HttpError

HTTP aware Error class HttpError for all your Node.js applications.

Purpose

The HttpError serves two purposes. First to attach a status code to error objects in one single operation, and second to encapsulate lower lever errors in application specific errors that can be presented to users without decoupling or loss of important technical details.

Install

$ npm install --save @starefossen/http-error

Usage

const HttpError = require('@starefossen/http-error');
const express = require('express');

const app = express();

app.get('/some/route', (req, res, next) => {
  db.get({…}, (err, data) => {
    if (err) { return next(new HttpError('Database Query Failed', 500, err)); }
    if (!data) { return next(new HttpError('Object Not Found', 404)); }

    // do work here
  });
});

app.use((req, res, next, httpError) => {
  // print system errors to stderr
  if (httpError.code > 500) {
    if (httpError.error) {
      console.error(httpError.error.message);
      console.error(httpError.error.stack);
    } else {
      console.error(httpError.message);
      console.error(httpError.stack);
    }
  }

  res.status(httpError.code);
  res.end();
});

MIT Licensed