From 28c5b0b80e3caccb8d6b2082fac393c6de438f3f Mon Sep 17 00:00:00 2001
From: Bruno Windels <bruno@windels.cloud>
Date: Thu, 24 Jun 2021 16:55:22 +0200
Subject: [PATCH] need side-effects for polyfills

---
 scripts/build.mjs | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/scripts/build.mjs b/scripts/build.mjs
index 040d9c69..d83acc4c 100644
--- a/scripts/build.mjs
+++ b/scripts/build.mjs
@@ -47,7 +47,17 @@ const __dirname = dirname(__filename);
 const projectDir = path.join(__dirname, "../");
 const cssSrcDir = path.join(projectDir, "src/platform/web/ui/css/");
 const srcDir = path.join(projectDir, "src/");
-const isPathInSrcDir = path => path.startsWith(srcDir);
+
+const allowSideEffectsTreeShakeDirs = [
+    path.join(projectDir, "node_modules/mdn-polyfills/"),
+    path.join(projectDir, "node_modules/core-js/"),
+    path.join(projectDir, "node_modules/text-encoding/"),
+    srcDir,
+];
+
+const isPathInSrcDir = path => {
+    return allowSideEffectsTreeShakeDirs.some(p => path.startsWith(p));
+};
 
 const parameters = new commander.Command();
 parameters