.eslintrc.js

module.exports = {
  "parser": "babel-eslint",
  "parserOptions": {
    "sourceType": "module",
    "allowImportExportEverywhere": false,
    "codeFrame": true,
    "ecmaFeatures": {
      "jsx": true
    },
  },
  "plugins": ["react"],
  "rules": {
    "react/jsx-sort-props": "error",
    "react/jsx-uses-react": "error",
    "react/jsx-uses-vars": "error",
    "consistent-return": "error",
    "no-debugger": "error",
    "no-invalid-regexp": "error",
    "no-mixed-spaces-and-tabs": "error",
    "no-trailing-spaces": "error",
    "no-undef": "error",
    "no-unused-expression": [true, "allow-fast-null-checks"],
    "no-unused-vars": ["error", { "vars": "all", "args": "none", "ignoreRestSiblings": false }],
    "no-var": "error",
    "prefer-const": "error",
    "quotes": [2, "single", { "avoidEscape": true }],
    "semi": [2, "always"],
    "strict": 0
  },
  "globals": {
    "__dirname": false,
    "$ReadOnlyArray": false,
    "Blob": false,
    "Class": false,
    "Component": false,
    "Document": true,
    "Element": false,
    "Event": false,
    "HTMLElement": false,
    "Image": false,
    "Map": false,
    "MouseEvent": false,
    "MutationObserver": false,
    "Promise": false,
    "Set": false,
    "SyntheticEvent": false,
    "SyntheticInputEvent": false,
    "SyntheticMouseEvent": false,
    "cancelAnimationFrame": false,
    "clearTimeout": false,
    "console": false,
    "document": false,
    "module": false,
    "process": false,
    "require": false,
    "requestAnimationFrame": false,
    "setTimeout": false,
    "window": false
  }
}