Affected URL(s) <a href="https://nodejs.org/docs/latest/api/fs.htm

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From my test, fs.copyFile 's callback has a <code clas

In "fs.copyFile(src, dest[, mode], callback)" , for callback,'err' is not defined. about node HOT 5 OPEN

Vikranthraosb commented on June 27, 2024

In "fs.copyFile(src, dest[, mode], callback)" , for callback,'err' is not defined.

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Comments (5)

F3n67u commented on June 27, 2024 1

yes. it's not an doc-only issue.

If it's not an doc-only issue, could you please clarify what exactly the issue is?

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RedYetiDev commented on June 27, 2024

import { copyFile, constants } from 'node:fs';

function callback(err) {
  if (err) throw err;
  console.log('source.txt was copied to destination.txt');
}

// destination.txt will be created or overwritten by default.
copyFile('source.txt', 'destination.txt', callback);

// By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL, callback);

The documentation mentions an err argument in the callback demo code, but no where else in the docs, CC @nodejs/fs

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F3n67u commented on June 27, 2024

From my test, fs.copyFile's callback has a err param.

$ node test.mjs 
file:///test.mjs:4
  if (err) throw err;
           ^

[Error: ENOENT: no such file or directory, copyfile 'source.txt' -> 'destination.txt'] {
  errno: -2,
  code: 'ENOENT',
  syscall: 'copyfile',
  path: 'source.txt',
  dest: 'destination.txt'
}

Node.js v22.2.0


$ cat test.mjs                                                                
import { copyFile } from 'node:fs';

function callback(err) {
  if (err) throw err;
  console.log('source.txt was copied to destination.txt');
}

// destination.txt will be created or overwritten by default.
copyFile('source.txt', 'destination.txt', callback);

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RedYetiDev commented on June 27, 2024

I ran the same code and got the same result, this seems like a doc-only issue. @Vikranthraosb is that was you were referring to?

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Vikranthraosb commented on June 27, 2024

yes. it's not an doc-only issue.

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