From 6c6f4cbd8381a49671d0b1f093819d77a0db3be5 Mon Sep 17 00:00:00 2001
From: Xiawei <xiaweiss@foxmail.com>
Date: Fri, 26 Sep 2025 14:55:27 +0800
Subject: [PATCH] fix: syncMode - `default`: use `append` strategy when using
 dev server, `overwrite` strategy when using build.

---
 src/core/context.ts | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/core/context.ts b/src/core/context.ts
index 3cc91bbf..a4cdb098 100644
--- a/src/core/context.ts
+++ b/src/core/context.ts
@@ -43,7 +43,7 @@ export class Context {
     this.options = resolveOptions(rawOptions, this.root)
     this.sourcemap = rawOptions.sourcemap ?? true
     this.generateDeclaration = throttle(500, this._generateDeclaration.bind(this), { noLeading: false })
-    this._removeUnused = this.options.syncMode === 'overwrite'
+    this._removeUnused = this.options.syncMode !== 'append'
 
     if (this.options.dumpComponentsInfo) {
       const dumpComponentsInfo = this.options.dumpComponentsInfo === true
@@ -80,13 +80,13 @@ export class Context {
       return
 
     this._server = server
-    this._removeUnused = this.options.syncMode !== 'append'
+    this._removeUnused = this.options.syncMode === 'overwrite'
     this.setupWatcher(server.watcher)
   }
 
   setupWatcher(watcher: fs.FSWatcher) {
     const { globs } = this.options
-
+    this._removeUnused = this.options.syncMode === 'overwrite'
     watcher
       .on('unlink', (path) => {
         if (!matchGlobs(path, globs))
@@ -112,7 +112,7 @@ export class Context {
    */
   setupWatcherWebpack(watcher: fs.FSWatcher, emitUpdate: (path: string, type: 'unlink' | 'add') => void) {
     const { globs } = this.options
-
+    this._removeUnused = this.options.syncMode === 'overwrite'
     watcher
       .on('unlink', (path) => {
         if (!matchGlobs(path, globs))