From 0c8b8179b292992ff0a099e838e623b9b77e778c Mon Sep 17 00:00:00 2001
From: Linus Rath <139418639+rathlinus@users.noreply.github.com>
Date: Thu, 22 Oct 2026 09:08:05 +0200
Subject: [PATCH] perf: load JS modules on first use instead of at startup

---
 metro.config.js | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/metro.config.js b/metro.config.js
index 733f21e8..3ca9fb8b 100644
--- a/metro.config.js
+++ b/metro.config.js
@@ -33,4 +33,14 @@ if (process.env.BULWARK_MODULE_TIMINGS) {
   }
 }
 
+// Evaluate a module when it is first used instead of all of them before the
+// first render. Expo's default leaves this off; React Native's own template
+// turns it on. Side-effect-only imports (`import './x'`) still run in place.
+config.transformer.getTransformOptions = async () => ({
+  transform: {
+    experimentalImportSupport: true,
+    inlineRequires: true,
+  },
+});
+
 module.exports = config;