Eslint rules to work next to prettier. I use prettier's default to format everything and eslint to highlight code issues.

.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es6: true,
    node: true,
    commonjs: true,
  },
  extends: ["eslint:recommended", "plugin:react/recommended"],
  globals: {
    Atomics: "readonly",
    SharedArrayBuffer: "readonly",
    define: true,
    expect: true,
    path: true,
    beforeAll: true,
    afterAll: true,
  },
  parserOptions: {
    ecmaFeatures: {
      impliedStrict: true,
      jsx: true,
      experimentalObjectRestSpread: true,
    },
    ecmaVersion: 2018,
    sourceType: "module",
  },
  parser: "babel-eslint",

  plugins: ["react"],

  rules: {
    // prettier is handling all the syntax formatting
    quotes: 0,
    semi: 0,
    "comma-dangle": 0,
    "object-curly-spacing": 0,
    "array-bracket-spacing": 0,
    "space-before-function-paren": 0,
    "arrow-spacing": 0,
    "arrow-parens": 0,
    "arrow-body-style": 0,
    "no-multiple-empty-lines": 0,
    "func-style": 0,
    "no-empty-pattern": 0,
    indent: 0,
    "linebreak-style": 0,
    "jsx-quotes": 0,
    "react/jsx-max-props-per-line": 0,
    "react/jsx-props-no-multi-spaces": 0,
    "react/jsx-indent": 0,
    "react/jsx-indent-props": 0,
    "react/jsx-first-prop-new-line": 0,
    "react/jsx-equals-spacing": 0,
    "react/jsx-curly-newline": 0,
    "react/jsx-closing-bracket-location": 0,
    "react/jsx-curly-spacing": 0,
    "react/jsx-child-element-spacing": 0,
    "react/jsx-closing-tag-location": 0,
    "react/jsx-tag-spacing": 0,
    "react/react-in-jsx-scope": 0,
    "react/display-name": 0,
    "react/prop-types": 0,
    "no-console": 0,

    "no-empty": "warn",
    strict: ["error", "global"],
    "no-unused-vars": "warn",
    "consistent-return": "warn",
    "no-shadow": "error",
    "no-confusing-arrow": "warn",
    "no-constant-condition": "error",
    "no-undef": "error",
    "require-yield": "warn",
    "no-async-promise-executor": "warn",
    "react/jsx-no-duplicate-props": "warn",
    "react/jsx-key": "warn",

    "no-case-declarations": "error",
  },
};