.eslintrc

{
  "extends": "eslint:recommended",
  "env": {
    "node": true,
    "es6": true
  },
  "parserOptions": {
    "ecmaVersion": 2019
  },
  "rules": {

    "no-prototype-builtins": 0,
    "no-setter-return": 0,

    "require-await": 2,

    // disallow declaration of variables already declared in the outer scope
    "no-shadow": 2,

    // require let or const instead of var
    "no-var": 2,

    "max-len": ["error", 120],

    // require or disallow use of semicolons instead of ASI
    "semi": [2, "never"],

    // require the use of === and !== except null comparison
    "eqeqeq": [2, "smart"],

    // specify whether double or single quotes should be used
    "quotes": [2, "single", "avoid-escape"],

    // require space before/after arrow function's arrow
    "arrow-spacing": [2, { "before": true, "after": true }],

    // suggest using of const declaration for variables that are never modified after declared
    "prefer-const": 2,

    // restrict what can be thrown as an exception
    "no-throw-literal": 2,

    // disallow Unused Expressions
    "no-unused-expressions": [2, { "allowShortCircuit": true }],

    // require padding inside curly braces
    "object-curly-spacing": [2, "always"],

    "valid-jsdoc": [2, {
      "requireReturn": false,
      "requireParamDescription": false,
      "requireReturnDescription": false,
      "prefer": {
        "return": "returns",
        "String": "string",
        "Number": "number",
        "Function": "function"
      }
    }]
  }
}