JSFiddle - React, Tailwind, and code Playground
HTML
<pre id='pre'></pre>
JavaScript
const data = {1: {
name: "a",
type: "aa"
},
2:{
name: "b",
type: "a"
}};
const res = Object.values(data).filter(i => i.type === 'self')[0];
$('#pre').text(JSON.stringify(res));