fix(bundled-dev): properly disable inlineConst optimization (#21865)

cal-gooo · claude · web-flow · commit 6d97142abc48 · 2026-03-16T19:50:33.000+09:00
Co-authored-by: Claude Opus 4.6 (1M context) &lt;noreply@anthropic.com&gt;
diff --git a/packages/vite/src/node/server/environments/fullBundleEnvironment.ts b/packages/vite/src/node/server/environments/fullBundleEnvironment.ts
@@ -283,10 +283,10 @@ export class FullBundleDevEnvironment extends DevEnvironment {
       implement: await getHmrImplementation(this.getTopLevelConfig()),
     }
 
-    if (rolldownOptions.optimization) {
-      // disable inlineConst optimization due to a bug in Rolldown
-      rolldownOptions.optimization.inlineConst = false
-    }
+    // disable inlineConst optimization due to a bug in Rolldown
+    // https://github.com/vitejs/vite/issues/21843
+    rolldownOptions.optimization ??= {}
+    rolldownOptions.optimization.inlineConst = false
 
     // set filenames to make output paths predictable so that `renderChunk` hook does not need to be used
     if (Array.isArray(rolldownOptions.output)) {
