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Sync Copy in fs-extra using NodeJS
Introduction to Sync copy
This method copies files or directories from one location to another location in a sync process. The directory can have sub-directories and files.
Syntax
copySync(src, dest[, options])
Parameters
src – This is a string paramter which will hold the source location of the file or directory that needs to be copies. If the location is a directory, it will copy everything inside of the directory instead of whole directory.
dest – This will hold the destination location where the files/directories will be copies. If src is a files, dest cannot be a directory.
Options
overwrite – If set to true, existing files or directories will be overwritten. Default value is set to true.
errorOnExist – It will throw an error if the destination file/folder exists only when overwrite is set to false.
preserveTimestamps – Latest modification and access time will be set to that of the original files if true, else it will be OS dependent.
filter – This option will filter copied files. Will include filtered files if set to true.
Since it is a sync copy, it will not have a callback.
Example 1
Check that fs-extra is installed before proceeding; if not, install fs-exra.
You can use the following command to check whether fs-extra is installed or not.
npm ls fs-extra
Create a syncCopyExample.js and copy-paste the following code snippet into that file.
Now, run the following command to run the following code snippet.
node syncCopyExample.js
Code Snippet −
const fs = require('fs-extra')
// copying file in sync process
fs.copySync('/tmp/myfile', '/tmp/mynewfile')
console.log("File copied in Sync")
// Copies directory from src to dest
fs.copySync('/tmp/mydir', '/tmp/mynewdir')
console.log("Directory copied in Sync")Output
C:\Users\tutorialsPoint\> node syncCopyExample.js File copied in Sync Directory copied in Sync
Example 2 (Using filter function)
const fs = require('fs-extra')
// Copying files with .txt or .avi as extension
fs.copySync(
'/tmp/newFile.txt', '/tmp/myfile2.txt', /.*(.txt|.avi)$/,
(err) => { console.log ('An error occured while copying')})
console.log("Successfully copied !")
C:\Users\tutorialsPoint\> node syncCopyExample.js
Successfully copied!
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