fix(build): guard packaged renderer bundles

scripts/ci/verify-radix-renderer-bundle.mjs

@@ -7,7 +7,12 @@ const rendererBundles = readdirSync(assetsDir)
   .sort();
 
 if (rendererBundles.length === 0) {
-  console.error('No renderer JavaScript bundles found under out/renderer/assets.');
+  console.error(
+    [
+      'No renderer JavaScript bundles found under out/renderer/assets.',
+      'Run `pnpm build` before packaging production artifacts.',
+    ].join('\n')
+  );
   process.exit(1);
 }
 

scripts/electron-builder/dist.mjs

@@ -1,13 +1,32 @@
 #!/usr/bin/env node
 import { spawn } from 'node:child_process';
 import { createRequire } from 'node:module';
-import { pathToFileURL } from 'node:url';
+import { fileURLToPath, pathToFileURL } from 'node:url';
 
 const require = createRequire(import.meta.url);
 const { buildElectronBuilderInvocations } = require('./dist-invocations.cjs');
 
 export { buildElectronBuilderInvocations };
 
+async function runRendererBundleGuard() {
+  const guardPath = fileURLToPath(new URL('../ci/verify-radix-renderer-bundle.mjs', import.meta.url));
+  await new Promise((resolve, reject) => {
+    const child = spawn(process.execPath, [guardPath], {
+      stdio: 'inherit',
+      env: process.env,
+    });
+
+    child.on('error', reject);
+    child.on('exit', (code, signal) => {
+      if (code === 0) {
+        resolve();
+        return;
+      }
+      reject(new Error(`renderer bundle guard failed with ${signal ?? `exit code ${code}`}`));
+    });
+  });
+}
+
 async function runElectronBuilder(args) {
   const cliPath = require.resolve('electron-builder/cli.js');
   await new Promise((resolve, reject) => {
@@ -41,6 +60,8 @@ async function main(argv) {
     return;
   }
 
+  await runRendererBundleGuard();
+
   for (const invocation of invocations) {
     await runElectronBuilder(invocation.args);
   }