function (path, preserveJsx) {
            if (typeof path === "string" && /^\.\.?\//.test(path)) {
                return path.replace(/\.(tsx)$|((?:\.d)?)((?:\.[^./]+?)?)\.([cm]?)ts$/i, function (m, tsx, d, ext, cm) {
                    return tsx ? preserveJsx ? ".jsx" : ".js" : d && (!ext || !cm) ? m : (d + ext + "." + cm.toLowerCase() + "js");
                });
            }
            return path;
        };