Usage:

const errors = require('extended-rest-errors');
errors.init({
  packageName:'MyApp'
  version:'0.1.0'
})// optional
throw new errors.BadRequestError();
throw new errors.BadRequestError({message:'Invalid Request'},previousError);

//Get 400 error by status code
throw new (errors.status(400))();

Error Format :

{ 
  errorResponse: {
    'packageName': process.env.NODE_PACKAGE_NAME || 'unknown',
     version': process.env.NODE_PACKAGE_VERSION || 'unknown',
    'category': '',//TBD
    'path': '',//TBD
    'causedBy': causedBy || {},
    'code': httpStatusCodes[key].code,
    'exception': key,
    'message': httpStatusCodes[key].message,
    'source': process.env.NODE_ENV === 'production' ? '' : this.stack,
    'status': 'Internal server error',
    'timestamp': Date.now().toString(),
    'validationErrors': []
  }
}

Supported Errors:

400:BadRequestError
401:UnauthorizedError
403:ForbiddenError
404:NotFoundError
405:MethodNotAllowedError
406:NotAcceptableError
407:ProxyAuthenticationRequiredError
408:RequestTimeoutError
409:ConflictError
410:GoneError
411:LengthRequiredError
412:PreconditionFailedError
413:RequestEntityTooLargeError
414:RequesturiTooLargeError
415:UnsupportedMediaTypeError
416:RangeNotSatisfiableError
417:ExpectationFailedError
418:ImATeapotError
422:UnprocessableEntityError
423:LockedError
424:FailedDependencyError
425:UnorderedCollectionError
426:UpgradeRequiredError
428:PreconditionRequiredError
429:TooManyRequestsError
431:RequestHeaderFieldsTooLargeError
500:InternalServerError
501:NotImplementedError
502:BadGatewayError
503:ServiceUnavailableError
504:GatewayTimeoutError
505:HttpVersionNotSupportedError
511:NetworkAuthenticationRequiredError