eslint.config.cjs

/* eslint-disable @typescript-eslint/no-require-imports */
const { FlatCompat } = require('@eslint/eslintrc');

// Bridge old-style ESLint config into the flat config format required by ESLint v9+
const compat = new FlatCompat({
  baseDirectory: __dirname,
  resolvePluginsRelativeTo: __dirname,
});

module.exports = compat.config({
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.linting.json',
    tsconfigRootDir: __dirname,
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint', 'simple-import-sort', 'require-extensions'],
  extends: [
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
    'plugin:require-extensions/recommended',
  ],
  root: true,
  env: {
    node: true,
    jest: true,
  },
  ignorePatterns: ['.eslintrc.js', 'webpack.config.js', 'examples/apidoc'],
  rules: {
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-non-null-assertion': 'off',
    '@typescript-eslint/ban-types': 'off',
    'no-param-reassign': ['error'],
    'simple-import-sort/imports': 'error',
    'simple-import-sort/exports': 'error',
    'array-bracket-spacing': ['error', 'never'],
    'linebreak-style': ['error', 'unix'],
    'lines-between-class-members': ['warn', 'always'],
    '@typescript-eslint/no-empty-object-type': [
      'error',
      { allowObjectTypes: 'always' },
    ],
    '@typescript-eslint/no-unused-vars': 'off',
    semi: ['error', 'always'],
    'new-cap': 'off',
    'no-console': 'off',
    'no-debugger': 'off',
    'no-mixed-spaces-and-tabs': 2,
    'no-use-before-define': [2, 'nofunc'],
    'no-unreachable': ['warn'],
    'no-unused-vars': ['warn'],
    'no-extra-parens': ['off'],
    'no-mixed-operators': ['off'],
    quotes: [2, 'single', 'avoid-escape'],
    'block-scoped-var': 2,
    'brace-style': [2, '1tbs', { allowSingleLine: true }],
    'computed-property-spacing': [2, 'never'],
    'keyword-spacing': 2,
    'space-unary-ops': 2,
  },
});