express-errors-handler

    1.4.10 • Public • Published

    express-errors-handler Circle CI

    Some middleware for Express and Node that sets up Raven (or not as appropriate) depending on sensible environment variables.

    Installation

    npm install --save express-errors-handler

    Usage

    var express = require('express');
    var app = express();
    var eeh = require('express-errors-handler')
    var errorMiddleware = eeh.middleware;
     
    var promiseEnabledApi = require('./my-promise-enabled-api');
     
    // A typical route using Promises
    app.get('/a-typical-route', function(req, res, next) {
        promiseEnabledApi.getSomeThings()
            .then(function(someThings) {
                res.render(someThings);
            })
     
            // Make sure to end all Promise chains with a `catch`
            // that passes the error to the next middleware
            .catch(next);
    });
     
    // A typical route with an upstream dependency
    app.get('/a-typical-route', function(req, res, next) {
        fetch('http://a.url.i-like')
            .then(function(someThings) {
                res.render(someThings);
            })
            // chosse what status to send when an upstream service errors
            .catch(eeh.upstreamErrorHandler(404))
     
            // Make sure to end all Promise chains with a `catch`
            // that passes the error to the next middleware
            .catch(next);
    });
     
     
    // Make sure the middleware is added after your routes otherwise you'll lose the errors
    app.use(errorMiddleware);

    Supported environment variables

    • NODE_ENV - mode to operate in, can be either PRODUCTION (sends bugs to aggregator) or any another value (shows bugs to user)
    • RAVEN_URL - URL to report bugs captured in production
    • SPLUNK_URL - URL to send non critical or upstream bugs too

    License

    This software is published by the Financial Times under the MIT license.

    Keywords

    none

    Install

    npm i express-errors-handler

    DownloadsWeekly Downloads

    72

    Version

    1.4.10

    License

    MIT

    Last publish

    Collaborators

    • financial-times
    • ftlabs
    • kornel
    • mattandrews