.eslintrc.json

{
  "extends": "eslint:recommended",
  "env": {
    "browser": true,
    "es6": true
  },
  "rules": {
    "no-console": "off",
    "array-callback-return": "warn",
    "indent": "off",
    "indent-legacy": [
      "error",
      4,
      {
        "SwitchCase": 1
      }
    ],
    "no-multi-spaces": "error",
    "linebreak-style": [
      "error",
      "unix"
    ],
    "semi": [
      "error",
      "always"
    ],
    "no-sequences": "error",
    "comma-spacing": "error",
    "comma-dangle": [
      "error",
      "never"
    ],
    "dot-notation": "error",
    "quotes": [
      "error",
      "single"
    ],
    "brace-style": [
      "error",
      "1tbs",
      {
        "allowSingleLine": true
      }
    ],
    "camelcase": "error",
    "no-var": "error",
    "block-scoped-var": "error",
    "consistent-this": [
      "warn",
      "that"
    ],
    "eqeqeq": "error",
    "guard-for-in": "warn",
    "object-shorthand": "error",
    "arrow-spacing": "error",
    "prefer-arrow-callback": "error",
    "arrow-body-style": [
      "error",
      "as-needed"
    ],
    "valid-jsdoc": "error",
    "capitalized-comments": [
      "warn",
      "always",
      {
        "ignoreConsecutiveComments": true
      }
    ],
    "no-global-assign": "warn",
    "strict": [
      "warn",
      "global"
    ],
    "object-curly-spacing": [
      "error",
      "always"
    ]
  },
  "settings": {
    "html/indent": "+4",
    "html/report-bad-indent": "error"
  },
  "plugins": [
    "html"
  ],
  "globals": {
    "Polymer": false,
    "define": false,
    "require": false,
    "exports": false,
    "Plotly": false
  },
  "parserOptions": {
    "sourceType": "module"
  },
  "overrides": [
    {
      "files": ["src/fonts/**/*"],
      "rules": {
        "quotes": "off",
        "object-curly-spacing": "off",
        "comma-spacing": "off",
        "camelcase": "off"
      }
    }
  ]
}