.eslintrc.json

{
  "root": true,
  "extends": "airbnb-base",
  "rules": {
    // Require spaces before comments...
    "lines-around-comment": [
      "error",
      {
        // ...except when first line of array, or...
        "allowArrayStart": true,
        // ...except when first line of block, or...
        "allowBlockStart": true,
        // ...except when first line of object.
        "allowObjectStart": true
      }
    ],
    // Visually set-off the var assignment from the rest of code.
    "newline-after-var": "error",
    // Visually set-off the return from the rest of code.
    "newline-before-return": "error",
    // Require developers to describe function purpose, arguments, and returns.
    "require-jsdoc": "error",
    // Require valid JSDoc.
    "valid-jsdoc": [
      "error",
      {
        // Only require @return if there's a return statement.
        "requireReturn": false
      }
    ]
  }
}