feat(optimizer): add rush lockfile support

docs/config/dep-optimization-options.md

@@ -78,6 +78,25 @@ Certain options are omitted since changing them would not be compatible with Vit
 
 Set to `true` to force dependency pre-bundling, ignoring previously cached optimized dependencies.
 
+## optimizeDeps.lockFilePath <NonInheritBadge />
+
+- **Experimental**
+- **Type:** `string`
+
+Path to a custom lockfile to use for dependency optimization hash calculation. When specified, Vite will use this lockfile instead of searching for standard lockfiles (package-lock.json, yarn.lock, pnpm-lock.yaml, etc.).
+
+This is useful for monorepo tools like Rush.js that place lockfiles in non-standard locations such as `.rush/temp/shrinkwrap-deps.json`.
+
+```js twoslash
+import { defineConfig } from 'vite'
+// ---cut---
+export default defineConfig({
+  optimizeDeps: {
+    lockFilePath: '.rush/temp/shrinkwrap-deps.json',
+  },
+})
+```
+
 ## optimizeDeps.noDiscovery <NonInheritBadge />
 
 - **Type:** `boolean`

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

@@ -82,6 +82,15 @@ export interface DepOptimizationConfig {
    * @experimental
    */
   needsInterop?: string[]
+  /**
+   * Path to a custom lockfile to use for dependency optimization hash calculation.
+   * When specified, Vite will use this lockfile instead of searching for standard
+   * lockfiles (package-lock.json, yarn.lock, pnpm-lock.yaml, etc.).
+   * This is useful for monorepo tools like Rush.js that place lockfiles in
+   * non-standard locations.
+   * @experimental
+   */
+  lockFilePath?: string
   /**
    * Options to pass to esbuild during the dep scanning and optimization
    *
@@ -1249,6 +1258,12 @@ const lockfileFormats = [
     checkPatchesDir: 'patches',
     manager: 'bun',
   },
+  {
+    path: '.rush/temp/shrinkwrap-deps.json',
+    // Included in lockfile
+    checkPatchesDir: false,
+    manager: 'pnpm',
+  },
 ].sort((_, { manager }) => {
   return process.env.npm_config_user_agent?.startsWith(manager) ? 1 : -1
 })
@@ -1292,7 +1307,22 @@ function getConfigHash(environment: Environment): string {
 }
 
 function getLockfileHash(environment: Environment): string {
-  const lockfilePath = lookupFile(environment.config.root, lockfilePaths)
+  const { config } = environment
+  const customLockFilePath = config.optimizeDeps.lockFilePath
+
+  let lockfilePath: string | undefined
+
+  if (customLockFilePath) {
+    // Use custom lockfile path if specified
+    const fullCustomPath = path.resolve(config.root, customLockFilePath)
+    lockfilePath = tryStatSync(fullCustomPath)?.isFile()
+      ? fullCustomPath
+      : undefined
+  } else {
+    // Use standard lockfile detection
+    lockfilePath = lookupFile(config.root, lockfilePaths)
+  }
+
   let content = lockfilePath ? fs.readFileSync(lockfilePath, 'utf-8') : ''
   if (lockfilePath) {
     const normalizedLockfilePath = lockfilePath.replaceAll('\\', '/')