JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgithub.com/lodash/lodash/db82244f56e71000659a1a2a2c8b687ba647d304/dist/lodash.min.js"></script>

JavaScript

var a = [ [1,2,3], [4,5,6], [7,8,9] ];
alert(_.map( a, _.max ));
// gives [3, -Infinity, -Infinity]