Not having es7/es8 env options = 'Promise' is not defined

Can we add an es7 and es8 env options please? Otherwise the below happens. Settings the env to es6 when I’m using es8 feels wrong.

Tell us about your environment

• ESLint Version: 3.19.0
• Node Version: 6.9.1
• npm Version: 3.10.8

What parser (default, Babel-ESLint, etc.) are you using? babel-eslint

Please show your full configuration:

module.exports = {
  extends: [
    'eslint:recommended',
    'plugin:import/recommended',
  ],

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

  plugins: [
    'import',
  ],
  
  // It's not a parser issue - I get the same problem if I remove this line
  parser: 'babel-eslint',

  parserOptions: {
    ecmaFeatures: {
      experimentalObjectRestSpread: true,
    },
    ecmaVersion: 2017,
    sourceType: 'module',
  },

  rules: {
    'array-bracket-spacing': [1, 'never'],
    'block-scoped-var': 0,
    'brace-style': [2, '1tbs', { allowSingleLine: false }],
    'camelcase': [2, { properties: 'never' }],
    'comma-dangle': [2, 'always-multiline'],
    'comma-spacing': [2, { before: false, after: true }],
    'comma-style': [2, 'last'],
    'complexity': [1, 10],
    'computed-property-spacing': [2, 'never'],
    'consistent-return': 0,
    'curly': 2,
    'dot-notation': 2,
    'eol-last': [2, 'unix'],
    'eqeqeq': 2,
    'func-call-spacing': 2,
    'guard-for-in': 2,
    'indent': [2, 2, { SwitchCase: 1 }],
    'jsx-quotes': [2, 'prefer-single'],
    'import/default': 0,
    'import/extensions': 2,
    'import/first': 2,
    'import/newline-after-import': 2,
    'import/no-absolute-path': 2,
    'import/no-deprecated': 1,
    'import/no-duplicates': 2,
    'import/no-dynamic-require': 2,
    'import/no-extraneous-dependencies': 2,
    'import/no-internal-modules': 2,
    'import/no-mutable-exports': 2,
    'import/no-named-as-default-member': 2,
    'import/no-named-as-default': 2,
    'import/no-named-default': 2,
    'import/no-namespace': 2,
    'import/no-unassigned-import': 2,
    'import/no-webpack-loader-syntax': 2,
    'import/order': [2, {
      groups: [
        'builtin',
        'external',
        'internal',
        ['index', 'sibling', 'parent'],
      ],
    }],
    'import/prefer-default-export': 2,
    'import/unambiguous': 0,
    'object-curly-spacing': [1, 'always'],
    'key-spacing': 0,
    'keyword-spacing': 2,
    'max-len': [2, { code: 100, ignoreComments: true, ignoreUrls: true }],
    'max-nested-callbacks': [2, 3],
    'max-params': [1, 4],
    'new-cap': [2, { newIsCap: true, capIsNew: false }],
    'new-parens': 2,
    'no-alert': 2,
    'no-array-constructor': 2,
    'no-bitwise': 2,
    'no-caller': 2,
    'no-catch-shadow': 0,
    'no-compare-neg-zero': 2,
    'no-duplicate-imports': 2,
    'no-eq-null': 2,
    'no-eval': 2,
    'no-extend-native': 2,
    'no-extra-bind': 2,
    'no-floating-decimal': 2,
    'no-func-assign': 2,
    'no-implied-eval': 2,
    'no-iterator': 2,
    'no-label-var': 2,
    'no-labels': 2,
    'no-lone-blocks': 2,
    'no-lonely-if': 2,
    'no-loop-func': 0,
    'no-multi-spaces': 0,
    'no-multi-str': 2,
    'no-multiple-empty-lines': 2,
    'no-nested-ternary': 2,
    'no-new': 2,
    'no-new-func': 2,
    'no-new-object': 2,
    'no-new-wrappers': 2,
    'no-octal-escape': 2,
    'no-process-exit': 2,
    'no-proto': 2,
    'no-restricted-globals': [2, 'event'],
    'no-return-assign': 0,
    'no-script-url': 2,
    'no-self-compare': 2,
    'no-sequences': 2,
    'no-shadow': 2,
    'no-shadow-restricted-names': 2,
    'no-throw-literal': 2,
    'no-trailing-spaces': 2,
    'no-undef-init': 2,
    'no-underscore-dangle': 0,
    'no-unsafe-negation': 2,
    'no-unused-expressions': 2,
    'no-use-before-define': 2,
    'no-var': 2,
    'no-void': 2,
    'no-with': 2,
    'object-shorthand': [2, 'always'],
    'operator-assignment': [2, 'always'],
    'operator-linebreak': [2, 'after'],
    'padded-blocks': [2, 'never'],
    'prefer-const': 2,
    'quotes': [2, 'single', 'avoid-escape'],
    'radix': 2,
    'semi': [2, 'always'],
    'semi-spacing': [2, { before: false, after: true }],
    'space-before-blocks': [2, 'always'],
    'space-before-function-paren': [2, 'never'],
    'space-in-parens': [2, 'never'],
    'space-infix-ops': 2,
    'space-unary-ops': 2,
    'spaced-comment': [2, 'always'],
    'strict': [2, 'never'],
    'valid-jsdoc': [2, {
      prefer: { returns: 'return' },
      requireParamDescription: false,
      requireReturn: false,
    }],
    'wrap-iife': [2, 'outside'],
    'yoda': 2,
  },
};

What did you do? Please include the actual source code causing the issue.

return new Promise((resolve) => {
  this.server = app.listen(port, () => {
    resolve();
  });
});

What did you expect to happen? Expected the linter not to treat Promise as undefined since it is a Node builtin AND was included in ES6.

What actually happened? Please include the actual, raw output from ESLint. error 'Promise' is not defined no-undef

Setting

env: {
  es6: true,
},

fixes the problem, but that feels wrong; I’m using ES2017 (es8), not ES2015 (es6)…

[ljharb]

* ES2017 (nobody calls it ES8).

I would definitely expect there to be an env version for every edition, even if no new globals were added - it should just inherit from the previous edition.

[MatthewHerbst]

I feel like the ecmaVersion and the env are pretty closely tied (as shown in the fact that setting es6: true also auto-sets ecmaVersion: 6). Imho, if I set the ecmaVersion, I expect the env to at a minimum support that version.