Thanks for coming to my therapy session.

You can find the slides here.

A video recording of the presentation will be available shortly.

This repository is intended to be used with Bun and Docker. Optionally, if you are a happy Nix user, you can use the included setup in this repository.

After ensuring that bun is installed, it's time to pull in the package dependencies of these examples:

bun install

This repository includes a minimal complementary observability infrastructure stack featuring:

• Grafana (for metrics & traces visualisation): http://localhost:3030
• Tempo (for tracing)
• Prometheus (for metrics)
• OpenTelemetry Collector (for receiving & forwarding traces & metrics)

This is not required to run any of the examples. However, it's highly encouraged if you want to explore some of the observability features highlighted in the Effect example application.

In order to spin up these infrastructure components, make sure that docker and docker compose are available and functional, then run:

docker compose up

Grafana should now be available at http://localhost:3030.

The non-Effect code examples can be found here.

Each example is executable. Simply run them like this:

bun src/presentation/without-effect/01-no-concurrency.ts

The (very) simple Effect introduction code can be found here.

Each example is executable. Simply run them like this:

bun src/presentation/effect-intro/01-number-generator.ts

Feel free to play around & experiment with the example code and see what happens! The best way to learn is to get your hands dirty :-).

The Effect APIs are highly discoverable by design. Code auto-completion is your friend. The types will guide you.

You can find the Effect version of the HackerNews document scraper application here.

If you just want to run it, go ahead:

bun src/program/Main.ts

This will download up to 10.000 documents from the HackerNews API, print them on the console and gather some metrics & shallow traces whilst doing so.

If your observability stack is up & running, you should now start to see metrics & traces appearing in Grafana.

Play around with it and experiment a little bit!

Welcome to Effect, a powerful TypeScript framework that provides a fully-fledged functional effect system with a rich standard library.

For detailed information and usage examples, please visit the Effect website.

To get started with Effect, watch our introductory video on YouTube. This video provides an overview of Effect and its key features, making it a great starting point for newcomers:

Join our vibrant community on Discord to interact with fellow developers, ask questions, and share your experiences. Here's the invite link to ourDiscord server: Join Effect's Discord Community.