Function cloneFlatFileMap

app/types/transfer.ts:219–228

(fileMap: FlatFileMap)

 * 浅拷贝文件树，保留 File 引用，复制数组结构，避免在发送前污染原始状态。
 */
export function cloneFlatFileMap(fileMap: FlatFileMap): FlatFileMap {
  const result: FlatFileMap = {}
  for (const [key, value] of Object.entries(fileMap)) {
    result[key] = {
      ...value,
      paths: [...value.paths]
    }
  }
  return result
}