From b1209bbfb28e430f4032df4e4cdd90f4d3376ed1 Mon Sep 17 00:00:00 2001
From: sun0day <sun_day500@163.com>
Date: Tue, 5 Sep 2023 10:45:43 +0800
Subject: [PATCH] fix(css): remove pure css chunk sourcemap

---
 packages/vite/src/node/plugins/css.ts               |  1 +
 .../__tests__/lib-entry/lib-entry.spec.ts           |  8 ++++++++
 playground/css-sourcemap/index.js                   |  1 +
 playground/css-sourcemap/vite.config-lib-entry.js   | 13 +++++++++++++
 4 files changed, 23 insertions(+)
 create mode 100644 playground/css-sourcemap/__tests__/lib-entry/lib-entry.spec.ts
 create mode 100644 playground/css-sourcemap/index.js
 create mode 100644 playground/css-sourcemap/vite.config-lib-entry.js

diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index a9fcf4a50c13aa..da1ef1fcfecefe 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -786,6 +786,7 @@ export function cssPostPlugin(config: ResolvedConfig): Plugin {
         pureCssChunkNames.forEach((fileName) => {
           removedPureCssFiles.set(fileName, bundle[fileName] as RenderedChunk)
           delete bundle[fileName]
+          delete bundle[`${fileName}.map`]
         })
       }
 
diff --git a/playground/css-sourcemap/__tests__/lib-entry/lib-entry.spec.ts b/playground/css-sourcemap/__tests__/lib-entry/lib-entry.spec.ts
new file mode 100644
index 00000000000000..d2fa5f7d2c31e7
--- /dev/null
+++ b/playground/css-sourcemap/__tests__/lib-entry/lib-entry.spec.ts
@@ -0,0 +1,8 @@
+import { describe, expect, test } from 'vitest'
+import { findAssetFile, isBuild } from '~utils'
+
+describe.runIf(isBuild)('css lib entry', () => {
+  test('remove useless js sourcemap', async () => {
+    expect(findAssetFile('linked.js.map', 'lib-entry', './')).toBe('')
+  })
+})
diff --git a/playground/css-sourcemap/index.js b/playground/css-sourcemap/index.js
new file mode 100644
index 00000000000000..c05f09558ddaf0
--- /dev/null
+++ b/playground/css-sourcemap/index.js
@@ -0,0 +1 @@
+export default 'hello'
diff --git a/playground/css-sourcemap/vite.config-lib-entry.js b/playground/css-sourcemap/vite.config-lib-entry.js
new file mode 100644
index 00000000000000..600b7414a48b75
--- /dev/null
+++ b/playground/css-sourcemap/vite.config-lib-entry.js
@@ -0,0 +1,13 @@
+import { defineConfig } from 'vite'
+
+export default defineConfig({
+  build: {
+    cssCodeSplit: true,
+    sourcemap: true,
+    outDir: 'dist/lib-entry',
+    lib: {
+      entry: ['./index.js', './linked.css'],
+      formats: ['es'],
+    },
+  },
+})