Simple query string parser

parseQueryString.js

/*
  Example:
   parseQueryString('?foo=hi&bar=World%20Hello')
   {
    foo: "hi",
    bar: "Hello World"
   }
*/

/**
 * parseQueryString Very simplified querystring parser
 * @param  {string} [queryString] Query string to be parsed. Defaults to current location.search
 * @return {object} returns a key:value object
 * @author Victor N <victornunes@lett.digital> 
 */
function parseQueryString(queryString) {
    var qs = queryString || window.location.search;
    var params = {};
    qs.replace(/^\?/, '').split('&').forEach(text => {
        var p = text.split('=');
        var key = decodeURIComponent(p[0]);
        var value = decodeURIComponent(p[1]);
        if(key) params[key] = value;
    });
    return params;
}