JSFiddle - React, Tailwind, and code Playground
JavaScript
const arr1 = [{a: 'a', b: 'b'}];
const arr2 = [{a:'aa', c: 'c'}];
const merged = Object.assign([], ...arr2, ...arr1);
console.log(merged);
const arr1 = [{a: 'a', b: 'b'}];
const arr2 = [{a:'aa', c: 'c'}];
const merged = Object.assign([], ...arr2, ...arr1);
console.log(merged);