From b98ab39a1338889a75b911a9cc1990f82530b651 Mon Sep 17 00:00:00 2001
From: Aric Camarata <aric.camarata@gmail.com>
Date: Wed, 25 Feb 2026 14:14:42 -0500
Subject: [PATCH] fix: mark dist files as having side effects

The index module registers built-in calendar engines at load time via
registerCalendar(). sideEffects:false was incorrect and could cause
bundlers to tree-shake those registration calls. Mark only the dist
entry points as having side effects so tree-shaking still works for
everything else.
---
 package.json | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/package.json b/package.json
index 8cdf0d0..d2779a3 100644
--- a/package.json
+++ b/package.json
@@ -13,7 +13,7 @@
       "require": { "types": "./dist/index.d.ts", "default": "./dist/index.cjs" }
     }
   },
-  "sideEffects": false,
+  "sideEffects": ["./dist/index.cjs", "./dist/index.mjs"],
   "files": [
     "dist/index.cjs",
     "dist/index.mjs",