dirent类型 抽象文件类型

适用范围:

1. 判断一个抽象文件是目录还是文件
2. 判断文件系统的类型

以下为方法注释:

export class Dirent {
	/**
	 * Returns `true` if the `fs.Dirent` object describes a regular file.
	 * @since v10.10.0
	 */
	isFile(): boolean;
	/**
	 * Returns `true` if the `fs.Dirent` object describes a file system
	 * directory.
	 * @since v10.10.0
	 */
	isDirectory(): boolean;
	/**
	 * Returns `true` if the `fs.Dirent` object describes a block device.
	 * @since v10.10.0
	 */
	isBlockDevice(): boolean;
	/**
	 * Returns `true` if the `fs.Dirent` object describes a character device.
	 * @since v10.10.0
	 */
	isCharacterDevice(): boolean;
	/**
	 * Returns `true` if the `fs.Dirent` object describes a symbolic link.
	 * @since v10.10.0
	 */
	isSymbolicLink(): boolean;
	/**
	 * Returns `true` if the `fs.Dirent` object describes a first-in-first-out
	 * (FIFO) pipe.
	 * @since v10.10.0
	 */
	isFIFO(): boolean;
	/**
	 * Returns `true` if the `fs.Dirent` object describes a socket.
	 * @since v10.10.0
	 */
	isSocket(): boolean;
	/**
	 * The file name that this `fs.Dirent` object refers to. The type of this
	 * value is determined by the `options.encoding` passed to {@link readdir} or {@link readdirSync}.
	 * @since v10.10.0
	 */
	name: string;
}