first commit

source-code/ERP(B-ba)-廠商管理/src/utils/search.ts

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+/**
+ * 搜尋相關工具函式
+ */
+
+import type { Supplier } from "../types/vendor";
+
+/**
+ * 過濾廠商列表
+ * @param suppliers 廠商列表
+ * @param query 搜尋關鍵字
+ * @returns 過濾後的廠商列表
+ */
+export function filterSuppliers(suppliers: Supplier[], query: string): Supplier[] {
+  if (!query.trim()) {
+    return suppliers;
+  }
+
+  const lowerQuery = query.toLowerCase();
+  
+  return suppliers.filter(
+    (supplier) =>
+      supplier.name.toLowerCase().includes(lowerQuery) ||
+      supplier.contact?.toLowerCase().includes(lowerQuery) ||
+      supplier.email?.toLowerCase().includes(lowerQuery)
+  );
+}