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Effect | TypeScript at Scale

@effect-ts

Production-ready software in TypeScript. Open-source library. →Website & Docs: https://effect.website/ →Community & Support: http://discord.gg/effect-ts

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Latest posts by Effect | TypeScript at Scale @effect-ts

Effect CLI v4 Beta 🚀
Effect CLI v4 Beta 🚀 YouTube video by Effect | TypeScript at Scale

Effect CLI v4 Beta 🚀

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

07.03.2026 11:31 👍 1 🔁 1 💬 0 📌 0
Simplifying Logger management in Effect v4 Beta
Simplifying Logger management in Effect v4 Beta YouTube video by Effect | TypeScript at Scale

Simplifying Logger management in Effect v4 Beta

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

06.03.2026 11:48 👍 4 🔁 0 💬 0 📌 0
From Effect Subtyping in v3 to Yieldable in Effect v4 Beta
From Effect Subtyping in v3 to Yieldable in Effect v4 Beta YouTube video by Effect | TypeScript at Scale

From Effect Subtyping in v3 to Yieldable in Effect v4 Beta

www.youtube.com/watch?v=90BR...

05.03.2026 12:17 👍 2 🔁 0 💬 0 📌 0
Preview
Effect Office Hours 19 🔥 YouTube video by Effect | TypeScript at Scale

Effect Office Hours #19

Today -- 10 AM ET / 16:00 CET

Subscribe below for updates:

youtube.com/live/BKYFmci...

04.03.2026 12:46 👍 0 🔁 0 💬 0 📌 0
Why Accessors were removed in Effect v4 Beta
Why Accessors were removed in Effect v4 Beta YouTube video by Effect | TypeScript at Scale

Why Accessors were removed in Effect v4 Beta

youtu.be/INtlPJfjw-I

01.03.2026 14:46 👍 4 🔁 0 💬 0 📌 0
AgentPane Multi-pane web UI for AI coding agents. Run locally, talk to agents over ACP.

This week in Effect:

→ Effect v4 Beta updates 🚀
→ Office Hours Q&A on v4 Beta 🔥
agentpane.dev – a web UI for AI coding agents by Ben Gubler

See all updates ⤵️

effect.website/blog/this-we...

28.02.2026 12:44 👍 0 🔁 0 💬 0 📌 0
Migrating from Effect v3 to Effect v4 Beta 🚀
Migrating from Effect v3 to Effect v4 Beta 🚀 YouTube video by Effect | TypeScript at Scale

Migrating from Effect v3 to Effect v4 Beta 🚀

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

27.02.2026 11:36 👍 5 🔁 0 💬 0 📌 0
Preview
Effect Office Hours 18 🔥 YouTube video by Effect | TypeScript at Scale

Effect Office Hours #18

Tomorrow — Feb 25
10am ET / 4pm CET

Subscribe to YouTube and join us live:

youtube.com/live/5NtYKTL...

24.02.2026 13:21 👍 0 🔁 0 💬 0 📌 0
3x faster runtime. ~70% smaller bundles. Unified core package. | Effect v4 Beta 🚀
3x faster runtime. ~70% smaller bundles. Unified core package. | Effect v4 Beta 🚀 YouTube video by Effect | TypeScript at Scale

Last week we launched Effect v4 Beta 🚀

If you missed the announcement, here’s a recap of the initial overview -- what changed under the hood, what to expect during the beta phase, and how to approach migration:

www.youtube.com/watch?v=j7U4...

23.02.2026 13:48 👍 10 🔁 0 💬 0 📌 1
acemate | The AI Learning Platform for Students and Educators Transform your university documents into interactive study materials. Generate summaries, exams, and solutions to receive immediate feedback.

This week in Effect:

→ v4 beta is live 🚀
→ Office Hours deep dive
acemate.ai hiring an Effect engineer

More below ⤵️

effect.website/blog/this-we...

21.02.2026 11:58 👍 0 🔁 0 💬 0 📌 0
Preview
Introducing Effect v4 beta 🚀 (Office Hours 17) YouTube video by Effect | TypeScript at Scale

Watch the full breakdown:

youtube.com/live/P04R7lU...

19.02.2026 14:49 👍 1 🔁 0 💬 0 📌 0
Video thumbnail

Yesterday we launched Effect v4 beta! 🚀
︀︀
︀︀Bundle size has been a major focus.
︀︀
︀︀Effect has always been tree-shakable, and in v4 we rewrote large parts of the core, significantly reducing bundle size.
︀︀

19.02.2026 14:49 👍 36 🔁 1 💬 1 📌 0
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GitHub - Effect-TS/effect-smol: Core libraries and experimental work for Effect v4 Core libraries and experimental work for Effect v4 - Effect-TS/effect-smol

This is a beta; we'll iterate fast, and we want your feedback:

github.com/Effect-TS/ef...

18.02.2026 17:35 👍 2 🔁 0 💬 1 📌 0
Preview
GitHub - Effect-TS/effect-smol: Core libraries and experimental work for Effect v4 Core libraries and experimental work for Effect v4 - Effect-TS/effect-smol

Today, we launched Effect v4 beta 🚀

Rewritten runtime. Smaller bundles. Unified package system.

Performance: v4 is faster and lighter than v3 across the board.

Rewritten runtime: lower memory overhead, faster execution, simpler internals.

Full announcement:

effect.website/blog/release...

18.02.2026 17:35 👍 29 🔁 4 💬 2 📌 0
Introducing Effect v4 beta 🚀 (Office Hours 17)
Introducing Effect v4 beta 🚀 (Office Hours 17) YouTube video by Effect | TypeScript at Scale

Introducing Effect v4 beta 🚀

Watch live now:

www.youtube.com/watch?v=P04R...

18.02.2026 15:14 👍 3 🔁 0 💬 0 📌 0
Typed Effects in TypeScript: Laziness, Error Handling, Generator Composition (Office Hours 16)
Typed Effects in TypeScript: Laziness, Error Handling, Generator Composition (Office Hours 16) YouTube video by Effect | TypeScript at Scale

Office Hours 16 🔥

Typed Effects in TypeScript: Laziness, Error Handling, Generator Composition

By Kit Langton & Maxwell Brown

www.youtube.com/watch?v=2RxC...

16.02.2026 13:27 👍 3 🔁 1 💬 0 📌 0

This week in Effect:

→ EffectViz (effect-viz.vercel.app) by Christophe Rosset

→ Lalph AI Agent Orchestrator Part 3

→ Office Hours 15

More below ⤵️

effect.website/blog/this-we...

14.02.2026 11:20 👍 6 🔁 0 💬 0 📌 0
Lalph AI Orchestrator: Setting Up Secure and Autonomous AI Workflows #03
Lalph AI Orchestrator: Setting Up Secure and Autonomous AI Workflows #03 YouTube video by Effect | TypeScript at Scale

Lalph AI Agent Orchestrator Part 3 🤖

By Tim Smart & Maxwell Brown

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

13.02.2026 11:04 👍 2 🔁 0 💬 0 📌 0
Effect Canvas Website Demo

Effect Canvas Website Demo

Effect Canvas Demo Website

Effect Canvas Demo Website

EffectCanvas

Exploring Canvas Rendering via an @effect-ts.bsky.social based renderer and animation engine in React

check it out on GitHub
github.com/Inalegwu/Eff...

13.02.2026 10:06 👍 3 🔁 1 💬 0 📌 1
Implementing Effect from scratch: Laziness, Composition, and Practical TypeScript (Office Hours 15)
Implementing Effect from scratch: Laziness, Composition, and Practical TypeScript (Office Hours 15) YouTube video by Effect | TypeScript at Scale

Office Hours 15 🔥

Implementing Effect from scratch: Laziness, Composition, and Practical TypeScript

By Kit Langton & Maxwell Brown

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

10.02.2026 14:06 👍 2 🔁 0 💬 0 📌 0
Preview
This Week in Effect - 2026-02-06

This week in Effect:

→ Drizzle ORM now has native Effect Schema support! 🎉

→ Claude keeps getting Effect-pilled 🤖

→ Polar is using Effect in production! ✨

→ Effect and the Near Inexpressible Majesty of Layers by Kit Langton

More below:

effect.website/blog/this-we...

07.02.2026 15:07 👍 3 🔁 0 💬 0 📌 0
Orchestrating AI Coding Agents with Linear, Git Worktrees, and PR-based review | Hacking on Lalph 2
Orchestrating AI Coding Agents with Linear, Git Worktrees, and PR-based review | Hacking on Lalph 2 YouTube video by Effect | TypeScript at Scale

🤖 Hacking on Lalph #2

Orchestrating AI Coding Agents with Linear, Git Worktrees, and PR-based review

With Tim Smart & Maxwell Brown

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

05.02.2026 13:10 👍 0 🔁 0 💬 0 📌 0
Preview
Effect Office Hours · Luma Come hang out and ask us anything about Effect. Feel free to submit questions, buggy code examples, or any sort of qualm or complaint, and we'll do our best to…

🔥 Sign up for tomorrow's Effect Office Hour:

luma.com/52k0xd7c

03.02.2026 17:02 👍 2 🔁 0 💬 0 📌 0
Effect Services & Layers (Office Hours 14)
Effect Services & Layers (Office Hours 14) YouTube video by Effect | TypeScript at Scale

Office Hours 14 🔥

Effect Services & Layers

By Kit Langton & Maxwell Brown

www.youtube.com/watch?v=06ht...

02.02.2026 13:14 👍 1 🔁 0 💬 0 📌 1
Preview
This Week in Effect - 2026-01-30

This Week in Effect:

→ Actor Model | Effect Cluster by Lucas Barake
→ Foldkit, frontend framework built on Effect by Devin Jameson
→ `effect-inngest`, an effect-native client for inngest by Erik Shestopal

More updates below:

effect.website/blog/this-we...

31.01.2026 17:02 👍 2 🔁 0 💬 0 📌 0
Refactoring Twitch-Spotify Integration with Effect Cluster
Refactoring Twitch-Spotify Integration with Effect Cluster YouTube video by Effect | TypeScript at Scale

Refactoring Twitch-Spotify Integration with Effect Cluster

By Maxwell Brown

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

30.01.2026 12:20 👍 2 🔁 0 💬 0 📌 0
Preview
Just Fucking Use Effect Stop fighting with try-catch. Stop drowning in Promise.all. Just fucking use Effect.

I spent the past couple weeks getting @effect-ts.bsky.social pilled. I don't love TS, but it's everywhere. If I have to use it, I want typed errors and a standard library created by sane adults.

justfuckinguseeffect.dev

27.01.2026 22:37 👍 8 🔁 1 💬 0 📌 0
Office Hours 13: andThen vs flatMap, HTTP Client vs HTTP API, AI workflow and Ralph, etc.
Office Hours 13: andThen vs flatMap, HTTP Client vs HTTP API, AI workflow and Ralph, etc. YouTube video by Effect | TypeScript at Scale

Office Hours 13 🔥

`andThen` vs `flatMap`, HTTP Client vs HTTP API, AI workflow and Ralph, etc.

By Maxwell Brown

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

27.01.2026 12:21 👍 1 🔁 0 💬 0 📌 0
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Effect Paris #6, mar. 3 févr. 2026, 19:00 | Meetup Nous sommes ravis d'organiser la 6ème édition du Meetup Effect Paris pour cette nouvelle année 2026, qui sera pour la première fois hébergée chez Galadrim ! Le meetup aura

🇫🇷 The Effect Paris Meetup #6 is happening on February 3rd at 19:00.

Organised by the evryg team, and hosted by Galadrim.

Sign up below to attend the event:

www.meetup.com/fr-fr/effect...

26.01.2026 13:21 👍 2 🔁 0 💬 0 📌 0
Preview
This Week in Effect - 2026-01-23

This Week in Effect:

→ 13k 🌟 on GitHub
→ Lalph | AI Agent Orchestrator by Tim Smart
→ Tenzir is hiring an Effect engineer

More below ⤵️

effect.website/blog/this-we...

24.01.2026 13:47 👍 2 🔁 0 💬 0 📌 0