@forbeslindesay/tsconfig/eslint.js

Forbes Lindesay's tsconfig, tslint, prettier etc. configs

// This base config does not include any rules that require TypeScript info to function
module.exports = (options) => {
  if (typeof options?.internalRegex !== 'string') {
    throw new Error(`Expected options.internalRegex to be a string`);
  }
  return {
    extends: [],
    parser: '@typescript-eslint/parser',
    plugins: ['@typescript-eslint', 'import'],

    env: {
      node: true,
      es6: true,
      browser: true,
    },

    settings: {
      'import/extensions': ['.js', '.jsx', '.ts', '.tsx'],
      'import/internal-regex': options.internalRegex, // 'rollingversions',
      react: {version: 'detect'},
    },

    rules: {
      // sort imports so I don't have to think about them
      'import/order': [
        'error',
        {
          alphabetize: {order: 'asc', caseInsensitive: true},
          'newlines-between': 'always',
          groups: [
            'builtin',
            'external',
            'internal',
            ['parent', 'sibling', 'index'],
          ],
        },
      ],

      // prevent ../current-folder
      'import/no-useless-path-segments': ['error'],

      // Require explicit values in enums. This prevents the value changing when keys are added/removed/reordered in enums
      '@typescript-eslint/prefer-enum-initializers': ['error'],

      // For of loops are easier to read when you do not need the index
      '@typescript-eslint/prefer-for-of': ['error'],

      // ts-expect-error works just like ts-ignore except that you are forced to remove it once it is no longer needed
      '@typescript-eslint/prefer-ts-expect-error': ['error'],
    },
  };
};