Sam and Ryan chat about Ember at Microconf, two-way bindings, and TDD vs. "Test before commit". Topics: 0:00 – When direct state mutations make sense 8:15 – Ember at MicroConf & how other communities think about Ember 29:42 – TDD versus “Test before commit” Links: Pure UI by Guillermo Rauch

Adam Wathan, the creator of Tailwind CSS, talks about coupling in HTML and CSS, different styling approaches, messy templates, component classes in Tailwind, CSS patterns in SPA, experimental design tools, and the future of Tailwind.

Robert and Tom join Sam and Ryan to chat about how LinkedIn uses Ember, when teams should use Engines, build optimizations that are coming to Ember CLI and more. Topics: 0:00 – Engineering challenges of scale at LinkedIn 6:00 – Engines at LinkedIn 8:40 – When should teams use Engines? 15:25 – What are some of the downsides of Engines? 17:38 – Build-time versus AOT library transpilation 21:47 – How just-in-time compilation relates to code-splitting and importing node modules 29:50 – Ember’s philosophy on bringing new JS features to years-old apps 32:55 – How can the community be most helpful when contributing to Ember? 41:32 – Analytics and performance tracking at LinkedIn 46:07 – What are your thoughts on Vue.js? (Question from jamiewhite) 52:18 – How can we help improve the developer experience of using Handlebars templates (autocomplete, error correction, template linting, etc.)? 1:02:40 – Moving questions from Slack to the Discussion forum

Sam and Ryan chat about Tailwind and compilers (again), Ryan's EmberJS homepage teardown, and releasing with git tags. They also answer some listener questions. Topics covered: 0:00 – Compilers, Tailwind, and APIs for styling components 17:00 – Ember.js Homepage teardown 30:48 – git tag for immutable gh references We also answers some listener questions: 37:14 – Q: What's the deal with using websockets in Ember? Any good patterns beyond creating some kind of Ember service to listen to the socket and push data into the store? (@yohanishkin on Slack) 40:57 – Not sure if you’ve talked about it at all yet, but the this topic seems worth further exploration: [Should Ember better define its use of Slack?] @mattmcmanus

Sam and Ryan chat about Sketch’s new Prototyping feature, using Amazon Workspaces to develop Ember apps in a Windows environment on a Mac, and how to use git tag to ensure your project’s dependencies don’t disappear. They also answer some listener questions. Topics Sketch prototyping + design Ember on Windows git tag for immutable gh references Questions Q: with the latest Router service it’s possible to transition to another page from everywhere in the code. Before, we created specific actions in the route, just to transition to another page. Is transitioning to other pages from inside components considered a bad practise, or is it totally fine (My co workers feels it’s ‘dirty’ to transition from inside components.)? Do you have any guidelines when and where to transition with the new service? (edited) (@maarten from Slack) Can you use mirage for other applications as well? (ex: Rails app with same API dependencies as Ember.) (https://twitter.com/keystonelemur/status/979777292745363456) Can you talk about how to upgrade ember.js smoothly? I always have trouble bumping our ember version, mainly I think due to some add-ons. But the error message are not that useful. (https://twitter.com/tantantanmian/status/980662478374805505)

Alex Matchneer chats with Sam and Ryan about challenging routing patterns in Ember, his involvement with the Ember community, and what Ember’s next router might look like. Topics covered: Routing patterns from mobile apps that are difficult with Ember Lessons learned from community involvement The concept of timespans Fighting community conventions Server-driven state changes Declarative routing Alex also answers some listener questions: When are you going to release a full album? If you could improve one thing with Ember, what would it be and why? Do you have strategies for teaching ember-concurrency to someone who doesn't know about generator functions? Do you try to teach those separately first? What are some JavaScript patterns you don't see being used as often as you think they should? What are some concepts/design patterns you wish all developers would know about and internalize? How do non-ember-core members become more involved in ember-core? What are some ways to bridge the gap between basic contributions and the complicated RFC process? How do you drive community change from only addon code?

Sam and Ryan talk about their new series, “Declarative rendering,” and why we should use steelman arguments instead of strawman arguments when talking about technology. They also answer some listener questions. Topics covered: Declarative rendering, their new series Steelman versus strawman arguments Listener questions: I care about lazy loading ember code, like routes. My knowledge is that’s its only possible with ember engines, but I’m not sure. Thanks a lot – @sommer_gerrit on Twitter Podcast about ember-engines might be cool – @iflask on Twitter My question: is it time to pitch PWA instead of native apps for clients wanting a presence on mobile (re: the new Safari release) – @real_ate on Twitter Question for the show -> how might writing glimmer components be different in the coming months as we unlock that as first class (thru the eyes of a traditional ember 2 developer) – @toranb on #topic-embermap from Slack Ember Data can get complicated in a hurry when not using a JSON:API standard API. What are some strategies to work with these kinds of APIs assuming the API cannot be changed? – @localpcguy on #topic-embermap from Slack

Sam and Ryan talk about Functional CSS training at EmberConf Some ideas for hiding styling implementation details from templates A new setup for multiple staging environments An idea from data modeling called “Making the impossible, impossible” How to use data down actions up effectively in forms They also answer some listener questions: When should I use polymorphic or reflexive relationships? When do I need to explicitly name a relationship’s inverse? When should I reference relationships and when should I embed them?

Oli Griffiths joins Sam and Ryan to talk about his experience using typed languages, what kinds of benefits static could bring to the Ember developer experience, and his upcoming EmberConf training on Broccoli.js.

Sam and Ryan talk about the upcoming Operations addition to the JSON:API spec, adding FastBoot support to Storefront, how to think about caching in Fastboot, and a thought experiment around how Ember might niche down and focus on its strengths.