Modern JavaScript Testing: Integration, Contract Testing & AI Tools - JSJ 692

Modern JavaScript Testing: Integration, Contract Testing & AI Tools - JSJ 692

In this episode of JavaScript Jabber, I sit down with Dan Shapir and our special guest, Yoni Goldberg, to dive deep into the ever-evolving world of JavaScript testing. Yoni, a consultant who’s worked with over 40 organizations to refine developer workflows, shares valuable lessons learned from helping teams design efficient and reliable tests.

We explore emerging trends in testing, including the rise of browser-based test runners, the shift from unit testing toward more integration and component testing, and how modern frameworks like Playwright, Vite Test Browser Mode, and Storybook are changing the way developers think about confidence in their code. We also tackle the role of AI in writing and maintaining tests, the pros and cons of mocking vs. real backends, and why contract testing is becoming essential in 2025.

If you’ve ever struggled with flaky end-to-end tests, wondered how to balance speed with confidence, or wanted a clear breakdown of modern testing tools, this conversation will give you practical insights and fresh perspectives to take back to your projects.

Links & Resources

Become a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

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JavaScript and IoT with Nick Hehr and Peter Hoddie - JSJ 545

JavaScript and IoT with Nick Hehr and Peter Hoddie - JSJ 545

Steve, Dan and A.J talk with Nick Hehr and Peter Hoddie about using JavScript with IoT devices. They cover a wide range of topics, including the XS JavaScript Engine, the only complete ECMAScript 2018 engine optimized for embedded devices (created by Moddable), and even get into the nitty gritty of how it is built and how it works. They also cover TC53 - the standards committee for JS in embedded systems, a committee that Nick and Peter are part of. In picks, they get into a great discussion on home security systems and their various security issue, and of course, Steve brings the great dad jokes. SponsorsTop End DevsRaygun | Click here to get started on your free 14-day trialCoaching | Top End DevsLinksTC53Resuscitating IoT with JavaScript - Peter Hoddie & Lizzie Prader, Moddable - YouTubeECMA-419: The ECMAScript Embedded Systems API and J5e - Donovan Buck, BrandExtract - YouTubeHipsterBrownModdableTwitter: @hipsterbrownTwitter: @phoddiePicksAJ- GitHub - BeyondCodeBootcamp/jsdoc-typescript-starterAJ- Typing without TranspilationAJ- Eyeglasses Online | Eyewear for Everyone™ | Zenni OpticalAJ- Amazon.com. Spend less. Smile more.AJ- Oakley MX L Frame Adult Tear-Off Off-Road/Dirt Bike Motorcycle Eyewear AccessoriesNick -MicrocenterNick- Abode Home Security - #1 DIY Wireless Home Security SolutionNick-  Build With Matter | Smart Home Device SolutionPeter- The Extensible Web ManifestoPeter- Fanny Mendelssohn - WikipediaSteve-  Introducing multitasking to Arduino | Arduino BlogSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

16 Elo 20221h 38min

The Story of Mel with Tomer Lichtash and David Frankiel - JSJ 544

The Story of Mel with Tomer Lichtash and David Frankiel - JSJ 544

Today we have special guests Tomer Lichtash and David Frankiel, a web developer and programmer behind the epic hacker folklore project The Story of Mel, a comprehensive guide to The Story of Mel.   This story, which has survived through all the changes in the internet since its birth in 1983, and has morphed through all its iterations into something almost poetic in nature.  This allegory tells the story of the birth of of high-tech culture as we know it today, and creates some heated debate among our panelists as to the validity of its meanings.  Tomer and David tell some of the back story into their journey to discover if the story is a hoax, or if is truly real. SponsorsTop End DevsCoaching | Top End DevsLinksMel's Loop - A Comprehensive Guide to The Story of MelCreeds of Craftsmanship · Issue #18 · BeyondCodeBootcamp/beyondcodebootcampTwitter: @tomerlichtashtomerlichtash - OverviewPicksAJ- Form follows function - WikipediaAJ- dotGo 2015 - Rob Pike - Simplicity is ComplicatedAJ - The UnexplainedDan - Downturn in the Tech IndustryDan- The Thief, His Wife and the Canoe (TV Mini Series 2022) - IMDbDan - War in UkraineDavid- What is Windows Presentation Foundation - WPF .NETDavid - Nouran ZoharDavid - In theory there is no difference between theory and practice, but in practice there is.Tomer - Net Pioneers 1.0Tomer- Post-Gogol World, by The Daniil KharmsSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

9 Elo 20221h 6min

Splatty-doo and Other JavaScript Features You Should Avoid - JSJ 543

Splatty-doo and Other JavaScript Features You Should Avoid - JSJ 543

Today in this all panelist episode, we talk about JS features you should avoid using.  However opinions don't always align, and some come with much debate!  Although we couldn’t cover them all, today we discuss:eval withargumentsdo while for I++continue classesprototypesthisvar with letdeleteSponsorsTop End DevsRaygun | Click here to get started on your free 14-day trialCoaching | Top End DevsLinksJavaScript Remote Conference 2022Twitter: ‎@cmaxwPicksAJ- Virginia Ctenucha Ctenucha virginica (Esper, 1794) | Butterflies and Moths of North AmericaAJ- The Mistborn Trilogy by Brandon SandersonAJ- Thread pitch gauge at Lowes.com: Search ResultsCharles- AntidoteCharles- Conferences | Top End DevsCharles- 1883 - Yellowstone Prequel (Official Site) Watch on Paramount+Dan- Can I use... Support tables for HTML5, CSS3, etcDan - War in UkraineDan- Webb Space Telescope GSFC/NASASteve- Coworker Standing At Desk Obviously Just Hasn't Learned About Chairs YetSteve - Dad JokesSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

2 Elo 20221h 16min

Upcoming Performance Metrics for the Web - JSJ 542

Upcoming Performance Metrics for the Web - JSJ 542

Today we have three guests on the show, Annie Sullivan, Yoav Weiss, and Michal Mocny, all of who are engineers who work for Google on the Chrome Web platform.  Looking forward to Google’s new developments for measuring web performance, we dive deep into upcoming performance metrics Largest Contentful Paint (LCP) and Interaction to Next Paint (INP), a full page lifecycle metric.  We discuss what user page interactions we can measure successfully and which we cannot.  We discuss the challenges of single-page applications when looking at core web vitals. SponsorsTop End DevsCoaching | Top End DevsLinksTop End Devs | ConferencesTwitter: @anniesullieTwitter: @mmocnyTwitter: @yoavweissPicksAJ- GothamGo 2018 - Things in Go I Never Use by Mat RyerAJ - AmericaAnnie- Keynote by Mr. Thomas Dullien - CyCon 2018Charles- Just OneDan - Felix Arntz and WordPress PerformanceDan - WatermelonsDan - War in UkraineMichal- Single Handed PodcastMichal - Samurai CarpenterSteve - Dad JokesYoav - No meetings weekYoav- TPAC 2022Yoav- performance.now(); October 27-28, 2022, AmsterdamSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

26 Heinä 20221h 16min

Navigating Online Events and Conferences - JSJ 541

Navigating Online Events and Conferences - JSJ 541

Today, in this all-panelist episode we talk about upcoming online events and conferences.  With upcoming Top End Devs meetups and conferences, starting in August, we talk about all the benefits of being in person at an event, and the camaraderie at and after the event.  We talk about the ways that Airmeet allows for a good connection between the speakers and audience.  You’ll also pick up some tips on becoming a speaker at one of these events. SponsorsTop End DevsRaygun | Click here to get started on your free 14-day trialCoaching | Top End DevsLinksTop End Devs | ConferencesGitHub - dadoomer/markdown-slidesThe Original Skunk Works - Nickolas Means | The Lead Developer UK 2017PicksAJ- CrowdNode Masternode Hosting - CrowdNodeAJ- coolaj86/crowdnode-cliAJ- Uniquely Human: A Different Way of Seeing AutismCharles - Airmeet.comCharles - Riverside.fmCharles - Devchat.tvCharles - Premium podcasts from Top End Devs are coming soon!Charles - TopEndDevs.comCharles - Dice ForgeCharles- JavaScript Remote Conference 2022Dan- The Curious Incident of the Dog in the Night-Time: A Novel (Vintage Contemporaries)Dan - The importance of taking care of your bodyDan- Web DirectionsDan - War in UkraineSteve- Vue MasterySteve - Dad JokesSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

19 Heinä 20221h 7min

Builder.io and Qwik - JSJ 540

Builder.io and Qwik - JSJ 540

Today we talk with Steve Sewell, co-founder and CEO of Builder.io, about their visual editor and designer which connects to many open source systems.  Running within a website wysiwyg, it integrates with most modern front end frameworks, such as React, Due and Svelte.  We discuss how it functions and connects to various systems.  We also dive into the backstory of how and why builder.io created their framework called Qwik. SponsorsTop End DevsCoaching | Top End DevsLinksSteve - Builder ioDrag and drop page builder and CMS - Builder.ioTop End Devs | ConferencesTopEndDevs (@topenddevs) TikTok | Watch TopEndDevs's Newest TikTok VideosTwitter: @Steve8708Steve (Builder.io) (u/steve8708) - RedditInstagram: steve8708TikTok: steve8708PicksAJ- Sapiens: A Brief History of HumankindAJ- JavaScript: The Good Parts: The Good PartsCharles- Lost Ruins of ArnakCharles- Top End Devs | ConferencesCharles- Anedot | Powerful giving tools made easyDan - Callout to Twitter thread comparing Copilot to tabnineDan- Spinning Silver: A NovelDan - War in UkraineSteve Edwards - GitHub Copilot available to all developerSteve Sewell - TikTokSteve Sewell - DesignerTom (@designertom) TikTok | Watch DesignerTom's Newest TikTok VideosSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

12 Heinä 20221h 24min

Hydrogen and Oxygen - JSJ 539

Hydrogen and Oxygen - JSJ 539

Today we talk with Josh Larson a senior staff developer at Shopify who is front and center in development of Hydrogen.  We learn how Hydrogen addresses the varying needs of shop owners to build storefronts quickly and effectively.  With rendering on the server only, this metaframework provides a toolkit helping customers build a more customized web presence.  We learn about Oxygen, which allows customers to host and deploy Hydrogen. We also discuss the decision behind the decision to use React to build this framework, how the framework provides super-custom experiences for the user, and discuss some of the technical challenges faced when building it.   SponsorsTop End DevsRaygun | Click here to get started on your free 14-day trialCoaching | Top End DevsLinksShopify Developers Platform-Build. Innovate. Get paid.HydrogenJosh LarsonTwitter: @jplhomerjplhomer - OverviewGitHub - Shopify/hydrogenJosh Larson - Senior Staff Developer - Shopify | LinkedInHow We Built Hydrogen: A React Framework for Building Custom Storefronts- Top End DevsPicksAJ- Muscle Rack - Freestanding Shelving Units - Shelving - The Home DepotAJ- "WHAT IS A WOMAN?"Charles- Legendary: A Marvel Deck Building Game - Fantastic FourCharles- Legendary: A Marvel Deck Building Game - The New MutantsCharles- Conferences | Top End DevsCharles - TopEndDevs on TikTokDan-  Dan - Matt Pockock - TypescriptDan- The ins and outs of Core Web Vitals Dan- The ins and outs of Core Web Vitals by Dan ShappirDan - Take a vacationDan - Stranger ThingsDan - War in UkraineJosh- The Incredibles Official Site presented by Disney MoviesJosh- Incredibles 2Support this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

5 Heinä 20221h 4min

To TypeScript or Not to TypeScript - JSJ 538

To TypeScript or Not to TypeScript - JSJ 538

Today we talk with Matt Pocock, who comes from Oxfordshire, England.  As a big fan of TypeScript and maintainer of the Xstate library, we discuss the benefits and downsides of TypeScript.  As the discussion gets a bit heated, we debate the true value of TypeScript, and where it holds value to the programming community. SponsorsTop End DevsCoaching | Top End DevsLinksAdvanced TypeScript - Become a TS WizardTypeScript Error TranslatorPodcast Hosting and Analytics - Welcome to Fireside!Transistor - podcast hosting for creatives, brands, professionalsStately - Visualize your application logicMatt Pocock - YouTubeTwitter: @mattpocockukPicksAJ- dotGo 2015 - Rob Pike - Simplicity is ComplicatedAJ- GothamGo 2018 - Things in Go I Never Use by Mat RyerAJ- GopherCon 2019: Mat Ryer - How I Write HTTP Web Services after Eight YearsAJ- Plain Text - Dylan Beattie - NDC Oslo 2021AJ - coolaj86 on TwitchCharles- Legendary: A Marvel Deck Building Game - Dark CityCharles - Conferences | Top End Devs Charles - Sponsors | Top End Devs Charles- Trusted CDN Provider | Faster Content Delivery | CacheFlyCharles - Podcasts | Top End Devs Matt- The Crew: The Quest for Planet NineMatt - Race for the GalaxySteve - Dad JokesSupport this podcast at — https://redcircle.com/javascript-jabber/donationsPrivacy & Opt-Out: https://redcircle.com/privacyBecome a supporter of this podcast: https://www.spreaker.com/podcast/javascript-jabber--6102064/support.

28 Kesä 20221h 11min

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