From c38019e9791e00002bb5434c91b379175abade48 Mon Sep 17 00:00:00 2001
From: Espen Hovlandsdal <espen@hovlandsdal.com>
Date: Thu, 15 Dec 2022 14:54:16 -0800
Subject: [PATCH] feat(css): allow specifying `stopDir` for postcss config
 resolution

---
 docs/config/shared-options.md         | 16 ++++++++++++++++
 packages/vite/src/node/index.ts       |  1 +
 packages/vite/src/node/plugins/css.ts | 15 ++++++++++++++-
 3 files changed, 31 insertions(+), 1 deletion(-)

diff --git a/docs/config/shared-options.md b/docs/config/shared-options.md
index fe04872a8770e4..ea84bd27d1c38b 100644
--- a/docs/config/shared-options.md
+++ b/docs/config/shared-options.md
@@ -222,6 +222,22 @@ The search is done using [postcss-load-config](https://github.com/postcss/postcs
 
 Note if an inline config is provided, Vite will not search for other PostCSS config sources.
 
+## css.resolveOptions
+
+- **Type:** `PostCSSConfigResolutionOptions | false`
+
+Specify options for postcss config resolution. Currently only the [stopDir](https://github.com/davidtheclark/cosmiconfig#stopdir) option for cosmicconfig is supported.
+
+```js
+export default defineConfig({
+  css: {
+    resolveOptions: {
+      stopDir: process.cwd(),
+    },
+  },
+})
+```
+
 ## css.preprocessorOptions
 
 - **Type:** `Record<string, object>`
diff --git a/packages/vite/src/node/index.ts b/packages/vite/src/node/index.ts
index 3ee329d8db6246..5bafc871dbaa25 100644
--- a/packages/vite/src/node/index.ts
+++ b/packages/vite/src/node/index.ts
@@ -71,6 +71,7 @@ export type {
 export type {
   CSSOptions,
   CSSModulesOptions,
+  PostCSSConfigResolutionOptions,
   PreprocessCSSResult,
 } from './plugins/css'
 export type { ChunkMetadata } from './plugins/metadata'
diff --git a/packages/vite/src/node/plugins/css.ts b/packages/vite/src/node/plugins/css.ts
index 9834858bf1a878..5bab1cbf381dfd 100644
--- a/packages/vite/src/node/plugins/css.ts
+++ b/packages/vite/src/node/plugins/css.ts
@@ -74,6 +74,7 @@ export interface CSSOptions {
    * https://github.com/css-modules/postcss-modules
    */
   modules?: CSSModulesOptions | false
+  resolveOptions?: PostCSSConfigResolutionOptions
   preprocessorOptions?: Record<string, any>
   postcss?:
     | string
@@ -88,6 +89,18 @@ export interface CSSOptions {
   devSourcemap?: boolean
 }
 
+/**
+ * Resolve options for postcss config, loaded by cosmicconfig, through
+ * https://github.com/postcss/postcss-load-config
+ */
+export interface PostCSSConfigResolutionOptions {
+  /**
+   * Directory where the search for a PostCSS configuration file will stop.
+   * @default Absolute path to your home directory
+   */
+  stopDir?: string
+}
+
 export interface CSSModulesOptions {
   getJSON?: (
     cssFileName: string,
@@ -1149,7 +1162,7 @@ async function resolvePostcssConfig(
     const searchPath =
       typeof inlineOptions === 'string' ? inlineOptions : config.root
     try {
-      result = await postcssrc({}, searchPath)
+      result = await postcssrc({}, searchPath, config.css?.resolveOptions || {})
     } catch (e) {
       if (!/No PostCSS Config found/.test(e.message)) {
         if (e instanceof Error) {