Effect 3.13 has been released! 🚀 Here’s a summary of what’s new: ▸ Schema.standardSchemaV1 ▸ Effect.fn improvements ▸ RcMap improvements ▸ Effect.transposeOption ▸ Effect.filterEffectOrElse More on our blog post below: effect.website/blog/releases/…
This Week in Effect - 2025-02-14
Hi Effecters!
Welcome back to This Week In Effect (TWIE) - your weekly update of the latest developments in the Effect community and ecosystem.
Effect is a powerful TypeScript library that helps developers create complex, synchronous, and asynchronous programs. One key feature that sets Effect apart is how it leverages structured concurrency to provide features such as async cancellation and safe resource management, making it easier to build robust, scalable, and efficient programs.
To get started, below you’ll find links to our documentation as well as our guide for installing Effect. Enjoy!
Recent major updates:
- The Effect Days conference is returning this March 2025! 🎉
- The Effect community on Discord reached 3820+ members!
- Effect 3.13 has been released.
- Effect 3.13 has been released!
Here are all the technical changes from this week (note that changes included in the 3.13 release will not be listed).
- Update forEach function in Chunk to include missing index parameter and adjust tests accordingly (Bug Fix)
- Schema: add missing description annotation to BooleanFromString (Bug Fix)
- Ensure Channel executor catches defects in doneHalt (Bug Fix)
- Match module: add jsdocs, type-level tests, 100% coverage (Documentation Update)
- Use Map for Scope finalizers, to ensure they are always added (Bug Fix)
- Schedule: add JSDocs (Documentation Update)
- Schedule: fix unsafe tapOutput signature (Bug Fix)
- Schema: add missing support for tuple annotations in TaggedRequest (Feature)
- Fix Context.Tag inference using explicit generics (Bug Fix)
- Preserve function length property in Effect.fn / Effect.fnUntraced (Bug Fix)
- Fix Option filterMap example (Documentation Update)
- Run platform workers in a Scope, send errors or termination to a CloseLatch (Feature)
- HttpApiBuilder: URL parameters are now automatically converted to arrays when needed (Bug Fix)
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We are working on a few AI integration packages and collecting feedback from companies using Effect in AI-powered app development. Feel free to reach out to Maxwell Brown on X or join the #ai channel on our Discord server.
Are you or your company building AI-powered apps with @EffectTS_? We want to hear from you! 🤖🚀 We’re working on AI integration packages for Effect and need early feedback! If this applies to you, join the #ai channel in our Discord or DM me here! 👉 discord.gg/effect-ts
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Dillon Mulroy live-streamed three episodes of his series Building a budget syncing app for Splitwise and YNAB with AI and EffectTS 🚀 on his Twitch channel.
The Effect Days conference is happening on March 19-21, 2025, and it’s the perfect chance to connect with the Effect community and celebrate the Effect ecosystem in person! Get your ticket! 🎟️
Effect Days is returning this March 2025, set in a beautiful seaside location in Tuscany, Italy! 🇮🇹 Join us for insightful talks, delicious food, and beautiful coastal views. Grab your ticket now! 🎟️ effect.website/events/effect-…
This week, we announced Tim Suchanek and David Golightly as conference speakers.
- Tim Suchanek is the founder of expand.ai and was also a speaker at the Effect Days 2024.
Excited to welcome back Tim Suchanek @TimSuchanek to Effect Days! Tim, founder of expand.ai, is building a reliable scraping infrastructure that instantly turns any website into a type-safe API. Don’t miss his talk at Effect Days 2025! 🎟️effect.website/events/effect-…
- David Golightly is a Staff Software Engineer at MasterClass and is working on an AI chatbot powered by Effect.
David Golightly, Staff Software Engineer at @MasterClass, worked on an AI voice chatbot, leveraging Effect to make it happen! 🚀 Join us to hear his insights on building AI-powered experiences with Effect. 🎟️ Get your ticket now: effect.website/events/effect-…
Shout out to our conference sponsors, Inato and Evryg.
Inato is a global clinical trial marketplace that brings research to patients where they live. The Inato team is a long-time supporter of Effect and actively advocates for it within the developer community.
We're excited to have @inatohealth as a sponsor of Effect Days 2025! Inato is transforming clinical research by creating a global clinical trial platform that brings research to patients where they live. 🎟️ Book your ticket & join us this March in Italy! effect.website/events/effect-…
Evryg is a Paris-based software consulting firm specializing in Effect. The Evryg team leverages deep expertise in Effect to deliver innovative software solutions for clients.
Excited to announce @EvrygDotCom as a sponsor for our Effect Days conference again this year!🚀 A Paris-based software consulting firm with Effect expertise, evryg continues to support & empower the Effect community! 🎟️🎟️Get your conference tickets: effect.website/events/effect-…
- Maxwell Brown and Tim Smart were live on X(Twitter) and Twitch on Tuesday with a new episode of Reimagining ContentLayer with Effect.
Re-Imagining Contentlayer with Effect x.com/i/broadcasts/1…
Don’t forget to listen to our Cause & Effect podcast hosted by Johannes Schickling, and available on Youtube, X(Twitter), and audio platforms like Spotify and Apple Podcast. This podcast highlights stories from software engineers and companies using Effect in production. Each episode explores their journey of adopting Effect, the learning process, the challenges faced, and the benefits of integrating Effect into their tech stack.
In our first episode, we were joined by Attila Večerek, Tech Lead & Staff Engineer, who discussed how Zendesk incrementally adopted Effect in a polyglot environment with a large codebase. Give it a listen and let us know what you think on our social media or Discord!
In December 2024, we unveiled the Effect Merch Store, with a selection of Effect-branded items designed for the community. All orders are processed through Printful.
Effect Merch is here! We’re excited to announce the launch of our Effect merch page! Grab your favorite swag & show your love for Effect in style! 🧢 effect.website/merch
More and more companies are adopting Effect in their projects — here’s a list of companies looking for software engineers with Effect experience:
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Superwall: Full-stack TS developer with backend & infrastructure experience.
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Expand.ai: Founding Engineer
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Platonic Systems: Remote Effect Engineers
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Inato: Senior Product Engineer
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Medbill.ai: Founding Software Engineers (full-stack and backend)
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Oneiro Solutions: Software Engineer - Core Team. Join our Discord and DM leighman for further info.
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Microsub: TS Developer
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Samsung Food: Full Stack Developer
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Stealth team looking for an Engineer with experience in Effect. The job posting is available in the
#job-boardchannel on our Discord.
Disclaimer: Please note that these job postings are shared for informational purposes, and we encourage applicants to verify details directly with the hiring companies.
That’s all for this week. Thank you for being a vital part of our community. Your feedback is highly valued as we fine-tune this format. Feel free to share your thoughts, and we’ll do our best to tailor it to the needs of our community.
Effect Community Team