全新出发

electron/services/export/utils/parallelLimit.ts

@@ -0,0 +1,31 @@
+/**
+ * 并发控制：限制同时执行的 Promise 数量
+ */
+export async function parallelLimit<T, R>(
+  items: T[],
+  limit: number,
+  fn: (item: T, index: number) => Promise<R>
+): Promise<R[]> {
+  const results: R[] = new Array(items.length)
+  let currentIndex = 0
+  let hasError = false
+  let globalError: any = null
+
+  const worker = async () => {
+    while (currentIndex < items.length && !hasError) {
+      const index = currentIndex++
+      try {
+        results[index] = await fn(items[index], index)
+      } catch (err) {
+        hasError = true
+        globalError = err
+      }
+    }
+  }
+
+  const workers = Array.from({ length: Math.min(limit, items.length) }, () => worker())
+  await Promise.all(workers)
+
+  if (hasError) throw globalError
+  return results
+}