<commit_before>module.exports = function () {
  return function (err, req, res, next) {
    var errorString = JSON.stringify(err)

    res.setHeader('Content-Type', 'application/json')

    if (res.status) {
      res.status(err.statusCode).send(errorString)
    } else {
      res.send(err.statusCode, errorString)
    }
  }
}
<commit_msg>fix: explicitely pass isExpress to onError middleware<commit_after>module.exports = function (isExpress) {
  return function (err, req, res, next) {
    var errorString = JSON.stringify(err)

    res.setHeader('Content-Type', 'application/json')

    if (isExpress) {
      res.status(err.statusCode).send(errorString)
    } else {
      res.send(err.statusCode, errorString)
    }
  }
}

{'fraction_non_alphanumeric': 0.1346153846153846, 'fraction_numerical': 0.0, 'mean_word_length': 3.4451219512195124, 'pattern_counts': {'":': 0, '<': 3, '<?xml version=': 0, '>': 3, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
{'dir': 'git-commits-cleaned', 'id': '5739086', 'n_tokens_mistral': 238, 'n_tokens_neox': 233, 'n_words': 45}