copyFileAsync
external fun copyFileAsync(src: PathLike, dest: PathLike, mode: Number = definedExternally): Promise<Void>(source)
Asynchronously copies src
to dest
. By default, dest
is overwritten if it already exists.
No guarantees are made about the atomicity of the copy operation. If an error occurs after the destination file has been opened for writing, an attempt will be made to remove the destination.
import { copyFile, constants } from 'node:fs/promises';
try {
await copyFile('source.txt', 'destination.txt');
console.log('source.txt was copied to destination.txt');
} catch {
console.error('The file could not be copied');
}
// By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
try {
await copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL);
console.log('source.txt was copied to destination.txt');
} catch {
console.error('The file could not be copied');
}
Content copied to clipboard
Since
v10.0.0
Return
Fulfills with undefined
upon success.
Parameters
src
source filename to copy
dest
destination filename of the copy operation
mode=0 Optional modifiers that specify the behavior of the copy operation. It is possible to create a mask consisting of the bitwise OR of two or more values (e.g. fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE
)