Parse url params to object

params_to_object.js

const parseParams = (querystring) => {

    // parse query string
    const params = new URLSearchParams(querystring);

    const obj = {};

    // iterate over all keys
    for (const key of params.keys()) {
        if (params.getAll(key).length > 1) {
            obj[key] = params.getAll(key);
        } else {
            obj[key] = params.get(key);
        }
    }

    return obj;
};