.eslintrc.js

/**
 * eslint config
 * https://github.com/Sairyss/backend-best-practices#static-code-analysis
 */

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    tsconfigRootDir: __dirname,
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint/eslint-plugin'],
  extends: [
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
  ],
  root: true,
  env: {
    node: true,
    jest: true,
  },
  ignorePatterns: ['.eslintrc.js'],
  rules: {
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/no-explicit-any': 'off',

    // TS errors
    '@typescript-eslint/no-misused-new': 'error',
    '@typescript-eslint/explicit-module-boundary-types': 'error',
    '@typescript-eslint/no-non-null-assertion': 'error',
    '@typescript-eslint/no-unused-vars': 'error',

    // Eslint off
    'import/extensions': 'off',
    'import/prefer-default-export': 'off',
    'class-methods-use-this': 'off',
    'no-useless-constructor': 'off',
    'import/no-unresolved': 'off',
    'no-control-regex': 'off',
    'no-shadow': 'off',
    'import/no-cycle': 'off',
    'consistent-return': 'off',
    'no-underscore-dangle': 'off',
    'max-classes-per-file': 'off',

    // Eslint errors
    'no-restricted-syntax': [
      'error',
      {
        selector: 'LabeledStatement',
        message:
          'Labels are a form of GOTO; using them makes code confusing and hard to maintain and understand.',
      },
      {
        selector: 'WithStatement',
        message:
          '`with` is disallowed in strict mode because it makes code impossible to predict and optimize.',
      },
      {
        selector: "MethodDefinition[kind='set']",
        message: 'Property setters are not allowed',
      },
    ],
  },
};