# undefined FileSystemManager.closeSync(Object object)

Start from base library version 2.16.1. Please remaining backward compatible.

with Promise style call: Not supported

Mini Program plugin: Support, need to Mini Program base library version no less than 2.19.2

Synchronize Close Files

# parameter

# Object object

attribute type Default values Required Introductions
fd string yes File descriptor that needs to be closed. fd adopt FileSystemManager.open or FileSystemManager.openSync Interface acquisition

# Return value

# undefined

# error

Error code Error message Introductions
bad file descriptor Invalid file descriptor

# sample code

const fs = wx.getFileSystemManager()
const fd = fs.openSync({
  filePath: `${wx.env.USER_DATA_PATH}/hello.txt`, 
  flag: 'a+'

// Close file
fs.closeSync({fd: fd})