feat: managed mode

packages/waku/src/lib/builder/build.ts

@@ -48,6 +48,7 @@ import { rscEntriesPlugin } from '../plugins/vite-plugin-rsc-entries.js';
 import { rscServePlugin } from '../plugins/vite-plugin-rsc-serve.js';
 import { rscEnvPlugin } from '../plugins/vite-plugin-rsc-env.js';
 import { rscPrivatePlugin } from '../plugins/vite-plugin-rsc-private.js';
+import { rscManagedPlugin } from '../plugins/vite-plugin-rsc-managed.js';
 import { emitVercelOutput } from './output-vercel.js';
 import { emitNetlifyOutput } from './output-netlify.js';
 import { emitCloudflareOutput } from './output-cloudflare.js';
@@ -103,7 +104,10 @@ const analyzeEntries = async (
     }
   }
   await buildVite({
-    plugins: [rscAnalyzePlugin(clientFileSet, serverFileSet, fileHashMap)],
+    plugins: [
+      rscAnalyzePlugin(clientFileSet, serverFileSet, fileHashMap),
+      rscManagedPlugin(config),
+    ],
     ssr: {
       target: 'webworker',
       resolve: {
@@ -172,6 +176,7 @@ const buildServerBundle = async (
       }),
       rscEnvPlugin({ config }),
       rscPrivatePlugin(config),
+      rscManagedPlugin(config),
       rscEntriesPlugin({
         entriesFile,
         moduleMap: {
@@ -274,6 +279,7 @@ const buildSsrBundle = async (
       rscIndexPlugin({ ...config, cssAssets }),
       rscEnvPlugin({ config }),
       rscPrivatePlugin(config),
+      rscManagedPlugin(config),
     ],
     ssr: isNodeCompatible
       ? {
@@ -338,6 +344,7 @@ const buildClientBundle = async (
       rscIndexPlugin({ ...config, cssAssets }),
       rscEnvPlugin({ config }),
       rscPrivatePlugin(config),
+      rscManagedPlugin(config),
     ],
     build: {
       outDir: joinPath(rootDir, config.distDir, config.publicDir),

packages/waku/src/lib/middleware/dev-server.ts

@@ -20,6 +20,7 @@ import { rscIndexPlugin } from '../plugins/vite-plugin-rsc-index.js';
 import { rscHmrPlugin, hotUpdate } from '../plugins/vite-plugin-rsc-hmr.js';
 import { rscEnvPlugin } from '../plugins/vite-plugin-rsc-env.js';
 import { rscPrivatePlugin } from '../plugins/vite-plugin-rsc-private.js';
+import { rscManagedPlugin } from '../plugins/vite-plugin-rsc-managed.js';
 import { mergeUserViteConfig } from '../utils/merge-vite-config.js';
 import type { Middleware } from './types.js';
 
@@ -78,6 +79,7 @@ export const devServer: Middleware = (options) => {
         patchReactRefresh(viteReact()),
         rscEnvPlugin({ config }),
         rscPrivatePlugin(config),
+        rscManagedPlugin(config),
         rscIndexPlugin(config),
         rscHmrPlugin(),
         { name: 'nonjs-resolve-plugin' }, // dummy to match with dev-worker-impl.ts

packages/waku/src/lib/plugins/vite-plugin-rsc-managed.ts

@@ -0,0 +1,105 @@
+import type { Plugin } from 'vite';
+
+import { joinPath } from '../utils/path.js';
+
+const getManagedMain = () => `
+import { Component, StrictMode } from 'react';
+import { createRoot, hydrateRoot } from 'react-dom/client';
+import { Router } from 'waku/router/client';
+
+class ErrorBoundary extends Component {
+  constructor(props) {
+    super(props);
+    this.state = {};
+  }
+  static getDerivedStateFromError(error) {
+    return { error };
+  }
+  render() {
+    if ('error' in this.state) {
+      return this.props.fallback(this.state.error);
+    }
+    return this.props.children;
+  }
+}
+
+const rootElement = (
+  <StrictMode>
+    <ErrorBoundary fallback={(error) => <h1>{String(error)}</h1>}>
+      <Router />
+    </ErrorBoundary>
+  </StrictMode>
+);
+
+if (document.body.dataset.hydrate) {
+  hydrateRoot(document.body, rootElement);
+} else {
+  createRoot(document.body).render(rootElement);
+}
+`;
+
+const getManagedEntries = () => `
+import { fsRouter } from 'waku/router/server';
+
+export default fsRouter(import.meta.url, loader);
+
+function loader(dir, file) {
+  const p = file.replace(/\\.\\w+$/, '').split('/');
+  switch (p.length) {
+${[...new Array(50).keys()]
+  .map(
+    (i) =>
+      '    case ' +
+      (i + 1) +
+      ': ' +
+      'return import(`./${dir}/' +
+      [...new Array(i + 1).keys()].map((j) => '${p[' + j + ']}').join('/') +
+      '.tsx`);',
+  )
+  .join('\n')}
+    default: throw new Error('too deep');
+  }
+}
+`;
+
+export function rscManagedPlugin(opts: {
+  srcDir: string;
+  entriesJs: string;
+  mainJs?: string;
+}): Plugin {
+  let entriesFile: string | undefined;
+  let mainFile: string | undefined;
+  const mainJsPath = opts.mainJs && '/' + joinPath(opts.srcDir, opts.mainJs);
+  let managedEntries = false;
+  let managedMain = false;
+  return {
+    name: 'rsc-managed-plugin',
+    enforce: 'pre',
+    configResolved(config) {
+      entriesFile = joinPath(config.root, opts.srcDir, opts.entriesJs);
+      if (opts.mainJs) {
+        mainFile = joinPath(config.root, opts.srcDir, opts.mainJs);
+      }
+    },
+    async resolveId(id, importer, options) {
+      const resolved = await this.resolve(id, importer, options);
+      if (!resolved && id === entriesFile) {
+        managedEntries = true;
+        return id;
+      }
+      if (!resolved && (id === mainFile || id === mainJsPath)) {
+        managedMain = true;
+        return id;
+      }
+      return resolved;
+    },
+    load(id) {
+      if (managedEntries && id === entriesFile) {
+        return getManagedEntries();
+      }
+      if (managedMain && (id === mainFile || id === mainJsPath)) {
+        return getManagedMain();
+      }
+    },
+  };
+}

packages/waku/src/lib/renderers/dev-worker-impl.ts

@@ -20,6 +20,7 @@ import { nonjsResolvePlugin } from '../plugins/vite-plugin-nonjs-resolve.js';
 import { rscTransformPlugin } from '../plugins/vite-plugin-rsc-transform.js';
 import { rscEnvPlugin } from '../plugins/vite-plugin-rsc-env.js';
 import { rscPrivatePlugin } from '../plugins/vite-plugin-rsc-private.js';
+import { rscManagedPlugin } from '../plugins/vite-plugin-rsc-managed.js';
 import { rscDelegatePlugin } from '../plugins/vite-plugin-rsc-delegate.js';
 import { mergeUserViteConfig } from '../utils/merge-vite-config.js';
 import { viteHot } from '../plugins/vite-plugin-rsc-hmr.js';
@@ -132,6 +133,7 @@ const mergedViteConfig = await mergeUserViteConfig({
     viteReact(),
     rscEnvPlugin({}),
     rscPrivatePlugin({ privateDir: configPrivateDir }),
+    rscManagedPlugin({ srcDir: configSrcDir, entriesJs: configEntriesJs }),
     { name: 'rsc-index-plugin' }, // dummy to match with handler-dev.ts
     { name: 'rsc-hmr-plugin', enforce: 'post' }, // dummy to match with handler-dev.ts
     nonjsResolvePlugin(),