fix: unique dep optimizer temp folders

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

@@ -1,4 +1,5 @@
 import fs from 'node:fs'
+import fsp from 'node:fs/promises'
 import path from 'node:path'
 import { performance } from 'node:perf_hooks'
 import _debug from 'debug'
@@ -864,7 +865,10 @@ export function getDepsCacheDir(config: ResolvedConfig, ssr: boolean): string {
 
 function getProcessingDepsCacheDir(config: ResolvedConfig, ssr: boolean) {
  return (
- getDepsCacheDirPrefix(config) + getDepsCacheSuffix(config, ssr) + '_temp'
+ getDepsCacheDirPrefix(config) +
+ getDepsCacheSuffix(config, ssr) +
+ '_temp_' +
+ getHash(Date.now().toString())
  )
 }
 
@@ -1232,3 +1236,26 @@ export async function optimizedDepNeedsInterop(
  }
  return depInfo?.needsInterop
 }
+
+const MAX_TEMP_DIR_AGE_MS = 24 * 60 * 60 * 1000
+export async function cleanupDepsCacheStaleDirs(
+ config: ResolvedConfig,
+): Promise<void> {
+ try {
+ const cacheDir = path.resolve(config.cacheDir)
+ if (fs.existsSync(cacheDir)) {
+ const dirents = await fsp.readdir(cacheDir, { withFileTypes: true })
+ for (const dirent of dirents) {
+ if (dirent.isDirectory() && dirent.name.includes('_temp_')) {
+ const tempDirPath = path.resolve(config.cacheDir, dirent.name)
+ const { mtime } = await fsp.stat(tempDirPath)
+ if (Date.now() - mtime.getTime() > MAX_TEMP_DIR_AGE_MS) {
+ await removeDir(tempDirPath)
+ }
+ }
+ }
+ }
+ } catch (err) {
+ config.logger.error(err)
+ }
+}

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

@@ -34,6 +34,7 @@ import { cjsSsrResolveExternals } from '../ssr/ssrExternal'
 import { ssrFixStacktrace, ssrRewriteStacktrace } from '../ssr/ssrStacktrace'
 import { ssrTransform } from '../ssr/ssrTransform'
 import {
+ cleanupDepsCacheStaleDirs,
  getDepsOptimizer,
  initDepsOptimizer,
  initDevSsrDepsOptimizer,
@@ -690,6 +691,10 @@ export async function createServer(
  await initServer()
  }
 
+ // Fire a clean up of stale cache dirs, in case old processes didn't
+ // terminate correctly. Don't await this promise
+ cleanupDepsCacheStaleDirs(config)
+
  return server
 }