Reached heap limit Allocation failed - JavaScript heap out of memory

[sysmat]

Command

lint

Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

19

Description

1. If I run ng lint I get error
2. If I run eslint --ext .ts,.html src it works fine

Minimal Reproduction

• angular.json

"lint": {
          "builder": "@angular-eslint/builder:lint",
          "options": {
            "lintFilePatterns": ["src/**/*.ts", "src/**/*.html", "src/**/*.css"]
          }
        }

• package.json

 "@angular-eslint/builder": "20.0.0",
    "@angular-eslint/eslint-plugin": "20.0.0",
    "@angular-eslint/eslint-plugin-template": "20.0.0",
    "@angular-eslint/schematics": "20.0.0",
    "@angular-eslint/template-parser": "20.0.0",
   "@eslint/compat": "^1.3.0",
    "@eslint/css": "^0.8.1",
    "@eslint/eslintrc": "^3.3.1",
    "@eslint/js": "^9.28.0",
    "@typescript-eslint/eslint-plugin": "8.34.0",
    "@typescript-eslint/parser": "8.34.0",
"eslint": "^9.28.0",
    "eslint-config-prettier": "^10.1.5",
    "eslint-plugin-import": "2.31.0",
    "eslint-plugin-jsdoc": "51.0.1",
    "eslint-plugin-prefer-arrow": "1.2.3",
    "eslint-plugin-prettier": "^5.4.1",
"prettier-eslint": "^16.4.2",

• eslint.config.mjs

import angularEslint from '@angular-eslint/eslint-plugin';
import { fixupPluginRules } from '@eslint/compat';
import css from '@eslint/css';
import { FlatCompat } from '@eslint/eslintrc';
import js from '@eslint/js';
import typescriptEslint from '@typescript-eslint/eslint-plugin';
import _import from 'eslint-plugin-import';
import jsdoc from 'eslint-plugin-jsdoc';
import preferArrow from 'eslint-plugin-prefer-arrow';
import path from 'node:path';
import { fileURLToPath } from 'node:url';

const __filename = fileURLToPath(import.meta.url);
const __dirname = path.dirname(__filename);
const compat = new FlatCompat({
  baseDirectory: __dirname,
  recommendedConfig: js.configs.recommended,
  allConfig: js.configs.all,
});

export default [
  {
    ignores: ['src/assets/css/arnes-bootstrap.css'],
  },
  {
    plugins: {
      import: fixupPluginRules(_import),
      jsdoc,
      'prefer-arrow': preferArrow,
      '@typescript-eslint': typescriptEslint,
      '@angular-eslint': angularEslint,
    },
  },
  ...compat
    .extends('plugin:@angular-eslint/template/process-inline-templates', 'plugin:prettier/recommended')
    .map(config => ({
      ...config,
      files: ['**/*.ts'],
    })),
  {
    files: ['**/*.ts'],
    languageOptions: {
      parserOptions: {
        project: ['tsconfig.json'],
        createDefaultProgram: true,
      },
    },
    rules: {
      '@typescript-eslint/consistent-type-definitions': 'error',
      '@typescript-eslint/no-deprecated': 'warn',
      '@typescript-eslint/dot-notation': 'off',
      '@typescript-eslint/explicit-member-accessibility': [
        'off',
        {
          accessibility: 'explicit',
        },
      ],
      'id-blacklist': 'off',
      'id-match': 'off',
      'no-underscore-dangle': 'off',
      '@typescript-eslint/naming-convention': 'off',
      '@typescript-eslint/member-ordering': 'off',
      'no-shadow': 'off',
      'prefer-arrow/prefer-arrow-functions': 'off',
      'arrow-body-style': 'off',
      'brace-style': ['off', '1tbs'],
      '@typescript-eslint/consistent-type-assertions': 'off',
      'jsdoc/newline-after-description': 'off',
      'jsdoc/tag-lines': [
        'warn',
        'never',
        {
          startLines: 1,
        },
      ],
    },
  },
  ...compat
    .extends('plugin:@angular-eslint/template/recommended', 'plugin:@angular-eslint/template/accessibility')
    .map(config => ({
      ...config,
      files: ['**/*.html'],
    })),
  {
    files: ['**/*.html'],
    rules: {
      '@angular-eslint/template/no-autofocus': 'off',
    },
  },
  {
    files: ['**/*.css'],
    language: 'css/css',
    ...css.configs.recommended,
    rules: {
      'css/use-baseline': 'warn',
    },
  },
];

Exception or Error

> ng lint


Linting "frontend"...

<--- Last few GCs --->

[54756:000002C3FDB45000]    61270 ms: Mark-Compact 4041.8 (4129.9) -> 4037.1 (4141.1) MB, pooled: 0 MB, 4031.72 / 0.03 ms  (average mu = 0.440, current mu = 0.061) allocation failure; scavenge might not succeed
[54756:000002C3FDB45000]    63813 ms: Mark-Compact 4054.2 (4142.4) -> 4048.3 (4153.6) MB, pooled: 0 MB, 2455.67 / 0.01 ms  (average mu = 0.312, current mu = 0.034) allocation failure; scavenge might not succeed


<--- JS stacktrace --->

FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
----- Native stack trace -----

 1: 00007FF673DE711D node::SetCppgcReference+17725
 2: 00007FF673D4A138 SSL_get_quiet_shutdown+92344
 3: 00007FF6748D0C51 v8::Isolate::ReportExternalAllocationLimitReached+65
 4: 00007FF6748BD8D6 v8::Function::Experimental_IsNopFunction+2870
 5: 00007FF67470AA20 v8::internal::StrongRootAllocatorBase::StrongRootAllocatorBase+31456
 6: 00007FF674707A8A v8::internal::StrongRootAllocatorBase::StrongRootAllocatorBase+19274
 7: 00007FF67471D2E1 v8::Isolate::GetHeapProfiler+7793
 8: 00007FF67471DB88 v8::Isolate::GetHeapProfiler+10008
 9: 00007FF67472E83B v8::Isolate::GetHeapProfiler+78795
10: 00007FF6743F772B v8::base::AddressSpaceReservation::AddressSpaceReservation+322075
11: 00007FF67498BFEE v8::PropertyDescriptor::writable+725966
12: 00007FF5F561E0B6

Your Environment

Angular CLI: 20.0.2
Node: 22.16.0
Package Manager: npm 10.9.2
OS: win32 x64

Angular: 20.0.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, localize, platform-browser
... platform-browser-dynamic, router, service-worker

Package                      Version
------------------------------------------------------
@angular-devkit/architect    0.2000.2
@angular-devkit/core         20.0.2
@angular-devkit/schematics   20.0.2
@angular/build               20.0.2
@angular/cli                 20.0.2
@schematics/angular          20.0.2
rxjs                         7.8.2
typescript                   5.8.3
zone.js                      0.15.1

Anything else relevant?

No response

[alan-agius4]

@angular-eslint/builder is a 3rd party package which is not supported by the Angular team.