.eslintrc.js

/** @type {import("eslint").Linter.Config} */
module.exports = {
  env: {
    es6: true,
  },
  extends: ['typestrict'],
  plugins: ['no-only-tests', 'simple-import-sort', 'unused-imports', 'import'],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: './tsconfig.json',
    sourceType: 'module',
    extraFileExtensions: ['.mjs', '.cjs'],
  },
  rules: {
    // this gets inlined into a package eslint, so it means: use current package's package.info or the one at the project root
    'import/no-extraneous-dependencies': ['error', { packageDir: ['./', __dirname] }],
    'unused-imports/no-unused-imports-ts': 'error',
    'simple-import-sort/imports': 'error',
    'simple-import-sort/exports': 'error',
    '@typescript-eslint/no-use-before-define': 'off',
    '@typescript-eslint/no-useless-constructor': 'error',
    'accessor-pairs': 'error',
    'constructor-super': 'error',
    eqeqeq: [
      'error',
      'always',
      {
        null: 'ignore',
      },
    ],
    'handle-callback-err': ['error', '^(err|error)$'],
    'new-parens': 'error',
    'no-array-constructor': 'error',
    'no-async-promise-executor': 'error',
    'no-caller': 'error',
    'no-class-assign': 'error',
    'no-compare-neg-zero': 'error',
    'no-cond-assign': 'error',
    'no-const-assign': 'error',
    'no-constant-condition': [
      'error',
      {
        checkLoops: false,
      },
    ],
    'no-control-regex': 'error',
    'no-debugger': 'error',
    'no-delete-var': 'error',
    'no-dupe-args': 'error',
    'no-dupe-keys': 'error',
    'no-duplicate-case': 'error',
    'no-empty-character-class': 'error',
    'no-empty-pattern': 'error',
    'no-eval': 'error',
    'no-ex-assign': 'error',
    'no-extend-native': 'error',
    'no-extra-bind': 'error',
    'no-extra-boolean-cast': 'error',
    'no-extra-parens': ['error', 'functions'],
    'no-floating-decimal': 'error',
    'no-func-assign': 'error',
    'no-global-assign': 'error',
    'no-implied-eval': 'error',
    'no-inner-declarations': ['error', 'functions'],
    'no-invalid-regexp': 'error',
    'no-iterator': 'error',
    'no-label-var': 'error',
    'no-labels': [
      'error',
      {
        allowLoop: false,
        allowSwitch: false,
      },
    ],
    'no-lone-blocks': 'error',
    'no-misleading-character-class': 'error',
    'no-multi-str': 'error',
    'no-negated-in-lhs': 'error',
    'no-new': 'error',
    'no-new-func': 'error',
    'no-new-object': 'error',
    'no-new-require': 'error',
    'no-new-symbol': 'error',
    'no-new-wrappers': 'error',
    'no-obj-calls': 'error',
    'no-octal': 'error',
    'no-octal-escape': 'error',
    'no-path-concat': 'error',
    'no-proto': 'error',
    '@typescript-eslint/no-redeclare': [
      'error',
      {
        builtinGlobals: false,
        ignoreDeclarationMerge: true,
      },
    ],
    'no-regex-spaces': 'error',
    'no-return-assign': ['error', 'except-parens'],
    'no-self-assign': 'error',
    'no-self-compare': 'error',
    'no-sequences': 'error',
    'no-shadow-restricted-names': 'error',
    'no-sparse-arrays': 'error',
    'no-tabs': 'error',
    'no-this-before-super': 'error',
    'no-throw-literal': 'error',
    'no-unexpected-multiline': 'error',
    'no-unmodified-loop-condition': 'error',
    'no-unneeded-ternary': [
      'error',
      {
        defaultAssignment: false,
      },
    ],
    'no-unreachable': 'error',
    'no-unsafe-finally': 'error',
    'no-unsafe-negation': 'error',
    'no-restricted-imports': ['error'],
    'no-use-before-define': ['off'],
    'no-useless-call': 'error',
    'no-useless-catch': 'error',
    'no-useless-computed-key': 'error',
    'no-useless-escape': 'error',
    'no-useless-rename': 'error',
    'no-useless-return': 'error',
    'no-with': 'error',
    'one-var': [
      'error',
      {
        initialized: 'never',
      },
    ],
    'prefer-const': [
      'error',
      {
        destructuring: 'all',
      },
    ],
    'prefer-promise-reject-errors': 'error',
    'symbol-description': 'error',
    'use-isnan': 'error',
    'valid-typeof': [
      'error',
      {
        requireStringLiterals: true,
      },
    ],
    yoda: ['error', 'never'],
    'no-only-tests/no-only-tests': 'error',
  },
}