fix: allow .jsx entry-server (#2090)

huseeiin · birkskyum · web-flow · commit d2f062123950 · 2026-07-16T23:22:36.000+02:00
Co-authored-by: Birk Skyum &lt;74932975+birkskyum@users.noreply.github.com&gt;
Co-authored-by: Birk Skyum &lt;birk.skyum@pm.me&gt;
diff --git a/.changeset/warm-cats-juggle.md b/.changeset/warm-cats-juggle.md
@@ -0,0 +1,5 @@
+---
+"@solidjs/start": patch
+---
+
+Support JavaScript projects whose app and client/server entries use `.jsx`.
diff --git a/apps/fixtures/bare-js/package.json b/apps/fixtures/bare-js/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "fixture-bare-js",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "vite dev",
+    "build": "vite build"
+  },
+  "dependencies": {
+    "@solidjs/start": "workspace:*",
+    "nitro": "^3.0.260610-beta",
+    "solid-js": "^1.9.11",
+    "vite": "^8.0.0"
+  },
+  "engines": {
+    "node": ">=24"
+  }
+}
diff --git a/apps/fixtures/bare-js/src/app.jsx b/apps/fixtures/bare-js/src/app.jsx
@@ -0,0 +1,14 @@
+import { createSignal } from "solid-js";
+
+export default function App() {
+  const [count, setCount] = createSignal(0);
+
+  return (
+    <main>
+      <h1>Hello world!</h1>
+      <button onClick={() => setCount(count() + 1)} type="button">
+        Clicks: {count()}
+      </button>
+    </main>
+  );
+}
diff --git a/apps/fixtures/bare-js/src/entry-client.jsx b/apps/fixtures/bare-js/src/entry-client.jsx
@@ -0,0 +1,4 @@
+// @refresh reload
+import { mount, StartClient } from "@solidjs/start/client";
+
+mount(() => <StartClient />, document.getElementById("app"));
diff --git a/apps/fixtures/bare-js/src/entry-server.jsx b/apps/fixtures/bare-js/src/entry-server.jsx
@@ -0,0 +1,20 @@
+// @refresh reload
+import { createHandler, StartServer } from "@solidjs/start/server";
+
+export default createHandler(() => (
+  <StartServer
+    document={({ assets, children, scripts }) => (
+      <html lang="en">
+        <head>
+          <meta charset="utf-8" />
+          <meta name="viewport" content="width=device-width, initial-scale=1" />
+          {assets}
+        </head>
+        <body>
+          <div id="app">{children}</div>
+          {scripts}
+        </body>
+      </html>
+    )}
+  />
+));
diff --git a/apps/fixtures/bare-js/vite.config.js b/apps/fixtures/bare-js/vite.config.js
@@ -0,0 +1,7 @@
+import { nitro } from "nitro/vite";
+import { defineConfig } from "vite";
+import { solidStart } from "../../../packages/start/src/config/index.ts";
+
+export default defineConfig({
+  plugins: [solidStart(), nitro()],
+});
diff --git a/packages/start/src/config/dev-server.ts b/packages/start/src/config/dev-server.ts
@@ -10,7 +10,7 @@ import {
 } from "vite";
 import { VITE_ENVIRONMENTS } from "./constants.ts";
 
-export function devServer(): Array<PluginOption> {
+export function devServer(serverEntryPath: string): Array<PluginOption> {
   return [
     {
       name: "solid-start-dev-server",
@@ -62,7 +62,7 @@ export function devServer(): Array<PluginOption> {
             try {
               const serverEntry: {
                 default: { fetch: (req: Request) => Promise<Response> };
-              } = await serverEnv.runner.import("./src/entry-server.tsx");
+              } = await serverEnv.runner.import(serverEntryPath);
 
               const webRes = await serverEntry.default.fetch(webReq);
 
diff --git a/packages/start/src/config/index.ts b/packages/start/src/config/index.ts
@@ -70,8 +70,8 @@ export function solidStart(options?: SolidStartOptions): Array<PluginOption> {
     serverFunctionsPlugin({
       manifest: VIRTUAL_MODULES.serverFnManifest,
       runtime: {
-        server: '@solidjs/start/fns/server',
-        client: '@solidjs/start/fns/client',
+        server: "@solidjs/start/fns/server",
+        client: "@solidjs/start/fns/client",
       },
       filter: options?.serverFunctions?.filter,
     }),
@@ -136,7 +136,7 @@ export function solidStart(options?: SolidStartOptions): Array<PluginOption> {
                 manifest: true,
                 copyPublicDir: false,
                 rollupOptions: {
-                  input: "~/entry-server.tsx",
+                  input: handlers.server,
                 },
                 outDir: "dist/server",
                 commonjsOptions: {
@@ -236,7 +236,7 @@ export function solidStart(options?: SolidStartOptions): Array<PluginOption> {
         (globalThis as any).START_CLIENT_OUT_DIR = options.dir;
       },
     },
-    devServer(),
+    devServer(handlers.server),
     solid({
       ...start.solid,
       ssr: true,
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml

-Original file line number
+Diff line change
@@ @@ -0,0 +1,5 @@ @@
 +---
 +"@solidjs/start": patch
 +---
++
 +Support JavaScript projects whose app and client/server entries use `.jsx`.