From 9084f74be76f6e7a0bf300dfe2c1c0e68395eca6 Mon Sep 17 00:00:00 2001
From: Jon Coppeard <jcoppeard@mozilla.com>
Date: Mon, 28 Jan 2019 10:53:29 +0000
Subject: [PATCH] Bug 1522491 - Enable dynamic module import on nightly builds
 only r=smaug

---
 modules/libpref/init/all.js | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/modules/libpref/init/all.js b/modules/libpref/init/all.js
index fa317c491f61..b5e9a0278a1b 100644
--- a/modules/libpref/init/all.js
+++ b/modules/libpref/init/all.js
@@ -1606,7 +1606,11 @@ pref("javascript.options.streams", true);
 pref("javascript.options.bigint", false);
 
 // Dynamic module import.
+#ifdef NIGHTLY_BUILD
+pref("javascript.options.dynamicImport", true);
+#else
 pref("javascript.options.dynamicImport", false);
+#endif
 
 // advanced prefs
 pref("advanced.mailftp",                    false);