The conference speaker in front of the audience talking about Effect’s world-class community and encouraging them to keep listening, building, and educating the early adopters.

A photo of the slide revealing Effect’s true potential: becoming a platform for building high-quality software fast and cheap.

Had an amazing time speaking at Effect Days last week! ✨ Loved sharing insights on software quality and connecting with so many brilliant engineers. Big thanks to @effect-ts.bsky.social for organizing the event and everyone who attended my session! 🚀

Release v2.2.4 · denoland/deno 2.2.4 / 2025.03.14 feat(otel): span context propagators (#28460) feat(unstable/otel): add otel tracing to node:http.request (#28463) feat: support FORCE_COLOR (#28490) fix(bench): lower bench time...

🚀 Deno v2.2.4 is released:

- Built-in OpenTelemetry
support for span context propagators (tracecontext, baggage)
- Built-in OTel tracing for node:http.request
- LSP now starts the TypeScript server lazily

other improvements in the release notes:
github.com/denoland/den...

The Effect Days schedule is here! 🚀

Talks on AI Agents, DevTools, Effect Cluster, Error Management, and real-world use cases from Zendesk, MasterClass, Vercel, Inato, Markprompt, DXOS, and more!

Take a look at the 3-day schedule below:

effect.website/events/effec...

What's new in fast-check 4.0.0? | fast-check The release of fast-check 4.0.0 marks the end of the 3.x series. With this new version, we've streamlined and refined our APIs, embraced modern standards, and removed unnecessary polyfills to enhance ...

🚀 Version 4.0.0 is out!

More details at fast-check.dev/blog/2025/03...

A 10x Faster TypeScript - TypeScript Embarking on a native port of the existing TypeScript compiler and toolset to achieve a 10x performance speed-up.

Today we're thrilled to announce our effort to port the TypeScript compiler and language service to native code, gaining a 10x speed boost in build times and editor responsiveness!

devblogs.microsoft.com/typescript/t...

Scaling AI for Customer Support at Markprompt with Effect | Cause & Effect #2 YouTube video by Effect | TypeScript at Scale

Full episode, show notes, and transcript on effect.website/podcast/epis...

www.youtube.com/watch?v=8lz9...

🎟️ Grab your tickets here if you haven’t already: effect.website/events/effec...

Effective Pragmatism: Introduction Welcome to my new series about Effect. In this series, I want to discuss why I think Effect is one of...

🚀 Exciting news! I’m launching a new blog series on Effective Pragmatism - the same topic I’ll be speaking about at Effect Days in just 2 weeks.

I’ll be publishing a new post every 2-3 weeks, exploring the topic of software quality. Stay tuned!

dev.to/attila_vecer...

A glimpse at what’s coming to Effect Days:

◆ AI Agents

◆ Error Management & Testing

◆ Effect Cluster & Fibers

◆ Next-Gen DevTools

◆ Rebuilding Redis for great Effect

...and much more!

🎟️ Get your ticket now:

effect.website/events/effec...

Good stuff! Looks like this could be the beginning of your @effect-ts.bsky.social journey 🙂

This is absolutely mind-blowing! The sheer amount of determination to get something like this done is out-of-this-world! I’ve only ever seen anime characters demonstrate this sort of resolve. A devil fruit was definitely awakened during this process.

Next up at Effect Days: Dmytro Maretskyi, Software Architect at DXOS.

He aims to transform how applications handle state & data consistency by combining 𝗗𝗫𝗢𝗦'𝘀 𝗹𝗼𝗰𝗮𝗹-𝗳𝗶𝗿𝘀𝘁 𝗶𝗻𝗳𝗿𝗮𝘀𝘁𝗿𝘂𝗰𝘁𝘂𝗿𝗲 with the power of 𝗘𝗳𝗳𝗲𝗰𝘁 and 𝗔𝗜-𝗱𝗿𝗶𝘃𝗲𝗻 𝗮𝘂𝘁𝗼𝗺𝗮𝘁𝗶𝗼𝗻.

Join us this March in 🇮🇹:

effect.website/events/effec...

Drop that nonsense, you’re good!

Schema to JSON Schema Convert schema definitions into JSON Schema for data validation and interoperability.

Not sure I understand the issue but sounds like Effect Schema could help you. Decide for yourself.

effect.website/docs/schema/...

TypeScript 5.8 RC is released 🎉

🔶 "nodenext" gets require(ESM)
🔶 "nodenext" deprecates Import Assertions
🔷 erasableSyntaxOnly flag for Node
🔷 Checker: Granular Return Types
🔷 DTS: Computed Property name preservation
🔷 Perf: libReplacement flag
🔷 Perf: Program load/update optimizations

Instant subscribe!

I’m super excited and looking forward to the opportunity to talk about my favorite tech and topic at Effect Days this year. Get your tickets if you haven’t already 😉

Announcing Vitest 3.0 Vitest 3.0 Release Announcement

Vitest 3.0 is here!

My journey as a developer: Exploring TypeScript & Effect | Dillon Mulroy (Effect Meetup SF '24) YouTube video by Effect | TypeScript at Scale

At our Effect Meetup in SF, Dillon Mulroy @dillonis.online, Software Engineer @vercel.com, shared how Effect is key to building reliable software and addressing gaps in the JavaScript ecosystem, drawing from his extensive experience in the JS & TS ecosystem.

www.youtube.com/watch?v=HLsc...

Effect 3.11 (Release)

@effect-ts.bsky.social 3.11 has been released!

Includes features like Effect.fn (auto-traced functions with better stack traces), Micro improvements and more.

Blog post is here: effect.website/blog/release...

I love that the way to make tools better for AIs is by making tools better for humans.

It was a real pleasure and a lot of fun to be the first guest of the new Cause & Effect Podcast. Thank you, @schickling.dev , for being such a great host, and thank you @effect-ts.bsky.social for pushing the boundaries of building production-grade software with TypeScript!