JSFiddle - React, Tailwind, and code Playground

HTML

<pre id="result"></pre>

JavaScript

let arr = [{
  name: 'test1',
  avatar: 'url1'
},
{
  name: 'test2',
  avatar: 'url2'
},
{
  name: 'test3',
  avatar: 'url3'
}];

let name = 'test2'
arr.sort(function(elem1, elem2) {
	return elem1.name === name ? 1 : elem2.name === name ? -1 : 0;
});

document.getElementById('result').innerHTML = JSON.stringify(arr, null, 2);