Sort an array by the frequency of elements

Installing

npm i sortbyfrequency;

Importing

import sortByFrequency from "sortbyfrequency"; //ES6
const sortByFrequency = require("sortbyfrequency"); //JS

Usage:

import sortByFrequency from "sortbyfrequency"; //ES6
const sortByFrequency = require("sortbyfrequency"); //JS
let sorted = sortByFrequency(["a", "b", "b", "c", "b", "a"]);
console.log(sorted); //['b', 'a', 'c']