.eslintrc.js

// .eslintrc.js
module.exports = {
  overrides: [
    {
      files: ['**/*.{js,ts}'],
      plugins: ['ember'],
      parser: '@typescript-eslint/parser',
      extends: [
        'eslint:recommended',
        'plugin:ember/recommended', // or other configuration
        'plugin:prettier/recommended',
      ],
      rules: {
        // override / enable optional rules
        'ember/no-replace-test-comments': 'error',
      },
    },
    {
      files: ['**/*.gts'],
      parser: 'ember-eslint-parser',
      plugins: ['ember'],
      extends: [
        'eslint:recommended',
        'plugin:@typescript-eslint/recommended',
        'plugin:ember/recommended',
        'plugin:ember/recommended-gts',
        'plugin:prettier/recommended',
      ],
      rules: {
        // To use the @RouteTemplate decorator on Glimmer components in `/templates`
        'ember/no-empty-glimmer-component-classes': 'off',
      },
    },
    {
      files: ['**/*.gjs'],
      parser: 'ember-eslint-parser',
      plugins: ['ember'],
      extends: [
        'eslint:recommended',
        'plugin:ember/recommended',
        'plugin:ember/recommended-gjs',
        'plugin:prettier/recommended',
      ],
    },
    {
      files: ['tests/**/*.{js,ts,gjs,gts}'],
      rules: {
        // override / enable optional rules
        'ember/no-replace-test-comments': 'error',
      },
    },
    // node files
    {
      parser: '@typescript-eslint/parser',
      files: [
        './.eslintrc.js',
        './.prettierrc.js',
        './.stylelintrc.js',
        './.template-lintrc.js',
        './postcss.config.js',
        './ember-cli-build.js',
        './testem.js',
        './blueprints/*/index.js',
        './config/**/*.js',
        './lib/*/index.js',
        './server/**/*.js',
      ],
      env: {
        browser: false,
        node: true,
      },
      extends: ['plugin:n/recommended'],
    },
  ],
};