express-errors-to-slack

NodeJS ExpressJS middleware that Sends all your express errors/exceptions to Slack channel via Slack webhooks (which may be rate limited by slack server) or via Slack API

Installation

npm install express-errors-to-slack

Example usage with Slack API

Replace <SLACK_API_TOKEN> with API Token obtained from https://api.slack.com/tokens

'use strict';
 
const express = require('express');
const slackErrors = require('./index.js');
 
const app = express();
 
// Route that triggers a error
app.get('/error', function (req, res, next) {
    const err = new Error('Internal Server Error');
    err.status = 500;
    next(err)
});
 
// Send error reporting to Slack
app.use(slackErrors({ token: '<SLACK_API_TOKEN>', channel: '#logs_nodejs' }));
app.listen(3000);
 

Example usage with Slack Webhook

Replace <SLACK_WEBHOOK_URL> with your incoming webhook url obtained from https://api.slack.com/slack-apps

But remember slack servers limit rate if your logs exceed 1 message per second. API usage preffered

'use strict';
 
const express = require('express');
const slackErrors = require('./index.js');
 
const app = express();
 
// Route that triggers a error
app.get('/error', function (req, res, next) {
    const err = new Error('Internal Server Error');
    err.status = 500;
    next(err)
});
 
// Send error reporting to Slack
app.use(slackErrors({ webhookUri: '<SLACK_WEBHOOK_URL>', channel: '#logs_nodejs' }));
app.listen(3000);