From 2fe98baf3760079c2ad5950efe1d2e523137c863 Mon Sep 17 00:00:00 2001
From: Henry Dineen <hdineen@hubspot.com>
Date: Tue, 12 Aug 2025 17:20:19 -0400
Subject: [PATCH] fix: compilation.errors should contain Error objects

---
 index.js | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/index.js b/index.js
index 7ce48402..efe592d6 100644
--- a/index.js
+++ b/index.js
@@ -1307,7 +1307,9 @@ class HtmlWebpackPlugin {
 
     if ("error" in templateResult) {
       compilation.errors.push(
-        prettyError(templateResult.error, compiler.context).toString(),
+        new Error(
+          prettyError(templateResult.error, compiler.context).toString(),
+        ),
       );
     }
 
@@ -1497,7 +1499,9 @@ class HtmlWebpackPlugin {
       .catch((err) => {
         // In case anything went wrong the promise is resolved
         // with the error message and an error is logged
-        compilation.errors.push(prettyError(err, compiler.context).toString());
+        compilation.errors.push(
+          new Error(prettyError(err, compiler.context).toString()),
+        );
         return this.options.showErrors
           ? prettyError(err, compiler.context).toHtml()
           : "ERROR";