Updated Drupal to 8.6. This goes with the following updates because it's possible...

[yaffs-website] / web / core / .eslintrc.passing.json

{
  "extends": "./.eslintrc.json",
  "rules": {
    "no-shadow": "off",
    "no-new": "off",
    "no-continue": "off",
    "new-cap": "off",
    "max-len": "off",
    "default-case": "off",
    "prefer-destructuring": "off",
    "react/no-this-in-sfc": "off",
    "react/destructuring-assignment": "off",
    "import/named": "off"
  }
}