From 5f1b49b806a38d2df7125f38f13846a4453d5b8b Mon Sep 17 00:00:00 2001
From: Rodrigo Rangel de Souza <sirhangell@gmail.com>
Date: Tue, 6 Oct 2026 21:13:54 -0300
Subject: [PATCH] fix(@schematics/angular): generate main.ts with
 lint-compatible error handling

Use unknown catch callback parameters and block bodies in standalone and NgModule
application templates. Cover both variants in application schematic tests.

Closes #34267
---
 .../files/module-files/src/main.ts.template       |  4 +++-
 .../files/standalone-files/src/main.ts.template   |  4 +++-
 .../schematics/angular/application/index_spec.ts  | 15 +++++++++------
 3 files changed, 15 insertions(+), 8 deletions(-)

diff --git a/packages/schematics/angular/application/files/module-files/src/main.ts.template b/packages/schematics/angular/application/files/module-files/src/main.ts.template
index 0fcb878b1e23..9274f2d1e16f 100644
--- a/packages/schematics/angular/application/files/module-files/src/main.ts.template
+++ b/packages/schematics/angular/application/files/module-files/src/main.ts.template
@@ -5,4 +5,6 @@ import { AppModule } from './app/app<%= typeSeparator %>module';
 platformBrowser().bootstrapModule(AppModule, {
   <% if (!!viewEncapsulation) { %> defaultEncapsulation: ViewEncapsulation.<%= viewEncapsulation %><% } %>
 })
-  .catch(err => console.error(err));
+  .catch((err: unknown) => {
+    console.error(err);
+  });
diff --git a/packages/schematics/angular/application/files/standalone-files/src/main.ts.template b/packages/schematics/angular/application/files/standalone-files/src/main.ts.template
index 104fe6b29ae7..d845c778226e 100644
--- a/packages/schematics/angular/application/files/standalone-files/src/main.ts.template
+++ b/packages/schematics/angular/application/files/standalone-files/src/main.ts.template
@@ -3,4 +3,6 @@ import { appConfig } from './app/app.config';
 import { App } from './app/app<%= suffix %>';
 
 bootstrapApplication(App, appConfig)
-  .catch((err) => console.error(err));
+  .catch((err: unknown) => {
+    console.error(err);
+  });
diff --git a/packages/schematics/angular/application/index_spec.ts b/packages/schematics/angular/application/index_spec.ts
index ad2ba04ff348..0236636b42b6 100644
--- a/packages/schematics/angular/application/index_spec.ts
+++ b/packages/schematics/angular/application/index_spec.ts
@@ -696,13 +696,16 @@ describe('Application Schematic', () => {
     expect(config).toContain('provideRouter(routes)');
   });
 
-  it('should create a main.ts', async () => {
-    const options = { ...defaultOptions, standalone: true };
-    const tree = await schematicRunner.runSchematic('application', options, workspaceTree);
+  for (const standalone of [true, false]) {
+    it(`should create a main.ts with an unknown catch parameter and a block body (standalone=${standalone})`, async () => {
+      const options = { ...defaultOptions, standalone };
+      const tree = await schematicRunner.runSchematic('application', options, workspaceTree);
 
-    const main = tree.readContent('/projects/foo/src/main.ts');
-    expect(main).toContain('bootstrapApplication');
-  });
+      const main = tree.readContent('/projects/foo/src/main.ts');
+      expect(main).toContain(standalone ? 'bootstrapApplication' : 'bootstrapModule');
+      expect(main).toMatch(/\.catch\(\(err: unknown\) => \{\s+console\.error\(err\);\s+\}\);/);
+    });
+  }
 
   describe('standalone=false', () => {
     it('should add the provideZoneChangeDetection with event coalescing option by default with zone.js apps', async () => {