Downgrading the JS Bugsnag client from 3.x to 2.x

bugsnag-2.md

Downgrading the JS Bugsnag client from 3.x to 2.x

Why?

It's smaller (as of 2019-01-05). The size of my application was reduced from 223KB to 194KB. After talking to Gary, he mentioned that James Smith had pointed him to the smaller legacy client, so I tried it out.

How?

To keep using Bugsnag@2, grab this:

http://d2wy8f7a9ursnm.cloudfront.net/bugsnag-2.js

You can see the README for this version on the latest 2.x tag on GitHub

Following these instructions, I just saved the old file to my project, imported it for the side effect (since it defined a window.Bugsnag global), and configured it:

import './vendor/bugsnag-small'

const startMonitoring = (userId) = {
  const client = window.Bugsnag.noConflict()
  client.apiKey = '1234567890'
  client.disableLog = true
  client.autoNotify = true
  client.notifyHandler = 'xhr'
  client.user = { id: userId }
  return client
}

And then where my app boots up, I just invoke startMonitoring(42) and I'm off to the races. In particular, I wasn't able to get it to report any exceptions unless I manually enabled autoNotify (which should default to true) and notifyHandler to 'xhr' (which defaults to adding a magic pixel to the DOM, IIRC).