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platform/scripts/clean-dist.mjs

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+/**
+ * 构建前删除 dist，带重试。缓解 Windows 上 Vite emptyDir 的 EPERM（文件被资源管理器预览、杀毒、vite preview 等占用）。
+ */
+import fs from "fs";
+import path from "path";
+import { fileURLToPath } from "url";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const root = path.resolve(__dirname, "..");
+const dirs = [path.join(root, "dist"), path.join(root, "output")];
+
+const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
+
+async function rmDirWithRetry(dir) {
+  for (let i = 0; i < 10; i++) {
+    if (!fs.existsSync(dir)) {
+      return true;
+    }
+    try {
+      fs.rmSync(dir, { recursive: true, force: true });
+      return true;
+    } catch (e) {
+      const code = e && typeof e === "object" && "code" in e ? e.code : "";
+      const retryable = code === "EPERM" || code === "EBUSY" || code === "ENOTEMPTY";
+      if (!retryable || i === 9) {
+        console.error(`[clean-dist] 无法删除 ${path.relative(root, dir) || dir}:`, e instanceof Error ? e.message : e);
+        return false;
+      }
+      await sleep(350 * (i + 1));
+    }
+  }
+  return false;
+}
+
+async function main() {
+  let ok = true;
+  for (const dir of dirs) {
+    const r = await rmDirWithRetry(dir);
+    if (!r) ok = false;
+  }
+  if (!ok) {
+    console.error(
+      "请关闭占用上述目录的程序：资源管理器预览、vite preview、IDE、杀毒实时扫描等后执行 npm run clean。"
+    );
+    process.exit(1);
+  }
+}
+
+await main();