URL constructing function with ascending arguments

url-constructor.ts

export function format(str, argumentsArr?) {
    let urlConstruct = str;
    for (var i = 0; i < argumentsArr.length; i++) {
        // g - global search, m - multiline
        let regEx = new RegExp("\\{" + (i) + "\\}", 'gm');
        // Handle multiple whitespaces in STRING type arguments
        if (typeof(argumentsArr[i]) === 'string') {
            argumentsArr[i] = argumentsArr[i].replace(/\s/g, '');
        }
        // Add to url construct
        urlConstruct = urlConstruct.replace(regEx, argumentsArr[i]);
    }
    return urlConstruct;
}

// Will work like so(endless amount of args):
// url should look like this to work : http://{0}/{1}/{2} and so on...
format(str, 1stArg?, 2ndArg?, 3rdArg?)