Merge pull request #22515 from storybookjs/fix/fix-error-throwing

CLI: Throw errors instead of rejecting promises

code/lib/cli/src/generators/ANGULAR/index.ts

@@ -28,10 +28,9 @@ const generator: Generator<{ projectName: string }> = async (
   const angularJSON = new AngularJSON();
 
   if (angularJSON.projectsWithoutStorybook.length === 0) {
-    paddedLog(
+    throw new Error(
       'Every project in your workspace is already set up with Storybook. There is nothing to do!'
     );
-    return Promise.reject();
   }
 
   const angularProjectName = await angularJSON.getProjectName();

code/lib/cli/src/initiate.ts

@@ -4,6 +4,7 @@ import prompts from 'prompts';
 import { telemetry } from '@storybook/telemetry';
 import { withTelemetry } from '@storybook/core-server';
 
+import dedent from 'ts-dedent';
 import { installableProjectTypes, ProjectType } from './project_types';
 import {
   detect,
@@ -161,12 +162,12 @@ const installStorybook = async <Project extends ProjectType>(
           commandLog('Adding Storybook support to your "Server" app')
         );
 
-      case ProjectType.NX /* NX */:
-        paddedLog(
-          'We have detected Nx in your project. Please use `nx g @nrwl/storybook:configuration` to add Storybook to your project.'
-        );
-        paddedLog('For more information, please see https://nx.dev/packages/storybook');
-        return Promise.reject();
+      case ProjectType.NX:
+        throw new Error(dedent`
+          We have detected Nx in your project. Please use "nx g @nrwl/storybook:configuration" to add Storybook to your project.
+          
+          For more information, please see https://nx.dev/packages/storybook
+        `);
 
       case ProjectType.SOLID:
         return solidGenerator(packageManager, npmOptions, generatorOptions).then(
@@ -200,7 +201,9 @@ const installStorybook = async <Project extends ProjectType>(
   try {
     return await runGenerator();
   } catch (err) {
-    logger.error(`\n     ${chalk.red(err.stack)}`);
+    if (err?.stack) {
+      logger.error(`\n     ${chalk.red(err.stack)}`);
+    }
     throw new HandledError(err);
   }
 };