From ff432c39f9228759a27c8ef07e760a0106c86626 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicol=C3=B2=20Ribaudo?= <nribaudo@igalia.com>
Date: Tue, 13 May 2025 12:52:29 +0200
Subject: [PATCH] Preserve webpack/vite ignore comments when minifying

They were removed in the minified build, but the code that made the comments necessary was still there (just minified). This commit updates the Terser config to preserve them.

The default value of Terser's `comments` option is [`/@preserve|@copyright|@lic|@cc_on|^\**!/i`](https://github.com/terser/terser/blob/d528103b7c00735ca7736a2a8ad27188e93c0c90/lib/output.js#L178C12-L178C53), however the only type of comment it was actually matching in our case is `@lic`, for the license header in minified files. Thus the new regexp is `/@lic|webpackIgnore|@vite-ignore/i`.
---
 gulpfile.mjs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gulpfile.mjs b/gulpfile.mjs
index fddb74b3b..0c53f9031 100644
--- a/gulpfile.mjs
+++ b/gulpfile.mjs
@@ -362,6 +362,9 @@ function createWebpackConfig(
                   // V8 chokes on very long sequences, work around that.
                   sequences: false,
                 },
+                format: {
+                  comments: /@lic|webpackIgnore|@vite-ignore/i,
+                },
                 keep_classnames: true,
                 keep_fnames: true,
                 module: isModule,