diff --git a/scripts/rollup/build.js b/scripts/rollup/build.js
index cc5990aa0bc6d..ff0f9760bde1d 100644
--- a/scripts/rollup/build.js
+++ b/scripts/rollup/build.js
@@ -646,7 +646,9 @@ function handleRollupError(error) {
 }
 
 async function buildEverything() {
-  await asyncRimRaf('build');
+  if (!argv['unsafe-partial']) {
+    await asyncRimRaf('build');
+  }
 
   // Run them serially for better console output
   // and to avoid any potential race conditions.