eslint-config-precure/index.js

ESLint shareable config for precure

/* eslint-disable unicorn/prevent-abbreviations */
// @flow

module.exports = {
  parser: 'babel-eslint',
  parserOptions: {
    ecmaVersion: 2019,
    sourceType: 'module',
    ecmaFeatures: {
      experimentalObjectRestSpread: true,
    },
  },
  env: {
    browser: true,
    node: true,
    es6: true,
  },
  extends: [
    './best-practices.js',
    './possible-errors.js',
    './stylistic.js',
    './import.js',
    './unicorn.js',
    'prettier',
  ],
  plugins: ['prettier'],
  rules: {
    'prettier/prettier': 2,

    // rules
    'no-var': 2,
    'object-shorthand': [2, 'always'],
    'prefer-arrow-callback': 0,
    'prefer-const': [2, { destructuring: 'all' }],
    'prefer-numeric-literals': 2,
    'prefer-rest-params': 2,
    'prefer-spread': 2,
    'no-compare-neg-zero': 2,
    'no-cond-assign': 2,
    'no-constant-condition': 2,
    'no-control-regex': 2,
    'no-debugger': 2,
    'no-dupe-args': 2,
    'no-dupe-keys': 2,
    'no-duplicate-case': 2,
    'no-empty-character-class': 2,
    'no-empty': [2, { allowEmptyCatch: true }],
    'no-ex-assign': 2,
    'no-extra-boolean-cast': 2,
    // 'no-extra-semi': 2,
    'no-func-assign': 2,
    'no-inner-declarations': 2,
    'no-invalid-regexp': 2,
    'no-irregular-whitespace': 2, // prettier?
    'no-obj-calls': 2,
    'no-prototype-builtins': 2,
    'no-regex-spaces': 2,
    'no-sparse-arrays': 2,
    'no-template-curly-in-string': 2,
    'no-unreachable': 2,
    'no-unsafe-finally': 2,
    'no-unsafe-negation': 2,
    'use-isnan': 2,
    'valid-typeof': [2, { requireStringLiterals: true }],
    'no-unexpected-multiline': 0,
    'accessor-pairs': 2,
    'array-callback-return': 2,
    'block-scoped-var': 2,
    complexity: 1,
    // http://eslint.org/docs/rules/class-methods-use-this
    'class-methods-use-this': [2, { exceptMethods: [] }],
    'consistent-return': 2,
    curly: 2,
    'default-case': 2,
    'dot-notation': 2,
    'dot-location': 0,
    eqeqeq: 2,
    'guard-for-in': 2,
    'no-alert': 2,
    'no-caller': 2,
    'no-case-declarations': 2,
    'no-else-return': 2,
    'no-empty-pattern': 2,
    'no-eq-null': 2,
    'no-eval': 2,
    'no-extend-native': 2,
    'no-extra-bind': 2,
    'no-extra-label': 2,
    'no-fallthrough': 2,
    'no-global-assign': 2,
    'no-implicit-coercion': 2,
    'no-implied-eval': 2,
    'no-iterator': 2,
    'no-labels': 2,
    'no-lone-blocks': 2,
    'no-loop-func': 2,
    'no-multi-str': 2,
    'no-new-func': 2,
    'no-new-wrappers': 2,
    'no-new': 2,
    'no-new-require': 2,
    'no-octal-escape': 2,
    'no-octal': 2,
    'no-proto': 2,
    'no-redeclare': 2,
    'no-return-assign': [2, 'always'],
    'no-return-await': 2,
    'no-script-url': 2,
    'no-self-assign': [2, { props: true }],
    'no-self-compare': 2,
    'no-sequences': 2,
    'no-throw-literal': 2,
    'no-unmodified-loop-condition': 2,
    'no-unused-expressions': 2,
    'no-unused-labels': 2,
    'no-useless-call': 2,
    'no-useless-concat': 2,
    'no-useless-escape': 2,
    'no-useless-return': 2,
    'no-void': 2,
    'no-warning-comments': 1,
    'no-with': 2,
    'prefer-promise-reject-errors': [2, { allowEmptyReject: true }],
    radix: 2,
    // 'wrap-iife': [2, 'inside', {functionPrototypeMethods: true}],
    yoda: 2,
    'no-delete-var': 2,
    'no-label-var': 2,
    'no-restricted-globals': [2, 'event'],
    'no-shadow-restricted-names': 2,
    'no-undef-init': 2,
    'no-undef': [2, { typeof: true }],
    'no-unused-vars': [
      2,
      { argsIgnorePattern: '^_+$', ignoreRestSiblings: true },
    ],
    'no-use-before-define': [2, 'nofunc'],
    'no-mixed-requires': [2, { grouping: true, allowCall: true }],
    'no-path-concat': 2,

    // don't use these
    'no-restricted-imports': [
      'error',
      'domain',
      'freelist',
      'smalloc',
      'sys',
      'colors',
    ],
    'no-restricted-modules': [
      'error',
      'domain',
      'freelist',
      'smalloc',
      'sys',
      'colors',
    ],

    camelcase: [2, { properties: 'always' }],

    'func-name-matching': 2,
    'func-names': [2, 'never'],
    'linebreak-style': 0,
    'max-depth': 1,
    'max-nested-callbacks': [1, 4],
    'max-params': [1, { max: 4 }],

    'new-cap': [2, { newIsCap: true, capIsNew: true }],

    'no-array-constructor': 2,
    'no-lonely-if': 2,
    // https://github.com/prettier/eslint-config-prettier#no-mixed-operators
    'no-mixed-operators': 0,
    'no-mixed-spaces-and-tabs': 0,
    'no-multi-assign': 2,

    'no-negated-condition': 2,
    'no-new-object': 2,
    'no-restricted-syntax': [2, 'WithStatement'],
    'no-unneeded-ternary': 2,
    'one-var': [2, 'never'],
    'one-var-declaration-per-line': 0,
    'operator-assignment': [2, 'always'],
    'spaced-comment': [
      2,
      'always',
      {
        line: { exceptions: ['-'] },
        block: { markers: ['!'], balanced: true },
      },
    ],
    'no-class-assign': 2,
    'no-useless-computed-key': 2,
    'no-useless-constructor': 2,
    'no-useless-rename': 2,
    'require-yield': 2,
    'symbol-description': 2,
    'template-curly-spacing': 0,
    'no-process-exit': 0, // use unicorn/no-process-exit
    'max-classes-per-file': [2, 1], // 1つのファイルに1つのクラス
    'max-lines-per-function': 2, // 1つの関数は50行以内
    'no-async-promise-executor': 2,
    'no-misleading-character-class': 2,
    'require-atomic-updates': 2,
    'require-unicode-regexp': 2,
    'no-useless-catch': 2,
  },
}