fix: handle yarn command fail when root does not exist (#18141)

packages/vite/src/node/server/index.ts

@@ -92,7 +92,7 @@ import {
 import { openBrowser as _openBrowser } from './openBrowser'
 import type { TransformOptions, TransformResult } from './transformRequest'
 import { transformRequest } from './transformRequest'
-import { searchForWorkspaceRoot } from './searchRoot'
+import { searchForPackageRoot, searchForWorkspaceRoot } from './searchRoot'
 import { warmupFiles } from './warmup'
 import type { DevEnvironment } from './environment'
 
@@ -1045,14 +1045,17 @@ export function resolveServerOptions(
   }
 
   if (process.versions.pnp) {
+    // running a command fails if cwd doesn't exist and root may not exist
+    // search for package root to find a path that exists
+    const cwd = searchForPackageRoot(root)
     try {
       const enableGlobalCache =
-        execSync('yarn config get enableGlobalCache', { cwd: root })
+        execSync('yarn config get enableGlobalCache', { cwd })
           .toString()
           .trim() === 'true'
       const yarnCacheDir = execSync(
         `yarn config get ${enableGlobalCache ? 'globalFolder' : 'cacheFolder'}`,
-        { cwd: root },
+        { cwd },
       )
         .toString()
         .trim()