File deletion with Fs not working

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2

I have a if to delete a file, however it is not being deleted and is not throwing errors.

Does anyone have any idea?

if (results[0].photo != `arquivos/imgpadrao.jpg`) {
  fs.unlink(`./public/${results[0].photo}`);
}
javascript node.js fs

2 answers

3


You are using an asynchronous method (fs.unlink), waiting for a callback for when it is solved. Thus, you should use a function of callback to see if there were any mistakes:

if (results[0].photo !== `arquivos/imgpadrao.jpg`) {
  fs.unlink(`./public/${results[0].photo}`, (err) => {
    if (err) {
      console.log('Houve algum erro!', err);
    } else {
      console.log('Tudo certo! Arquivo removido.');
    }
  });
}

You can also use the synchronous version of this method, fs.unlinkSync, performing the error procedure with a try/catch:

if (results[0].photo !== `arquivos/imgpadrao.jpg`) {
  try {
    fs.unlinkSync(`./public/${results[0].photo}`);
    console.log('Tudo certo!');
  } catch (err) {
    console.log('Houve algum erro!', err);
  }
}

2

Use the unlinkSync to exclude:

fs.unlinkSync(`./public/${results[0].photo}`);

Or use the Promise fs.unlink(`./public/${results[0].photo}`).then(res => {}).catch(err => {})

  • 2

    I think it is worth mentioning in the answer that the version that uses the promises is not exported directly by require('fs'), but yes require('fs').promises, and later versions of Node.

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