rollback to koa-route@^2

example/spa/css/style.css

@@ -1,3 +1,5 @@
 body {
   background-color: IndianRed;
 }
+
+a { color: black }

example/spa/index.html

@@ -3,6 +3,10 @@
 </head>
 <h1>Single Page App</h1>
 <h2>Location: <span></span></h2>
+<ul>
+  <li><a href="/login">/login</a></li>
+  <li><a href="/search">/search</a></li>
+</ul>
 <script>
   document.querySelector('h2 span').textContent = window.location.pathname
 </script>

lib/local-web-server.js

@@ -34,6 +34,7 @@ function localWebServer (options) {
   options = Object.assign({
     static: {},
     serveIndex: {},
+    spa: null,
     log: {},
     compress: false,
     mime: {},
@@ -129,7 +130,7 @@ function localWebServer (options) {
   if (options.spa) {
     const send = require('koa-send')
     app.use(_.all('*', function * () {
-      yield send(this, options.spa, { root: process.cwd() })
+      yield send(this, options.spa, { root: options.static.root || process.cwd() })
     }))
   }
   return app
@@ -146,35 +147,35 @@ function proxyRequest (route) {
     changeOrigin: true
   })
 
-  return function proxyMiddleware (ctx) {
+  return function * proxyMiddleware () {
     const next = arguments[arguments.length - 1]
     const keys = []
     route.re = pathToRegexp(route.from, keys)
-    route.new = ctx.path.replace(route.re, route.to)
+    route.new = this.path.replace(route.re, route.to)
 
     keys.forEach((key, index) => {
       const re = RegExp(`:${key.name}`, 'g')
       route.new = route.new
-        .replace(re, arguments[index + 1] || '')
+        .replace(re, arguments[index] || '')
     })
 
     /* test no keys remain in the new path */
     keys.length = 0
     pathToRegexp(route.new, keys)
     if (keys.length) {
-      ctx.throw(500, `[PROXY] Invalid target URL: ${route.new}`)
+      this.throw(500, `[PROXY] Invalid target URL: ${route.new}`)
       return next()
     }
 
-    ctx.response = false
+    this.response = false
 
     proxy.once('error', err => {
-      ctx.throw(500, `[PROXY] ${err.message}: ${route.new}`)
+      this.throw(500, `[PROXY] ${err.message}: ${route.new}`)
     })
     proxy.once('proxyReq', function (proxyReq) {
       proxyReq.path = url.parse(route.new).path;
     })
-    proxy.web(ctx.req, ctx.res, { target: route.new })
+    proxy.web(this.req, this.res, { target: route.new })
   }
 }
 

package.json

@@ -40,7 +40,7 @@
     "koa-etag": "^2.1.0",
     "koa-morgan": "^0.4.0",
     "koa-rewrite": "^1.1.1",
-    "koa-route": "^3",
+    "koa-route": "^2.4.2",
     "koa-send": "^3.1.0",
     "koa-serve-index": "^1.1.0",
     "koa-static": "^1.5.2",