chore(app/angular): add additional log outputs

this should help improving the error reporting when a user has trouble using app/angular

app/angular/src/server/angular-cli_config.ts

@@ -50,6 +50,7 @@ export function getAngularCliConfig(dirToSearch: string) {
   const fname = path.join(dirToSearch, 'angular.json');
 
   if (!fs.existsSync(fname)) {
+    logger.error(`Could not find angular.json using ${fname}`);
     return undefined;
   }
 
@@ -67,9 +68,26 @@ export function getLeadingAngularCliProject(ngCliConfig: any) {
     throw new Error('angular.json must have projects entry.');
   }
 
-  const fallbackProject = defaultProject && projects[defaultProject];
-  const firstProject = projects[Object.keys(projects)[0]];
-  return projects.storybook || fallbackProject || firstProject;
+  let projectName;
+  const firstProjectName = Object.keys(projects)[0];
+  if (projects.storybook) {
+    projectName = 'storybook';
+  } else if (defaultProject && projects[defaultProject]) {
+    projectName = defaultProject;
+  } else if (projects[firstProjectName]) {
+    projectName = firstProjectName;
+  }
+
+  const project = projects[projectName];
+  if (!project) {
+    logger.error(`Could not find angular project '${projectName}' in angular.json.`);
+  } else {
+    logger.info(`=> Using angular project '${projectName}' for configuring Storybook.`);
+  }
+  if (!project.architect.build) {
+    logger.error(`architect.build is not defined for project '${projectName}'.`);
+  }
+  return project;
 }
 
 export function getAngularCliWebpackConfigOptions(dirToSearch: Path) {
@@ -102,7 +120,7 @@ export function getAngularCliWebpackConfigOptions(dirToSearch: Path) {
       optimization: {},
       ...projectOptions,
       assets: normalizedAssets,
-      budgets
+      budgets,
     },
   };
 }