chore: Update defaultRoute and errorHandler in sequential router

Author: jkyberneees

lib/router/sequential.js

@@ -2,22 +2,22 @@ const Trouter = require('trouter')
 const qs = require('fast-querystring')
 const next = require('./../next')
 
-const status404 = {
+const STATUS_404 = {
   status: 404
 }
-const status500 = {
+const STATUS_500 = {
   status: 500
 }
 
 module.exports = (config = {}) => {
   if (!config.defaultRoute) {
     config.defaultRoute = () => {
-      return new Response(null, status404)
+      return new Response(null, STATUS_404)
     }
   }
   if (!config.errorHandler) {
     config.errorHandler = (err) => {
-      return new Response(err.message, status500)
+      return new Response(err.message, STATUS_500)
     }
   }