From 8be5ff0038f7b8719fd4987002bca6858d5e2011 Mon Sep 17 00:00:00 2001
From: feng <f3n67u@outlook.com>
Date: Mon, 28 Mar 2022 20:30:11 +0800
Subject: [PATCH] add comment

---
 packages/jest-transform/src/ScriptTransformer.ts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/packages/jest-transform/src/ScriptTransformer.ts b/packages/jest-transform/src/ScriptTransformer.ts
index 1864319361c2..b1ab7a935f45 100644
--- a/packages/jest-transform/src/ScriptTransformer.ts
+++ b/packages/jest-transform/src/ScriptTransformer.ts
@@ -759,6 +759,7 @@ class ScriptTransformer {
         }
       },
       {
+        // Exclude `mjs` extension when addHook because pirates don't support hijack es module
         exts: this._config.moduleFileExtensions
           .filter(ext => ext !== 'mjs')
           .map(ext => `.${ext}`),