.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true
  },
  extends: "eslint:recommended",
  parserOptions: {
    ecmaVersion: 2016,
    sourceType: "module"
  },
  rules: {
    "react/jsx-uses-react": 2,
    "react/jsx-uses-vars": 2,
    "no-unused-vars": [1, { varsIgnorePattern: "^h$" }],
    "no-cond-assign": 1,
    "no-empty": 0,
    "no-console": 1,
    semi: 2,
    camelcase: 0,
    "comma-style": 2,
    "comma-dangle": [2, "never"],
    indent: [2, "tab", { SwitchCase: 1 }],
    "no-mixed-spaces-and-tabs": [2, "smart-tabs"],
    "no-trailing-spaces": [2, { skipBlankLines: true }],
    "max-nested-callbacks": [2, 3],
    "no-eval": 2,
    "no-implied-eval": 2,
    "no-new-func": 2,
    "guard-for-in": 0,
    eqeqeq: 0,
    "no-else-return": 2,
    "no-redeclare": 2,
    "no-dupe-keys": 2,
    radix: 2,
    strict: [2, "never"],
    "no-shadow": 0,
    "callback-return": [1, ["callback", "cb", "next", "done"]],
    "no-delete-var": 2,
    "no-undef-init": 2,
    "no-shadow-restricted-names": 2,
    "handle-callback-err": 0,
    "no-lonely-if": 2,
    "keyword-spacing": 2,
    "constructor-super": 2,
    "no-this-before-super": 2,
    "no-dupe-class-members": 2,
    "no-const-assign": 2,
    "prefer-spread": 2,
    "no-useless-concat": 2,
    "no-var": 2,
    "object-shorthand": 2,
    "prefer-arrow-callback": 2
  }
};