September 30, 2022

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The Ember Times – Issue No. 108

3 min read


πŸ€™ Emberistas! 🐹

This week: learn how to use Sentry to track production errors πŸ“ˆ, get your new hires off to the best start πŸ“š, learn about the newest – and hopefully last! – way to handle events in Ember with the {on}} Modifier πŸ”›, a cheat sheet for modern Ember components ✨, and last, but not least, find out how to create static sites with Prember and Ember Data πŸ”₯!


Sentry is an open-source error tracking tool that helps you monitor and fix production errors in your Ember app. In 2018, Sentry announced a new SDK for browsers, called @sentry/browser.

To help you get started, @ Turbo87 published a blog post. 🧑 In particular, you can learn how to:

  • migrate from ember-cli-sentry addon to the official @sentry/browser
  • report messages and exceptions to Sentry at will
  • filter out errors that aren’t critical
  • add metadata to errors

We encourage you to deliver high-quality Ember apps today!


@jenweber wrote an awesome blog post on how to hire and train new developers. She provided 10 great tips on how you can help solve the pain points of hiring and training for your company. If you are in charge of hiring new people or if you have a new colleague in your team, this is definitely a nice piece to get some new ideas about your onboarding process.

If you have started a new job, this post is also for you! We encourage you to think about how you want to be trained and how you can contribute to your team’s onboarding process.


The action modifier is the original way events were handled in Ember. The new {{on}} modifier that was introduced this year to address some shortcomings of the modifier action such as being explicit, working consistently for all events, and works well in SSR.

One way the {{on}} modifier deviates from the helper action is that it will only be responsible for adding (and removing) event listeners using the addEventListener API. The helper action is still needed to bind context, see below.

<button {{on 'click' (action 'addOne')}}>
  Add one!
</button>

Check out this free tutorial video on the {{on}} modify on EmberMap!


On the road to the release of Ember Octane, lots of modern component features are already available with recent Ember releases. If you want to keep track of which features are already available with a particular 3.x version of Ember, check out the ultimate Ember Component Cheat Sheet.

Also if you want to learn more about how these new component API’s work, be sure to check out the Ember Component Museum by @jenweber. ✨

Kudos to @CodingItWrong who created the cheat sheet and thank you for sharing it with the community!


Prember is an addon that works in tandem with Fastboot. It allows you to serve your app statically and reap the benefits of fast first-paint and SEO!

@ Gaurav0 recently published his notes on using Prember with Ember Data. You will find how to set up Prember and Fastboot shoebox, as well as some data challenges that you may encounter along the way. See how Prember can help you today!


This week we’d like to thank @sdhull, @josemarluedke, @bantic, @amyrlam, @ sivakumar-kailasam, @mansona, @toddjordan, @pzuraq, @runspired, @rwjblue and @ Gaurav0 for their contributions to Ember and related repositories !! πŸ’–


Office Hours Tomster Mascot

Wondering about something related to Ember, Ember Data, Glimmer, or addons in the Ember ecosystem, but don’t know where to ask? Readers’ Questions are just for you!

Submit your own short and sweet question under bit.ly/ask-ember-core. And don’t worry, there are no silly questions, we appreciate them all – promise! 🀞


Want to write for the Ember Times? Have a suggestion for next week’s issue? Join us at # support-ember-times on the Ember Community Discord or ping us @embertimes on Twitter.

Keep on top of what’s been going on in Emberland this week by subscribing to our email newsletter! You can also find our posts on the Ember blog.


That’s another wrap! ✨

Be kind,

Anne-Greeth van Herwijnen, Chris Ng, Isaac Lee, Jessica Jordan, Amy Lam and the Learning Team





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