vinci/util/removeUrlParameter.ts

export default function removeURLParameter(url: string, parameter: string) {
    //prefer to use l.search if you have a location/link object
    var urlparts = url.split('?');   
    if (urlparts.length >= 2) {

        var prefix = encodeURIComponent(parameter) + '=';
        var pars = urlparts[1].split(/[&;]/g);

        //reverse iteration as may be destructive
        for (var i = pars.length; i-- > 0;) {    
            //idiom for string.startsWith
            if (pars[i].lastIndexOf(prefix, 0) !== -1) {  
                pars.splice(i, 1);
            }
        }

        return urlparts[0] + (pars.length > 0 ? '?' + pars.join('&') : '');
    }
    return url;
}