JSFiddle - React, Tailwind, and code Playground
JavaScript
var cfg = { foo: true, disableCaching: true };
var result = Ext.merge({}, cfg, { disableCaching: false });
console.dir(result);
console.dir(cfg);
var cfg = { foo: true, disableCaching: true };
var result = Ext.merge({}, cfg, { disableCaching: false });
console.dir(result);
console.dir(cfg);