.eslintrc-base.json

{
  "extends": [
    "eslint:recommended"
  ],
  "env": {
    "node": true,
    "es6": true
  },
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module",
    "requireConfigFile": false
  },
  "rules": {
    "indent": ["error", 4, {"SwitchCase": 1}],
    "linebreak-style": ["error", "unix"],
    "eol-last": ["error"],
    "quotes": ["error", "single"],
    "semi": ["error", "always"],
    "max-len": ["error", {
      "code": 120,
      "ignoreStrings": true,
      "tabWidth": 4,
      "ignoreTemplateLiterals": true
    }],
    "one-var": ["error", "never"],
    "no-multiple-empty-lines": ["error", { "max": 1, "maxEOF": 0, "maxBOF": 0 }],
    "prefer-const": "error",
    "no-unused-vars": ["error", { "vars": "all", "args": "after-used", "ignoreRestSiblings": false }],
    "no-multi-spaces": "error",
    "arrow-parens": ["error", "as-needed"],
    "no-var": "error",
    "require-await": "error",
    "comma-spacing": ["error", { "before": false, "after": true }],
    "quote-props": ["error", "as-needed"],
    "sort-imports": ["error", {
      "ignoreCase": true,
      "ignoreMemberSort": false,
      "memberSyntaxSortOrder": ["all", "single", "multiple", "none"]
    }],
    "sort-vars": "error",
    "comma-dangle": ["error", "never"],
    "no-use-before-define": "error",
    "no-trailing-spaces": "error",
    "key-spacing": ["error", { "afterColon": true }]
  }
}