diff --git a/scripts/build/esbuild-plugins/umd.mjs b/scripts/build/esbuild-plugins/umd.mjs
index 4310f1262..943b8355e 100644
--- a/scripts/build/esbuild-plugins/umd.mjs
+++ b/scripts/build/esbuild-plugins/umd.mjs
@@ -133,7 +133,7 @@ export default function esbuildPluginUmd(options) {
             text.slice(
               expectedOutput.start.length,
               -expectedOutput.end.length
-            ) +
+            ).trimEnd() +
             outro
         );
       });