@spalger/kibana/src/utils/pathContains.js

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

let relative = require('path').relative;

module.exports = function pathContains(root, child) {
  return relative(child, root).slice(0, 2) !== '..';
};