.eslintrc.json

{
  "env": {
    "es6": true
  },
  "parserOptions": {
    "sourceType": "module",
    "ecmaVersion": 2016,
    "ecmaFeatures": {
      "jsx": true
    }
  },
  "rules": {
    "no-mixed-spaces-and-tabs": 2,
    "indent": [2, 2],
    "max-len": ["warn", { "code": 80 }],
    "camelcase": 2,
    "curly": 2,
    "eqeqeq": [2, "smart"],
    "semi": 2,
    "no-extra-semi": 2,
    "brace-style": [2, "1tbs", { "allowSingleLine": true }],
    "semi-spacing": 1,
    "key-spacing": 1,
    "block-spacing": 1,
    "comma-spacing": 1,
    "no-multi-spaces": 1,
    "space-before-blocks": 1,
    "keyword-spacing": [1, { "before": true, "after": true }],
    "space-infix-ops": 1,
    "one-var": [1, { "uninitialized": "never", "initialized": "never" }],
    "no-use-before-define": 2,
    "comma-style": [2, "last"],
    "quotes": [1, "single", { "avoidEscape": true }]
  }
}