feat(dev): support keepNames option for optimizeDependencies config (#…

…2742)

docs/config/index.md

@@ -569,6 +569,15 @@ export default ({ command, mode }) => {
 
   By default, linked packages not inside `node_modules` are not pre-bundled. Use this option to force a linked package to be pre-bundled.
 
+### optimizeDeps.keepNames
+
+- **Type:** `boolean`
+- **Default:** `false`
+
+  The bundler sometimes needs to rename symbols to avoid collisions.
+  Set this to `true` to keep the `name` property on functions and classes.
+  See [`keepNames`](https://esbuild.github.io/api/#keep-names).
+
 ## SSR Options
 
 :::warning Experimental

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

@@ -46,6 +46,12 @@ export interface DepOptimizationOptions {
    * cannot be globs).
    */
   exclude?: string[]
+  /**
+   * The bundler sometimes needs to rename symbols to avoid collisions.
+   * Set this to `true` to keep the `name` property on functions and classes.
+   * https://esbuild.github.io/api/#keep-names
+   */
+  keepNames?: boolean
 }
 
 export interface DepOptimizationMetadata {
@@ -229,7 +235,7 @@ export async function optimizeDeps(
   const result = await build({
     entryPoints: Object.keys(flatIdDeps),
     bundle: true,
-    keepNames: true,
+    keepNames: config.optimizeDeps?.keepNames,
     format: 'esm',
     external: config.optimizeDeps?.exclude,
     logLevel: 'error',