kibana-123/src/core_plugins/timelion/server/lib/classes/chainable.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

var TimelionFunction = require('./timelion_function');

module.exports = class Chainable extends TimelionFunction {
  constructor(name, config) {
    super(name, config);
    this.chainable = true;
    Object.freeze(this);
  }
};