.eslintrc

{
  "env": {
    "browser": true
  },
  "plugins": ["eslint-plugin-html"],
  "globals": {
    "Polymer": false
  },
  "rules": {
    "comma-spacing": 2,
    "eol-last": 2,
    "eqeqeq": 2,
    "new-parens": 2,
    "no-debugger": 2,
    "no-dupe-args": 2,
    "no-dupe-keys": 2,
    "no-duplicate-case": 2,
    "no-ex-assign": 2,
    "no-fallthrough": 2,
    "no-invalid-this": 2,
    "no-multiple-empty-lines": [
      2, {
        "max": 1
      }
    ],
    "no-trailing-spaces": 2,
    "no-undef": 2,
    "no-unreachable": 2,
    "no-unused-vars": [
      2, {
        "vars": "all",
        "args": "after-used"
      }
    ],
    "prefer-const": 2,
    "quotes": [
      2, "single", "avoid-escape"
    ],
    "semi": 2,
    "keyword-spacing": 2,
    "space-before-blocks": [
      2, "always"
    ],
    "space-before-function-paren": ["error", {
      "anonymous": "always",
      "named": "ignore",
      "asyncArrow": "ignore"
    }],
    "space-infix-ops": 2,
    "strict": 0,
    "valid-typeof": 2
  }
}