feat(multi-entry)!: ensure deterministic order

packages/multi-entry/src/index.js

@@ -60,7 +60,9 @@ export default function multiEntry(conf = {}) {
     buildStart(options) {
       const patterns = config.include.concat(config.exclude.map((pattern) => `!${pattern}`));
       const entries = patterns.length
-        ? matched(patterns, { realpath: true }).then((paths) => paths.map(exporter).join('\n'))
+        ? matched(patterns, { realpath: true }).then((paths) =>
+            paths.sort().map(exporter).join('\n')
+          )
         : Promise.resolve('');
 
       virtualisedEntry = virtual({ [options.input]: entries });

packages/multi-entry/test/test.mjs

@@ -131,3 +131,19 @@ test('makes a bundle with entryFileName as the output.entryFileName when preserv
   t.truthy(nonVirtualFiles.find(({ fileName }) => fileName === 'entry-0.js'));
   t.truthy(nonVirtualFiles.find(({ fileName }) => fileName === 'entry-1.js'));
 });
+
+test('deterministic output, regardless of input order', async (t) => {
+  const bundle1 = await rollup({
+    input: 'test/fixtures/{0,1}.js',
+    plugins: [multiEntry()]
+  });
+  const code1 = await getCode(bundle1);
+
+  const bundle2 = await rollup({
+    input: 'test/fixtures/{1,0}.js',
+    plugins: [multiEntry()]
+  });
+  const code2 = await getCode(bundle2);
+
+  t.is(code1, code2);
+});