JSFiddle - React, Tailwind, and code Playground
JavaScript
var a = [{ name: 'name 1', id: 1, node: [{ name: 'name2', id: 2 }]}];
console.log(a.map(i => i.node ? [i, ...i.node] : i));
var a = [{ name: 'name 1', id: 1, node: [{ name: 'name2', id: 2 }]}];
console.log(a.map(i => i.node ? [i, ...i.node] : i));