feat(ssr-streaming): Allow building without index.html during streaming-ssr

packages/cli/src/commands/buildHandler.js

@@ -138,14 +138,17 @@ export const handler = async ({
           )
         }
 
-        console.log('Creating 200.html...')
+        // Streaming SSR does not use the index.html file.
+        if (!getConfig().experimental?.streamingSsr?.enabled) {
+          console.log('Creating 200.html...')
 
-        const indexHtmlPath = path.join(getPaths().web.dist, 'index.html')
+          const indexHtmlPath = path.join(getPaths().web.dist, 'index.html')
 
-        fs.copyFileSync(
-          indexHtmlPath,
-          path.join(getPaths().web.dist, '200.html')
-        )
+          fs.copyFileSync(
+            indexHtmlPath,
+            path.join(getPaths().web.dist, '200.html')
+          )
+        }
       },
     },
   ].filter(Boolean)

packages/vite/src/buildFeServer.ts

@@ -71,13 +71,8 @@ export const buildFeServer = async ({ verbose, webDir }: BuildOptions = {}) => {
     configFile: viteConfigPath,
     build: {
       outDir: rwPaths.web.distServer,
-      ssr: true, // use boolean, and supply the inputs in rollup options (see Documentation)
-      rollupOptions: {
-        input: {
-          'entry.server': rwPaths.web.entryServer,
-          Document: rwPaths.web.document, // We need the document for React's fallback
-        },
-      },
+      ssr: true, // use boolean here, instead of string.
+      // rollup inputs are defined in the vite plugin
     },
     envFile: false,
     logLevel: verbose ? 'info' : 'warn',

packages/vite/src/index.ts

@@ -2,6 +2,7 @@ import { existsSync } from 'fs'
 import path from 'path'
 
 import react from '@vitejs/plugin-react'
+import type { InputOption } from 'rollup'
 import type { ConfigEnv, UserConfig, PluginOption } from 'vite'
 import { normalizePath } from 'vite'
 
@@ -240,6 +241,9 @@ export default function redwoodPluginVite(): PluginOption[] {
             emptyOutDir: true,
             manifest: !env.ssrBuild ? 'build-manifest.json' : undefined,
             sourcemap: !env.ssrBuild && rwConfig.web.sourceMap, // Note that this can be boolean or 'inline'
+            rollupOptions: {
+              input: getRollupInput(!!env.ssrBuild),
+            },
           },
           legacy: {
             buildSsrCjsExternalHeuristics: rwConfig.experimental?.rsc?.enabled
@@ -281,3 +285,32 @@ export default function redwoodPluginVite(): PluginOption[] {
     }),
   ]
 }
+
+/**
+ *
+ * This function configures how vite (actually Rollup) will bundle.
+ *
+ * By default, the entry point is the index.html file - even if you don't specify it in RollupOptions
+ *
+ * With streaming SSR, out entrypoint is different - either entry.client.tsx or entry.server.tsx
+ * and the html file is not used at all, because it is defined in Document.tsx
+ *
+ * @param ssr {boolean} Whether to return the SSR inputs or not
+ * @returns Rollup input Options
+ */
+function getRollupInput(ssr: boolean): InputOption | undefined {
+  const rwConfig = getConfig()
+  const rwPaths = getPaths()
+
+  // @NOTE once streaming ssr is out of experimental, this will become the default
+  if (rwConfig.experimental.streamingSsr.enabled) {
+    return ssr
+      ? {
+          'entry.server': rwPaths.web.entryServer as string,
+          Document: rwPaths.web.document, // We need the document for React's fallback
+        }
+      : (rwPaths.web.entryClient as string)
+  }
+
+  return rwPaths.web.html
+}