About Deno 1.34 API changes - Deno.FileInfo

Deno 1.34 was released in May 26, 2023

deno.com

I implemented Deno API changes - Deno.FileInfo

https://deno.com/blog/v1.34#denofileinfo

The Deno.FileInfo interface now includes the following new fields:

• Deno.FileInfo.isBlockDevice
• Deno.FileInfo.isCharDevice
• Deno.FileInfo.isFifo
• Deno.FileInfo.isSocket

The fields are available on Linux and macOS. On Windows, they are always null.

Thank you to Hirotaka Tagawa for the contribution.

PR is #19008
github.com

Versions prior to 1.34 don't have isBlockDevice, isCharDevice, isFifo, isSocket information in FileInfo

Example =>

$ touch file_test

$ deno --version
deno 1.33.2 (release, aarch64-apple-darwin)
v8 11.4.183.1
typescript 5.0.3

> Deno.statSync('/Users/wafuwafu13/desktop/file_test')
{
  isFile: true,
  isDirectory: false,
  isSymlink: false,
  size: 0,
  mtime: 2023-05-25T20:38:52.075Z,
  atime: 2023-05-25T20:38:52.075Z,
  birthtime: 2023-05-25T20:38:52.075Z,
  dev: 16777232,
  ino: 56604379,
  mode: 33188,
  nlink: 1,
  uid: 501,
  gid: 20,
  rdev: 0,
  blksize: 4096,
  blocks: 0
}

In version 1.34 have isBlockDevice, isCharDevice, isFifo, isSocket information in FileInfo

Example =>

$ deno --version
deno 1.34.0 (release, aarch64-apple-darwin)
v8 11.5.150.1
typescript 5.0.4

> Deno.statSync('/Users/wafuwafu13/desktop/file_test')
{
  isFile: true,
  isDirectory: false,
  isSymlink: false,
  size: 0,
  mtime: 2023-05-25T20:38:52.075Z,
  atime: 2023-05-25T20:38:52.075Z,
  birthtime: 2023-05-25T20:38:52.075Z,
  dev: 16777232,
  ino: 56604379,
  mode: 33188,
  nlink: 1,
  uid: 501,
  gid: 20,
  rdev: 0,
  blksize: 4096,
  blocks: 0,
  isBlockDevice: false,
  isCharDevice: false,
  isFifo: false,
  isSocket: false
}

Example of isBlockDevice: true =>

> Deno.statSync('/dev/disk0')
{
  isFile: false,
  isDirectory: false,
  isSymlink: false,
  size: 0,
  mtime: 2023-05-24T20:27:08.000Z,
  atime: 2023-05-24T20:27:08.000Z,
  birthtime: 1970-01-01T00:00:00.000Z,
  dev: 89290492,
  ino: 623,
  mode: 24992,
  nlink: 1,
  uid: 0,
  gid: 5,
  rdev: 16777216,
  blksize: 2048,
  blocks: 0,
  isBlockDevice: true,
  isCharDevice: false,
  isFifo: false,
  isSocket: false
}

Example of isCharDevice: true =>

> Deno.statSync('/dev/tty')
{
  isFile: false,
  isDirectory: false,
  isSymlink: false,
  size: 0,
  mtime: 2023-05-24T20:27:08.000Z,
  atime: 2023-05-24T20:27:08.000Z,
  birthtime: 1970-01-01T00:00:00.000Z,
  dev: 89290492,
  ino: 334,
  mode: 8630,
  nlink: 1,
  uid: 0,
  gid: 0,
  rdev: 33554432,
  blksize: 65536,
  blocks: 0,
  isBlockDevice: false,
  isCharDevice: true,
  isFifo: false,
  isSocket: false
}

Example of isFifo: true =>

$ mkfifo fifo_test

> Deno.statSync('/Users/wafuwafu13/desktop/fifo_test')
{
  isFile: false,
  isDirectory: false,
  isSymlink: false,
  size: 0,
  mtime: 2023-05-25T20:37:24.714Z,
  atime: 2023-05-25T20:37:24.714Z,
  birthtime: 2023-05-25T20:37:24.714Z,
  dev: 16777232,
  ino: 56604333,
  mode: 4516,
  nlink: 1,
  uid: 501,
  gid: 20,
  rdev: 0,
  blksize: 4096,
  blocks: 0,
  isBlockDevice: false,
  isCharDevice: false,
  isFifo: true,
  isSocket: false
}

Example of isSocket: true =>

> Deno.statSync('/var/run/filesystemui.socket')
{
  isFile: false,
  isDirectory: false,
  isSymlink: false,
  size: 0,
  mtime: 2023-05-24T20:27:25.710Z,
  atime: 2023-05-24T20:27:25.710Z,
  birthtime: 2023-05-24T20:27:25.710Z,
  dev: 16777232,
  ino: 56514866,
  mode: 49572,
  nlink: 1,
  uid: 501,
  gid: 0,
  rdev: 0,
  blksize: 4096,
  blocks: 0,
  isBlockDevice: false,
  isCharDevice: false,
  isFifo: false,
  isSocket: true
}

🦕