fix(bundle-source): assert that the entrypoint exists at all

closes #1206
endojs · Aug 16, 2022 · 2b92db7 · 2b92db7
1 parent fe9c784
commit 2b92db7
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diff --git a/packages/bundle-source/src/index.js b/packages/bundle-source/src/index.js
@@ -402,6 +402,7 @@ export default async function bundleSource(
   options = {},
   powers = undefined,
 ) {
+  assert(fs.existsSync(startFilename));
   if (typeof options === 'string') {
     options = { format: options };
   }

diff --git a/packages/bundle-source/test/test-missing-entrypoint.js b/packages/bundle-source/test/test-missing-entrypoint.js
@@ -0,0 +1,9 @@
+import { lockdown } from '@endo/lockdown';
+
+import test from 'ava';
+import bundleSource from '../src/index.js';
+
+test(`missing entrypoint`, async t => {
+  await t.throwsAsync(() => bundleSource('___missing.js', 'endoZipBase64'),
+                      { message: 'xxx' });
+});