toString());
+    return backendsList[0];
   });
 
 function populateTable(backend: gcp.Backend, table: any) {

src/commands/frameworks-backends-list.ts

@@ -4,7 +4,6 @@ import { needProjectId } from "../projectUtils";
 import * as gcp from "../gcp/frameworks";
 import { FirebaseError } from "../error";
 import { logger } from "../logger";
-import { bold } from "colorette";
 import { ensureApiEnabled } from "../gcp/frameworks";
 
 const Table = require("cli-table");
@@ -25,12 +24,8 @@ export const command = new Command("backends:list")
     const backendsList: gcp.Backend[] = [];
     try {
       const backendsPerRegion = await gcp.listBackends(projectId, location);
-      backendsList.push(...backendsPerRegion.backends);
+      backendsList.push(...(backendsPerRegion.backends || []));
       populateTable(backendsList, table);
-
-      logger.info();
-      logger.info(`Backends for project ${bold(projectId)}`);
-      logger.info();
       logger.info(table.toString());
     } catch (err: any) {
       throw new FirebaseError(