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This repository was archived by the owner on Nov 21, 2025. It is now read-only.
This repository was archived by the owner on Nov 21, 2025. It is now read-only.

Referencing "ts" file as a templateUrl in component file crashes the service #2166

@kprzybylski88

Description

@kprzybylski88

🐞 bug report

Is this a regression?

I don't know. Most likely no.

Description

If you erroneously reference a .ts file in @Component({templateUrl}) the angular language service crashes and permanently stops working giving the "The Angular Language Service server crashed 5 times in the last 3 minutes. The server will not be restarted." message.

Bug Type

What does this bug affect

  • Angular Language Service VSCode extension
  • Angular Language Service server

Reproduction

Steps to reproduce the behavior:

  1. Create a new angular project using "ng new"
  2. Open vscode and install angular language service
  3. Open app.component.ts and change the value "templateUrl" in @Component decorator to "'app.component.ts"
  4. Angular language service should crash

app.component.ts code that causes the service to crash below:


import { Component } from '@angular/core';
import { RouterOutlet } from '@angular/router';

@Component({
  selector: 'app-root',
  standalone: true,
  imports: [RouterOutlet],
  templateUrl: 'app.component.ts',
  styleUrl: './app.component.css'
})
export class AppComponent {
  title = 'repro';
}

Expected behavior

This should fail gracefully, by either underlining the problem to the user or ignoring wrong references to the 'ts' file

Logs

Log file gives us deep insight into the behavior and performance of the extension. If the issue is a performance
problem or an error occured, please provide the output of the log file below.

Set Angular Log level to verbose.





Err 29    [8:36:53.508] Error: readResource() should not be called on TS file: **HOME DIRECTORY**repro/repro/src/app/app.component.ts
    at LanguageServiceAdapter.readResource (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:72342:23)
    at AdapterResourceLoader.load (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:65071:32)
    at extractTemplate (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:49486:52)
    at ComponentDecoratorHandler.analyze (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:59811:28)
    at TraitCompiler.analyzeTrait (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:42095:40)
    at analyze (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:42061:44)
    at TraitCompiler.analyzeClass (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:42083:21)
    at visit (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/@angular/language-service/bundles/language-service.js:41860:26)
    at visitNodes (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/typescript/lib/typescript.js:32316:22)
    at forEachChildInSourceFile (**HOME DIRECTORY**.vscode/extensions/angular.ng-template-19.2.2/node_modules/typescript/lib/typescript.js:32529:12)

Screenshots

If applicable, add screenshots to help explain your problem.

n/a

🌍 Your Environment

Angular Version:





     _                      _                 ____ _     ___
    / \   _ __   __ _ _   _| | __ _ _ __     / ___| |   |_ _|
   / △ \ | '_ \ / _` | | | | |/ _` | '__|   | |   | |    | |
  / ___ \| | | | (_| | |_| | | (_| | |      | |___| |___ | |
 /_/   \_\_| |_|\__, |\__,_|_|\__,_|_|       \____|_____|___|
                |___/
    

Angular CLI: 18.2.16
Node: 20.17.0
Package Manager: npm 10.8.2
OS: linux x64

Angular: 18.2.13
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package                         Version
---------------------------------------------------------
@angular-devkit/architect       0.1802.16
@angular-devkit/build-angular   18.2.16
@angular-devkit/core            18.2.16
@angular-devkit/schematics      18.2.16
@angular/cli                    18.2.16
@schematics/angular             18.2.16
rxjs                            7.8.2
typescript                      5.5.4
zone.js                         0.14.10
    

Extension Version:




v. 19.2.2

VSCode Version:




1.98.2

Operating System:




OS: Linux Mint 22 Cinnamon
Cinnamon Version: 6.2.9
Linux Kernel: 6.8.0-55-generic

Extension options:





{
    "angular.log": "terse"
}

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