JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>

JavaScript

var objects = 
{ 
   0: {"filter": "filter-1", "value":"value-1"},
   1: {"filter": "filter-1", "value":"value-2"},
   2: {"filter": "filter-2", "value":"value-3"},
   3: {"filter": "filter-3", "value":"value-4"}
}

var result = _.groupBy(objects,"filter")

console.log(result)