.eslintrc

{
  "env": {
    "node": true
  },
  "rules": {
    // "comma-spacing": 1, // default [2, {"before": false, "after": true}]
    // "camelcase": 1,
    // "curly": 2, // default is [2, "all"]
    "key-spacing": 0,
    // 2 spaces indentation
    "indent": [2, 2, {"indentSwitchCase": true}],
    "max-len": [1, 80],
    "new-cap": 1,
    "no-underscore-dangle": 0,
    "no-unused-expressions": 0,
    "no-unused-vars": [1, { "vars": "all", "args": "none" }],
    "no-var": 0,
    "no-undef": 1,
    "no-caller": 1,
    "quotes": [1, "single", "avoid-escape"],
    "strict": 2,

    // other style
    "space-before-blocks": 2,
    "brace-style": 2,
    "space-after-keywords": 2,
    "comma-dangle": [2, "never"],
    "newline-after-var": [1, "always"],
    "one-var": [2, "never"]
  }
}