.eslintrc.js

module.exports = {
  extends: ['plugin:@angular-eslint/recommended'],
  rules: {
    '@angular-eslint/directive-selector': [
      'error',
      { type: 'attribute', prefix: 'app', style: 'camelCase' },
    ],
    '@angular-eslint/component-selector': [
      'error',
      { type: 'element', prefix: 'app', style: 'kebab-case' },
    ],
  },
  overrides: [
    {
      files: ['*.js'],
      parser: 'espree',
      extends: ['eslint:recommended'],
      env: {
        node: true,
        es6: true,
      },
    },
    {
      files: ['*.ts'],
      parser: '@typescript-eslint/parser',
      parserOptions: {
        project: ['tsconfig.eslint.json'],
        ecmaVersion: 2020,
        sourceType: 'module',
      },
    },
    {
      files: ['*.component.ts'],
      parser: '@typescript-eslint/parser',
      parserOptions: {
        ecmaVersion: 2020,
        sourceType: 'module',
      },
      plugins: ['@angular-eslint/template'],
      processor: '@angular-eslint/template/extract-inline-html',
    },
  ],
};