eslint.config.js

import js from '@eslint/js';
import globals from 'globals';
import reactHooks from 'eslint-plugin-react-hooks';
import tseslint from 'typescript-eslint';

export default tseslint.config(
  { ignores: ['dist', 'node_modules', 'coverage'] },
  {
    files: ['**/*.{ts,tsx}'],
    extends: [js.configs.recommended, ...tseslint.configs.recommended],
    languageOptions: {
      ecmaVersion: 2022,
      globals: globals.browser,
    },
    plugins: {
      'react-hooks': reactHooks,
    },
    rules: {
      ...reactHooks.configs.recommended.rules,

      /* `any` is how this codebase lost track of its own data shapes — the CSV
         exporter read six field names that did not exist and tsc could not see
         it, because everything passed through `HistoryItem.data: any`. */
      '@typescript-eslint/no-explicit-any': 'warn',

      '@typescript-eslint/no-unused-vars': [
        'error',
        { argsIgnorePattern: '^_', varsIgnorePattern: '^_' },
      ],
    },
  },
  {
    files: ['vite.config.ts', 'vitest.config.ts'],
    languageOptions: { globals: globals.node },
  },
);