Hi Effecters!

Welcome back to a This Week In Effect (TWIE), our weekly update that aims to help you keep track of everything that is going on inside our Community and the Effect Ecosystem.

If it’s your first time here, Effect is a powerful TypeScript library designed to help developers create complex, synchronous, and asynchronous programs. One of the key features 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 our quick-start guide and documentation that will be your first step in your Effect journey. Enjoy!

Effect quick-start guide

Effect docs

#Overview of TWIE

If you're new to TWIE, here are a few words on what TWIE is and what it aims for.

We’re happy to see the community growing so fast, with more and more people adopting Effect. At the same time, we understand that it might not be easy keeping up with everything that is going on in the Effect Ecosystem:

• Our Discord server reached 2130+ members a few days ago and the engagement is at an all-time high.
• We just had our very first Effect Days Conference in Vienna on February 23, 2024. It's been an amazing experience connecting with our community in person. If you couldn't join us in Vienna, we've got plenty of exciting updates and content coming your way, so stay tuned!
• All projects around Effect are receiving key updates and there has been a lot of activity on GitHub!

We want to make it easy for you to find all the info you need to fully enjoy your Effect journey and actively engage with our community!

And, that’s why we created TWIE – a weekly update to inform you about key events about Effect in the previous week, both from the community (Discord discussions, X posts, YouTube content, etc.) and from a technical standpoint.

Now, back to business!

#Technology

Below you may find the list of all changes that occurred last week.

#Effect Core

• Add Duration.subtract api (Feature)
• Add BigInt.fromString and BigInt.fromNumber (Feature)
• Fix interruption of parked requests (Bug Fix)
• Collect exits on forEach interrupt of residual requests (Bug Fix)
• Add Config duration (Feature)

#Effect Vitest

• Fix helper signatures (Bug Fix)

#Effect Printer

• Remove the Render module from printer (Bug Fix, Feature)

#Effect Experimental

• Don't persist items with a TimeToLive of zero (Bug Fix)

#Effect Platform

• Add Cookies module to /platform http (Feature)
• Expose Schema ParseOptions in /platform schema apis (Feature)
• Add set-cookie headers in Http.response.toWeb (Feature)
• Readme: add HTTP Client section (Documentation Update)
• Add undici http client to @effect/platform-node (Feature)
• Fix broken imports in /platform (Bug Fix)
• Make /platform ClientRequest implement Effect (Feature)

#Effect Schema

• Fix Schema.extend with nested union (Bug Fix)
• Extend should un-nest sub-unions (Bug Fix)
• Use BigInt.fromString and BigInt.fromNumber for BigInt Schemas (Refactor)
• Update schema readme (Documentation Update)
• Readme: pattern to simplify recursive schema definition (Documentation Update)
• Readme: add guidelines for messages (Documentation Update)
• Corrected the optional signature to exclude invalid options (Bug Fix)
• Export null from the AST module (Refactor)
• Fix ts 5.4 build errors (Bug Fix)

#Community

In the last week, we welcomed +75 new Effecters to our Discord server! Thank you to all our new members for joining the Effect community, and we're excited to have you on board!

#Content Update

Over the past few weeks, many of you have been asking, and the time has finally come!

We've begun to release the talks from our speakers at the Effect Days Conference, and there's no better place to start than with Johannes Schickling's outstanding Opening Keynote! This video swiftly garnered massive attention on YouTube, and we're re-sharing it here for those who might have overlooked it:

Remember, this is just the beginning! Stay tuned by following us on YouTube and X for more must-see content ahead.

Moving on, our community member Milad has created a video demonstrating how to sign for 'Effect' in sign language. We're immensely grateful for Milad's ongoing support! If you also have a sign for 'Effect,' feel free to share it with us or drop a comment on Milad's post on X.

Just a reminder for our French-speaking audience: the first ever Effect Paris Meetup will land in April! Thanks to Evryg team, Jean-Baptiste Musso and Antoine Coulon for organizing the event.

#Closing Notes

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 new format. Feel free to share your thoughts, and we'll do our best to tailor it to the needs of our community.

The Effect Community Team