Find index object array in Javascript with Lodash

Install Lodash using NPM or CDN
if you are using ES6 feature, please use :
import _ from 'lodash'
let array = [
{ name: 'John',age:20},
{name: 'Anna', age: 23},
{name: 'Paul',age: 25}
];
let findIndex = _.findIndex(array,{name:'Anna'});
//console.log(findIndex) == 1