Extract data from error objects for serialization since Error instances are weirdly finicky and not straightforward to pull data from

extract-error-data.js

const builtInErrorTypes = [
	Error,
  EvalError,
  RangeError,
  ReferenceError,
  SyntaxError,
  TypeError,
  URIError,
];

// ES5
function extractErrorData(errorInstance) {
	// Extract standard fields
  const errorData = ['name', 'message', 'stack'].reduce(function(err, field) {
  	err[field] = errorInstance[field];
    return err;
  }, {});

	// Copy line and column numbers if present
  errorData.lineNumber = errorInstance.lineNumber || errorInstance.line || undefined;
  errorData.columnNumber = errorInstance.columnNumber || errorInstance.column || undefined;

	// Extract additional fields of custom Error subclasses
  if (builtInErrorTypes.every(function(errorType) { return Object.getPrototypeOf(errorInstance).constructor !== errorType; })) {
  	Object.getOwnPropertyNames(errorInstance).forEach(function(field) {
    	if (!(field in errorData)) {
	    	errorData[field] = errorInstance[field];
      }
    });
  }
  
  return errorData;
}

// ES6
const extractErrorData = errorInstance => {
  // Extract standard fields
  const errorData = ['name', 'message', 'stack'].reduce((err, field) => {
    err[field] = errorInstance[field];
    return err;
  }, {});

  // Copy line and column numbers if present
  errorData.lineNumber = errorInstance.lineNumber || errorInstance.line || undefined;
  errorData.columnNumber = errorInstance.columnNumber || errorInstance.column || undefined;

  // Extract additioinal fields of custom Error subclasses
  if (builtInErrorTypes.every(errorType => Object.getPrototypeOf(errorInstance).constructor !== errorType)) {
    Object.getOwnPropertyNames(errorInstance).forEach(field => {
      errorData[field] = errorInstance[field];
    })
  }
  
  return errorData;
}

console.log(extractErrorData(new RangeError('foo')))