A config file for ESLint.

.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true,
  },
  parser: 'babel-eslint',
  extends: ['airbnb', 'prettier', 'prettier/react'],
  globals: {
    Atomics: 'readonly',
    SharedArrayBuffer: 'readonly',
  },
  parserOptions: {
    ecmaFeatures: {
      jsx: true,
      modules: true,
    },
    ecmaVersion: 2018,
    sourceType: 'module',
  },
  plugins: ['react', 'prettier'],
  rules: {
    'prettier/prettier': 'error',
    'react/jsx-filename-extension': [1, { extensions: ['.js', '.jsx'] }],
    'react/forbid-prop-types': [0, { forbid: ['any'] }],
    'react/prop-types': 0,
  },
  env: {
    jest: true,
    browser: true,
    node: true,
  },
};

I was reading https://medium.com/@haykerman/setting-up-eslint-prettier-for-react-app-in-vscode-8662de2d9a96 when I think I noticed an error.
There are two env objects, and the one at the end will overwrite the one at the beginning. The overwrite will retain browser because both env objects have browser: true, but es6: true will get wiped away by the overwrite.
Can you please verify if there is an error here, of if the two separate env properties are indeed meant to be separate?