ember-learn · amyrlam · Jan 16, 2021 · Dec 21, 2020 · Jan 3, 2021 · Jan 3, 2021
diff --git a/content/the-ember-times-issue-171.md b/content/the-ember-times-issue-171.md
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+---
+title: The Ember Times - Issue No. 171
+authors:
+  - chris-ng
+  - jen-weber
+  - amy-lam
+  - isaac-lee
+  - jared-galanis
+date: 2021-01-15T00:00:00.000Z
+tags:
+  - newsletter
+  - '2021'
+---
+
+👋 Emberistas! 🐹
+
+Speakers wanted for EmberConf 2021 📆,
+Ember 3.24 Release 🐹,
+read the blog on understanding args in Glimmer components ✍️,
+announcing the launch of the redesigned Ember Blog 🐹,
+five RFCs for Ember 4.0 Milestone 💬,
+and last, but not least,
+micro-frontends with Glimmer.js and single-spa 🔥!
+
+---
+
+## [Speakers wanted for EmberConf 2021 📆](https://emberconf.com/)
+
+This year's [EmberConf](https://emberconf.com/) has been announced to take place March 29-30, 2021! EmberConf is 2 days of Ember talks, sessions and fun — streaming live virtually anywhere. Want to give a talk at EmberConf? We're now accepting proposals.
+
+EmberConf is great because our speakers are great, and you could be one of them. The Call for Papers (CFP) is public, starts out blind, and features a collaborative process to help applicants improve their proposals. Proposals will be accepted through **January 31st at 11:59pm PT**. Learn more at the [EmberConf 2021 CFP site](https://cfp.emberconf.com/events/emberconf-2021).
+
+There are a lot of options for talks this year. Conference talks can be 30, 15, 10, or 5 minutes total. Have a talk idea? The EmberConf team will be voting on and reviewing talks on a rolling basis, and will attempt to send feedback sooner than their final evaluation. **The earlier you submit, the more chance you'll have to tweak your pitch and improve your odds.** Sounds like a good plan for this weekend then?! 📝
+
+---
+
+## [Ember 3.24 release 🐹](https://blog.emberjs.com/ember-3-24-released/)
+
+Version 3.24  of Ember.js, Ember Data, and Ember CLI was released on January 7, 2021! Please use the [ember-try](https://github.com/ember-cli/ember-try) addon to continuously test your projects against the latest Ember releases.
+
+Ember.js 3.24 included [blueprint changes](https://github.com/emberjs/ember.js/pull/19224) when [ember-page-title](https://github.com/ember-cli/ember-page-title) is installed, interface changes to `DeprecationOptions` requiring the keys `for` and `since` when using `deprecate()`, and updated the Glimmer VM to version 0.65.0.
+
+The function `tryInvoke` from `@ember/utils` module has been deprecated in favor of JavaScript's optional chaining `?.` There have also been various deprecations for `Ember.String` methods including the `Ember.String.loc` function. Please check the [Deprecations guide](https://deprecations.emberjs.com/v3.x/) for the full information.
+
+Ember Data 3.24 included a fix where an attempt to set something on a deleted record no longer shows the value in the error message in a production environment. This was [done](https://github.com/emberjs/data/pull/7370) to prevent leaking sensitive data.
+
+Ember CLI 3.24 upgraded the packages that are present in the package.json blueprint to their latest version which included a major version changes for [ember-qunit to v5](https://github.com/emberjs/ember-qunit/releases/tag/v5.0.0) and [eslint-plugin-ember to v10](https://github.com/ember-cli/eslint-plugin-ember/releases/tag/v10.0.0). The addon [ember-page-title](https://github.com/ember-cli/ember-page-title) was also added to the blueprint. Finally prettier (along with eslint-config-prettier and eslint-plugin-prettier) was also added to the blueprint from [RFC #628](https://github.com/emberjs/rfcs/blob/master/text/0628-prettier.md).
+
+Read the full [Ember 3.24 release notes](https://blog.emberjs.com/ember-3-24-released/) for the complete information.
+
+---
+
+## [Blog: Understanding args in Glimmer components ✍️](https://v5.chriskrycho.com/journal/understanding-args-in-glimmer-components/)
+
+[Chris Krycho (@chriskrycho)](https://github.com/chriskrycho) wrote a blog post on [understanding `args` in Glimmer components](https://v5.chriskrycho.com/journal/understanding-args-in-glimmer-components/) with a focus on what happens when there are _updates_ to `args`.
+
+Chris explains how a Glimmer component works if you strip away all the reactivity and only do a single pass. The [Glimmer component API](https://api.emberjs.com/ember/3.23/modules/@glimmer%2Fcomponent) sets the `args` object on to the class in the `constructor`. The `args` object in a Glimmer component is also **read-only** since it is a [private class field](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes/Private_class_fields) while exposed with a getter.
+
+```javascript
+class Component {
+  #args: object;
+  get args() {
+    return this.#args;
+  }
+
+  constructor(args: object) {
+    this.#args = args;
+  }
+}
+```
+
+The blog recommends to never assign from a property on `args` to a local class field in a Glimmer component because changes to the parent will never be reflected in the component. You should instead use getters that are re-computed when invoked.
+
+Read the full blog post on [Chris’s blog](https://v5.chriskrycho.com/journal/understanding-args-in-glimmer-components/).
+
+---
+
+## [Announcing the launch of the redesigned Ember Blog 🐹](https://blog.emberjs.com)
+
+<!--alex ignore king-queen-->
+[The Ember Blog](https://blog.emberjs.com/) has a new look and a new codebase!
+The Ember Blog was started 8 years ago, in 2012. For many years, it was a custom Ruby app
+that was mainly used for release blog posts.
+Today, the blog is the home for The Ember Times,
+release announcements, guest-written learning articles, and more,
+so a group of dedicated contributors set out to make some improvements.
+The blog is now an Ember app, and under the hood, it uses the same tech
+that powers the Ember Guides, [Empress](https://github.com/empress).
+Empress tools help turn markdown into HTML within an Ember app,
+meaning that articles are quick to write using Markdown, and contributors
+can use all the great tools that Ember has to offer.
+
+Please check out [the blog](https://blog.emberjs.com/) today! Many thanks to the contributors who worked on this project! 👏
+
+<!--alex ignore king-queen-->
+Did you spot any issues? Want to help build future features?
+You can find the main repository at
+[ember-learn/ember-blog](https://github.com/ember-learn/ember-blog) on GitHub.
+Most styles and components come from the shared component library that all Ember's public sites use,
+[ember-styleguide](https://github.com/ember-learn/ember-styleguide).
+The [empress-blog-ember-template](https://github.com/ember-learn/empress-blog-ember-template)
+has a lot of the layout logic that is specific to this blog,
+and [empress-blog](https://github.com/empress/empress-blog) handles the general application code for routing and data requests for blogs in general.
+
+<!--alex ignore king-queen-->
+If you like what you see, you can [make your own blog using Empress](https://github.com/empress/empress-blog#super-quick-start) in about 10 minutes!
+
+---
+
+## [Five RFCs for Ember 4.0 Milestone 💬](https://github.com/emberjs/rfcs/milestone/1)
+
+The Ember Core Team has been working hard on paving way for [Ember 4.0 release](https://github.com/emberjs/rfcs/milestone/1). This week on January 16th, four RFCs were merged, and [five RFCs entered the Final Comment Period](https://twitter.com/emberjs/status/1350282638670639105).
+
+Currently, a total of 5 RFCs are open under the 4.0 milestone:
+
+- [Deprecate `{{hasBlock}}` and `{{hasBlockParams}}` in Templates](https://github.com/emberjs/rfcs/pull/689)
+- [Deprecate Octane Optional Features](https://github.com/emberjs/rfcs/pull/704)
+- [Deprecate jQuery Integration Optional Feature](https://github.com/emberjs/rfcs/pull/705)
+- [Deprecate the Ember Global](https://github.com/emberjs/rfcs/pull/706)
+- [Modernize Built-In Components (Part 2)](https://github.com/emberjs/rfcs/pull/707)
+
+Have a look at the outstanding RFCs when you find time. Please feel free to share the links with other developers and participate in the RFCs by providing feedback! 🌟
+
+---
+
+## [Micro-frontends with Glimmer.js and single-spa](https://dev.to/rajasegar/micro-frontends-with-glimmer-js-and-single-spa-42aa)
+
+There is another great new Glimmer-focused [blog post](https://dev.to/rajasegar/micro-frontends-with-glimmer-js-and-single-spa-42aa) from [Rajasegar Chandran (@rajasegar)](https://github.com/rajasegar) about how to make Micro-Frontends with 🔥🔥🔥Glimmer.js and single-spa🔥🔥🔥!
+
+If you haven't been following along, Rajasegar has published a number of fantastic [posts on dev.to](https://dev.to/rajasegar), many of which involve Glimmer.js.
+
+This new post looks at using the [single-spa library](https://single-spa.js.org/) to buld micro-frontends with Glimmer.
+
+Single-spa is a JavaScript router for front-end microservices that lets you use multiple frameworks in a single-page application. For the integration with Glimmer, Rajasegar has published a [single-spa plugin](https://github.com/rajasegar/single-spa-glimmer) that facilitates injecting multiple super-fast Glimmer apps into a single page, something which is not otherwise possible.
+
+This setup is all pretty experimental and cutting-edge, but it does demonstrate the flexibility of Glimmer, and what you can do with it if you have very specific use cases.
+
+Check this great post out and look for more great Glimmer content from Rajasegar in the future!
+
+---
+
+## [Contributors' corner 👏](https://guides.emberjs.com/release/contributing/repositories/)
+
+<p>This week we'd like to thank <a href="https://github.com/MelSumner" rel="noopener noreferrer" target="_blank">Melanie Sumner (@MelSumner)</a>, <a href="https://github.com/chadhietala" rel="noopener noreferrer" target="_blank">Chad Hietala (@chadhietala)</a>, <a href="https://github.com/chiragpat" rel="noopener noreferrer" target="_blank">Chirag Patel (@chiragpat)</a>, <a href="https://github.com/chrisrng" rel="noopener noreferrer" target="_blank">Chris Ng (@chrisrng)</a>, <a href="https://github.com/snewcomer" rel="noopener noreferrer" target="_blank">Scott Newcomer (@snewcomer)</a>, <a href="https://github.com/fozy81" rel="noopener noreferrer" target="_blank">Tim (@fozy81)</a>, <a href="https://github.com/dwickern" rel="noopener noreferrer" target="_blank">Derek Wickern (@dwickern)</a>, <a href="https://github.com/ijlee2" rel="noopener noreferrer" target="_blank">Isaac Lee (@ijlee2)</a>, <a href="https://github.com/knownasilya" rel="noopener noreferrer" target="_blank">Ilya Radchenko (@knownasilya)</a>, <a href="https://github.com/kategengler" rel="noopener noreferrer" target="_blank">Katie Gengler (@kategengler)</a>, <a href="https://github.com/bmish" rel="noopener noreferrer" target="_blank">Bryan Mishkin (@bmish)</a>, <a href="https://github.com/jenweber" rel="noopener noreferrer" target="_blank">Jen Weber (@jenweber)</a>, <a href="https://github.com/jeffdaley" rel="noopener noreferrer" target="_blank">Jeff Daley (@jeffdaley)</a>, <a href="https://github.com/jaredgalanis" rel="noopener noreferrer" target="_blank">Jared Galanis (@jaredgalanis)</a>, <a href="https://github.com/jderr-mx" rel="noopener noreferrer" target="_blank">John Derr (@jderr-mx)</a>, <a href="https://github.com/locks" rel="noopener noreferrer" target="_blank">Ricardo Mendes (@locks)</a>, <a href="https://github.com/dcyriller" rel="noopener noreferrer" target="_blank">Cyrille David (@dcyriller)</a>, <a href="https://github.com/rwjblue" rel="noopener noreferrer" target="_blank">Robert Jackson (@rwjblue)</a>, <a href="https://github.com/czikarito" rel="noopener noreferrer" target="_blank">Pawel Kuwik (@czikarito)</a>, <a href="https://github.com/nickschot" rel="noopener noreferrer" target="_blank">Nick Schot (@nickschot)</a>, <a href="https://github.com/Alonski" rel="noopener noreferrer" target="_blank">Alon Bukai (@Alonski)</a>, <a href="https://github.com/pzuraq" rel="noopener noreferrer" target="_blank">Chris Garrett (@pzuraq)</a>, <a href="https://github.com/sandstrom" rel="noopener noreferrer" target="_blank">@sandstrom</a>, <a href="https://github.com/rwwagner90" rel="noopener noreferrer" target="_blank">Robert Wagner (@rwwagner90)</a>, <a href="https://github.com/kennethlarsen" rel="noopener noreferrer" target="_blank">Kenneth Larsen (@kennethlarsen)</a>, <a href="https://github.com/chancancode" rel="noopener noreferrer" target="_blank">Godfrey Chan (@chancancode)</a>, <a href="https://github.com/genisd" rel="noopener noreferrer" target="_blank">Daniel (@genisd)</a>, <a href="https://github.com/xg-wang" rel="noopener noreferrer" target="_blank">Thomas Wang (@xg-wang)</a>, <a href="https://github.com/amyrlam" rel="noopener noreferrer" target="_blank">Amy Lam (@amyrlam)</a>, <a href="https://github.com/NullVoxPopuli" rel="noopener noreferrer" target="_blank">@NullVoxPopuli</a>, <a href="https://github.com/jherdman" rel="noopener noreferrer" target="_blank">James Herdman (@jherdman)</a>, and <a href="https://github.com/bertdeblock" rel="noopener noreferrer" target="_blank">Bert De Block (@bertdeblock)</a> for their contributions to Ember and related repositories! 💖</p>
+
+---
+
+## [Connect with us 🤓](https://docs.google.com/forms/d/e/1FAIpQLScqu7Lw_9cIkRtAiXKitgkAo4xX_pV1pdCfMJgIr6Py1V-9Og/viewform)
+
+<div class="blog-row">
+  <img class="float-right small transparent padded" alt="Office Hours Tomster Mascot" title="Readers' Questions" src="/images/tomsters/officehours.png" />
+
+  <p>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!</p>
+
+  <p><strong>Submit your own</strong> short and sweet <strong>question</strong> under <a href="https://bit.ly/ask-ember-core" target="rq">bit.ly/ask-ember-core</a>. And don’t worry, there are no silly questions, we appreciate them all - promise! 🤞</p>
+
+  <p>Want to write for the Ember Times? Have a suggestion for next week's issue? Join us at <a href="https://discordapp.com/channels/480462759797063690/485450546887786506">#support-ember-times</a> on the <a href="https://discord.gg/emberjs">Ember Community Discord</a> or ping us <a href="https://twitter.com/embertimes">@embertimes</a> on Twitter.</p>
+
+  <p>Keep on top of what's been going on in Emberland this week by subscribing to our <a href="https://the-emberjs-times.ongoodbits.com/">e-mail newsletter</a>! You can also find our posts on the <a href="https://blog.emberjs.com/tag/newsletter/">Ember blog</a>.</p>
+</div>
+
+---
+
+That's another wrap! ✨
+
+Be kind,
+
+Chris Ng, Jen Weber, Amy Lam, Isaac Lee, Jared Galanis and the Learning Team