support redirect event on stream

Author: JounQin

package.json

@@ -1,6 +1,6 @@
 {
   "name": "react-server-renderer",
-  "version": "0.0.1",
+  "version": "0.1.0",
   "description": "simple React SSR solution inspired by vue-server-render",
   "repository": "git@github.com:JounQin/react-server-render.git",
   "main": "lib/index.js",

src/bundle-renderer/create-bundle-renderer.ts

@@ -120,7 +120,7 @@ export function createBundleRendererCreator(
         return promise
       },
 
-      renderToStream: (context?: UserContext) => {
+      renderToStream: (context: UserContext = {}) => {
         const res = new PassThrough()
         run(context)
           .catch(err => {
@@ -142,12 +142,10 @@ export function createBundleRendererCreator(
 
               // relay HTMLStream special events
               if (rendererOptions && rendererOptions.template) {
-                renderStream.on('beforeStart', () => {
-                  res.emit('beforeStart')
-                })
-                renderStream.on('beforeEnd', () => {
-                  res.emit('beforeEnd')
-                })
+                renderStream
+                  .on('beforeStart', () => res.emit('beforeStart'))
+                  .on('beforeEnd', () => res.emit('beforeEnd'))
+                  .on('redirect', url => res.emit('redirect', url))
               }
 
               renderStream.pipe(res)

src/create-renderer.ts

@@ -65,18 +65,24 @@ export function createRenderer(
 
     renderToStream(
       component: ReactElement<any>,
-      context?: UserContext,
+      context: UserContext,
     ): NodeJS.ReadableStream {
-      if (context) {
-        templateRenderer.bindRenderFns(context)
-      }
-
       const renderStream = renderToNodeStream(component)
 
-      if (!options.template) {
+      const { url } = context
+
+      if (url) {
+        process.nextTick(() => {
+          renderStream.emit('redirect', url)
+        })
+      }
+
+      if (!options.template || url) {
         return renderStream
       }
 
+      templateRenderer.bindRenderFns(context)
+
       const templateStream = templateRenderer.createStream(context)
       renderStream.on('error', err => templateStream.emit('error', err))
       renderStream.pipe(templateStream)

src/util.ts

@@ -24,7 +24,9 @@ export interface UserContext {
   head?: string
   styles?: string
   getPreloadFiles?: any
+  url?: string
   _styles?: any
   _mappedFiles?: any
   _registeredComponents?: Set<any>
+  [key: string]: any
 }