diff --git a/packages/vite/src/node/plugins/worker.ts b/packages/vite/src/node/plugins/worker.ts
index 104c5862d3bd89..846c4bfc131d39 100644
--- a/packages/vite/src/node/plugins/worker.ts
+++ b/packages/vite/src/node/plugins/worker.ts
@@ -10,11 +10,6 @@ import type { TransformPluginContext } from 'rollup'
 
 const WorkerFileId = 'worker_file'
 
-export interface BundleWorkerEntryOutput {
-  code: string
-  sourcemap: Rollup.SourceMap | undefined
-}
-
 export async function bundleWorkerEntry(
   ctx: Rollup.TransformPluginContext,
   config: ResolvedConfig,
@@ -60,10 +55,6 @@ export async function bundleWorkerEntry(
   return emitSourcemapForWorkerEntry(ctx, config, id, query, chunk)
 }
 
-export interface EmitResult {
-  code: Buffer
-}
-
 function emitSourcemapForWorkerEntry(
   context: TransformPluginContext,
   config: ResolvedConfig,