JSFiddle - React, Tailwind, and code Playground

JavaScript

var myObj =[{"4":"installation.diagnostics.status"},{"2":"installation.diagnostics.status"},{"3":"installation.diagnostics.status"}];

function compare(a, b) {
  var ak = Object.keys(a)[0];
  var bk = Object.keys(b)[0];
  if (ak < bk) return -1;
  if (ak > bk) return 1;
  return 0;
}

myObj.sort(compare)

console.log(myObj);