Is there a Javascript function similar to the Python Counter function?

Question

I am attempting to change a program of mine from Python to Javascript and I was wondering if there was a JS function like the Counter function from the collections module in Pyt

Answer 1

There is also pycollections.js, which works on Node and in client-side JS.

Example:

var collections = require('pycollections');
var counter = new collections.Counter([true, true, 'true', 1, 1, 1]);
counter.mostCommon(); // logs [[1, 3], [true, 2], ['true', 1]]