fsPromises.open(path, flags[, mode])

参见 open(2)

mode 设置文件模式(权限和粘滞位),但前提是文件已创建。

在 Windows 上预留了一些字符(< > : " / \ | ? *),如命名文件、路径和命名空间所记录。 在 NTFS 下,如果文件名包含冒号,则 Node.js 将打开文件系统流,如此 MSDN 页面所述。

Asynchronous file open that returns a Promise that, when resolved, yields a FileHandle object. See open(2).

mode sets the file mode (permission and sticky bits), but only if the file was created.

Some characters (< > : " / \ | ? *) are reserved under Windows as documented by Naming Files, Paths, and Namespaces. Under NTFS, if the filename contains a colon, Node.js will open a file system stream, as described by this MSDN page.