eslint.config.cjs

/*
 * Consolidated flat ESLint config for the monorepo (ESLint v9+)
 * - TypeScript strict rules
 * - Prettier compatibility
 * - Minimal custom rules
 */
const tsPlugin = require('@typescript-eslint/eslint-plugin');
const tsParser = require('@typescript-eslint/parser');

/** @type {import('eslint').Linter.FlatConfig[]} */
module.exports = [
  {
    ignores: [
      '**/node_modules/**',
      '**/dist/**',
      '**/coverage/**',
      '.turbo/**',
      'packages/**/dist/**',
      '**/*.d.ts'
    ],
  },
  {
    files: ['**/*.{ts,tsx,js,cjs,mjs}'],
    languageOptions: {
      parser: tsParser,
      parserOptions: {
        ecmaVersion: 2022,
        sourceType: 'module',
        projectService: true,
        tsconfigRootDir: __dirname,
        // NOTE: @typescript-eslint currently warns for TS 5.9; keep until plugin updates.
      },
    },
    plugins: { '@typescript-eslint': tsPlugin },
    rules: {
      '@typescript-eslint/ban-ts-comment': [
        'error',
        { 'ts-ignore': 'allow-with-description', minimumDescriptionLength: 10 },
      ],
      'no-unused-vars': 'off',
      '@typescript-eslint/no-unused-vars': [
        'warn',
        { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }
      ],
    },
  },
];