JSFiddle - React, Tailwind, and code Playground

HTML

<center>Left is old, right is new.</center>
<br>
<section>
    <table>
        <thead>
            <tr>
                <th>Test</th>
                <th width=75>Status</th>
            </tr>
        </thead>
        <tbody>
        </tbody>
    </table>
    <div>
        <b>Failed Tests: <span>0</span></b>
        <hr>
    </div>
</section>

CSS

section{
    width:50%;
    float:left;
}
body{
    font-family:sans-serif
}
table{
    border:solid 1px #000;
    width:98%;
    margin:1%;
}
th{
    font-weight:bold;
}
td, th{
    border:solid 1px #000;
    padding:.5% 1%;
}
td{
    font-family:monospaced;
}
div{
    padding:1%;
    border:solid 1px #000;
    margin:1%;
}
.red{
    color:red;
    font-weight:bold;
}
code{
    color:rgb(100,50,50);
    background:#eee;
    margin-left:16px;
    padding:1px 2px;
    border:solid rgba(159,0,0,.9) 1px;
}

JavaScript

/**
 * Normalize the given path string,
 * returning a regular expression.
 *
 * An empty array should be passed,
 * which will contain the placeholder
 * key names. For example "/user/:id" will
 * then contain ["id"].
 *
 * @param  {String|RegExp|Array} path
 * @param  {Array} keys
 * @param  {Boolean} sensitive
 * @param  {Boolean} strict
 * @return {RegExp}
 * @api private
 */
var pathRegexp = function(path, keys, sensitive, strict) {
    if (path instanceof RegExp) return path;
    if (Array.isArray(path)) path = '(' + path.join('|') + ')';

    var peek = function(i){ return path[i+1]; },
        reset = function(i){
            startKey = false;
            inKey = false;
            curReg = "";
            curKey = "";
            format = "";
            slash = "";
        },
        clean = function(str){
            return str
                .replace(/([\/.])/g, '\\$1')
                .replace(/\*/g, '(.*)');
        },
        startKey = false,
        inKey = false,
        curReg = "",
        curKey = "",
        format = "",
        slash = "",
        prev = [],
        newPath = "";
    for(var i = 0, l = path.length + 1; i < l; i++){
        var ch = path[i] || "";

        if(!inKey && !startKey && ch === ":"){
            startKey = true;
            if(prev[0] === "."){
                format = "\\.";
                // -2 because the "." character will be escaped with a "\".
                newPath = newPath.substring(0, newPath.length-2);
                if(prev[1] == "/"){
                    slash = "\\/";
                }
            }
            else if(prev[0] === "/"){
                slash = "\\/";
            }
        }
        else if( startKey && ch.match(/\w/) ){
            curKey += ch;
        }
        else if( startKey && ch === "(" ){
            startKey = false;
            inKey = true;
            curReg = ch;
        }
        else if( inKey || startKey ){
            var appendChar = "";
           ...