docxtemplater/js/error-logger.js

docx and pptx generator working with templates and data (like Mustache, for Word and Powerpoint documents)

"use strict";

// The error thrown here contains additional information when logged with JSON.stringify (it contains a properties object containing all suberrors).
function replaceErrors(key, value) {
  if (value instanceof Error) {
    return Object.getOwnPropertyNames(value).reduce(function (error, key) {
      error[key] = value[key];
      return error;
    }, {});
  }

  return value;
}

function logger(error) {
  // eslint-disable-next-line no-console
  console.log(JSON.stringify({
    error: error
  }, replaceErrors));

  if (error.properties && error.properties.errors instanceof Array) {
    var errorMessages = error.properties.errors.map(function (error) {
      return error.properties.explanation;
    }).join("\n"); // eslint-disable-next-line no-console

    console.log("errorMessages", errorMessages); // errorMessages is a humanly readable message looking like this :
    // 'The tag beginning with "foobar" is unopened'
  }
}

module.exports = logger;