// TypeScript
import { queryString } from 'object-query-string';

// Node.js
const { queryString } = require("object-query-string");

const query = queryString({
    filter: {
        brands: ["Audi"],
        models: ["A4", "A6", "A8"],
        accidentFree: true
    },
    sort: 'mileage'
});

// queryString(params : string, options : object|undefined)

// default options
queryString(params, {
    separator: '&', // string 
    encode: encodeURIComponent, // function(string) : string
    encodeBrackets: false, // foo[baz]=1 or foo%5Bbaz%5D=1
});