From f08e1b962871b28103131ddb479bf46087dca0cb Mon Sep 17 00:00:00 2001
From: sapphi-red <49056869+sapphi-red@users.noreply.github.com>
Date: Fri, 27 Feb 2026 12:54:46 +0900
Subject: [PATCH] refactor: avoid deprecated `legalComments` option

---
 packages/vite/src/node/build.ts           | 10 +++++++++-
 packages/vite/src/node/optimizer/index.ts |  1 -
 playground/lib/vite.config.js             |  2 +-
 playground/minify/vite.config.js          |  5 -----
 4 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/packages/vite/src/node/build.ts b/packages/vite/src/node/build.ts
index 761b9dd5fac23d..cd079b58195361 100644
--- a/packages/vite/src/node/build.ts
+++ b/packages/vite/src/node/build.ts
@@ -737,7 +737,15 @@ export function resolveRolldownOptions(
           (typeof input === 'string' || Object.keys(input).length === 1))
           ? false
           : undefined),
-      legalComments: 'none',
+      comments:
+        typeof output.comments === 'boolean'
+          ? output.comments
+          : {
+              annotation: !options.minify,
+              jsdoc: !options.minify,
+              legal: !options.minify,
+              ...output.comments,
+            },
       minify:
         options.minify === 'oxc'
           ? libOptions && (format === 'es' || format === 'esm')
diff --git a/packages/vite/src/node/optimizer/index.ts b/packages/vite/src/node/optimizer/index.ts
index 460cdc7f7ae43c..8d003813e03ba9 100644
--- a/packages/vite/src/node/optimizer/index.ts
+++ b/packages/vite/src/node/optimizer/index.ts
@@ -846,7 +846,6 @@ async function prepareRolldownOptimizerRun(
       throw new Error('The build was canceled')
     }
     const result = await bundle.write({
-      legalComments: 'none',
       ...rolldownOptions.output,
       format: 'esm',
       sourcemap: true,
diff --git a/playground/lib/vite.config.js b/playground/lib/vite.config.js
index f25bdfc5e7b81d..0ddb37f3d6b9e9 100644
--- a/playground/lib/vite.config.js
+++ b/playground/lib/vite.config.js
@@ -17,7 +17,7 @@ export default defineConfig({
     target: 'chrome46',
     rollupOptions: {
       output: {
-        legalComments: 'inline',
+        comments: { legal: true },
         banner: `/*!\nMayLib\n*/`,
       },
     },
diff --git a/playground/minify/vite.config.js b/playground/minify/vite.config.js
index a23f2bc8147c0a..69b96c12569ea7 100644
--- a/playground/minify/vite.config.js
+++ b/playground/minify/vite.config.js
@@ -8,10 +8,5 @@ export default defineConfig({
   build: {
     minify: 'esbuild',
     cssMinify: 'esbuild',
-    rollupOptions: {
-      output: {
-        legalComments: 'none',
-      },
-    },
   },
 })