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jakelazarofflast Thursday at 10:15 PM4 repliesview on HN

Hey HN! I'm the developer at Jamsocket who made this. In case you're not familiar with Yjs, it's a CRDT library for building collaborative and local-first apps.

The thing is, if you're not used to working with distributed state there's definitely a learning curve. Even simple things like incrementing a counter — the "hello world" of JavaScript framework demos — get tricky when dealing with multiple clients. Worse, a lot of tutorials are just like "install this library and text editor integration and boom you have an app", which doesn't give you a good mental model for what's actually happening.

So we made Learn Yjs! It's an interactive Yjs tutorial. I wanted it to be really intuitive for people just getting their feet wet with local-first development, so there are lots of explorable demos and coding exercises. The idea is to use interactive examples to build an understanding from the ground up.

Hope you like it :)


Replies

KaiMagnusyesterday at 7:22 AM

> "install this library and text editor integration and boom you have an app", which doesn't give you a good mental model for what's actually happening.

I was interested in working with CRDTs and collaboration in general for a while now and this has been the biggest issue whenever I tried to get into it. Websockets also seem a bit harder to find (free) hosting for.

Btw, your other tutorials on CRDTs were also a great help.

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santa_boyyesterday at 2:40 AM

I am just looking at this but quick question. Is there an example for building a local-first app? Also, I working with plain vanilla HTML & JS and Alpine. Can this be used in my apps?

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adeptimayesterday at 7:01 AM

Thank you. Keep going. Very good topic to expand

nhatcheryesterday at 12:23 AM

Woah! Beautifully done! I wonder if I will finally understand CRDT with this. Will go through it over the weekend.

Congratulations!