.eslintrc.cjs

module.exports = {
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/recommended'
    // 'plugin:@typescript-eslint/recommended-requiring-type-checking'
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: [
      './tsconfig.json',
      './src/tsconfig.app.json',
      './src/tsconfig.spec.json',
      './api/tsconfig.json'
    ],
    tsconfigRootDir: __dirname,
    // Performance optimizations
    createDefaultProgram: true
  },
  plugins: ['@typescript-eslint'],
  root: true,
  // Ignore plain JS config / asset files from type-aware linting to avoid parserOptions.project errors
  ignorePatterns: [
    'karma.conf.js',
    'src/karma.conf.js',
    'stryker.node.conf.js',
    'api/stryker.node.conf.js',
    // Ignore webpack config (plain JS) from type-aware linting
    'api/webpack-node.config.js',
    'src/assets/**/*',
    'src/app/assets/**/*'
  ],
  rules: {
    '@typescript-eslint/ban-ts-comment': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-extra-semi': 'off',
    '@typescript-eslint/no-inferrable-types': 'off',
    '@typescript-eslint/no-var-requires': 'off',
    'array-bracket-spacing': 'error',
    'arrow-parens': ['error', 'always'],
    'arrow-spacing': 'error',
    'block-spacing': 'error',
    'brace-style': ['error', '1tbs'],
    'comma-dangle': ['error', 'never'],
    'comma-spacing': 'error',
    'comma-style': 'error',
    'computed-property-spacing': 'error',
    'curly': ['error', 'all'],
    'dot-notation': 'error',
    'eol-last': 'error',
    'eqeqeq': 'error',
    'func-call-spacing': ['error', 'never'],
    // 'func-style': ['error', 'expression'],
    'getter-return': 'error',
    'grouped-accessor-pairs': ['error', 'getBeforeSet'],
    'key-spacing': 'error',
    'keyword-spacing': 'error',
    'indent': ['error', 2, {
      'SwitchCase': 1
    }],
    'linebreak-style': 'error',
    'lines-between-class-members': ['error', 'always', {
      'exceptAfterSingleLine': true
    }],
    'new-parens': ['error', 'always'],
    'no-case-declarations': 'off',
    'no-else-return': 'error',
    'no-empty': 'error',
    // 'no-empty-function': ['error', {
    //   'allow': ['constructors']
    // }],
    'no-extra-boolean-cast': 'off',
    'no-extra-semi': 'error',
    'no-mixed-spaces-and-tabs': 'error',
    'no-multi-spaces': 'error',
    'no-multiple-empty-lines': ['error', {
      'max': 1,
      'maxEOF': 1
    }],
    'no-prototype-builtins': 'off',
    'no-tabs': 'error',
    'no-trailing-spaces': 'error',
    'no-whitespace-before-property': 'error',
    'no-unreachable': 'error',
    'no-unused-expressions': ['error', {
      'allowTernary': true
    }],
    'no-var': 'error',
    // 'object-curly-newline': ['error', { 'multiline': true }],
    'object-curly-spacing': ['error', 'always'],
    // 'object-property-newline': 'error',
    'padded-blocks': ['error', 'never'],
    'prefer-const': 'error',
    'quotes': ['error', 'single'],
    'semi': ['error', 'always', {
      'omitLastInOneLineBlock': false
    }],
    'semi-spacing': 'error',
    'semi-style': ['error', 'last'],
    'space-in-parens': ['error', 'never'],
    'switch-colon-spacing': 'error'
  },
  'overrides': [
    {
      files: ['**/*.spec.ts', '**/*.spec.js'],
      rules: { 
        // Chai / Sinon assertion style uses expression chains (e.g. expect(x).to.be.true)
        // Disable both the base and TS variant of unused-expressions in test specs
        'no-unused-expressions': 'off',
        '@typescript-eslint/no-unused-expressions': 'off',
        '@typescript-eslint/no-unused-vars': 'off'
      }
    },
    {
      // Pact spec files legitimately use require() (Pact examples / dynamic loading)
      files: ['api/test/pact/pact-tests/**/*.spec.ts'],
      rules: {
        '@typescript-eslint/no-require-imports': 'off'
      }
    }
  ]
};