peritext
threlte
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peritext | threlte | |
---|---|---|
20 | 22 | |
615 | 1,812 | |
2.6% | 6.8% | |
0.0 | 9.9 | |
over 1 year ago | 2 days ago | |
TypeScript | Svelte | |
MIT License | MIT License |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
peritext
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Cola: A text CRDT for real-time collaborative editing
This doesn’t appear to support rich text formatting ranges like bold, italic, etc - unless I’m missing something in the API. AFAIK Peritext is still the state of the art in rich text CRDT algorithms https://www.inkandswitch.com/peritext/
I’d love to see this build the rich text stuff from the Peritext algorithm.
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The Cloud Is a Prison. Can the Local-First Software Movement Set Us Free?
The work Ink & Switch (unaffiliated) do has been an inspiration to my with regard to local-first and decentralized software: https://www.inkandswitch.com
They have a quasi-manifesto on local-first (https://www.inkandswitch.com/local-first/) and have published the best rich text CRDT around, Peritext: https://www.inkandswitch.com/peritext/
Lots of interesting work happening in this space.
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Figma Is a File Editor
Take a look at https://automerge.org/ and the stack those folks are building. You're exactly right that it's a difficult balance (specifically the trick is proving commutativity for the domain-specific data of your application). But automerge (and then https://github.com/inkandswitch/peritext) show it's at least possible. Good stuff.
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Ask HN: What is new in Algorithms / Data Structures these days?
Yes - The BFT problem only matters when you have Byzantine actors. But I think users deserve and expect the system to be reasonably well behaved and predictable in all situations. Anything publically writable, for example, needs BFT resilience. Or any video game.
As for the prosemirror problem, I assume you’re talking about weird merges from users putting markdown in a text crdt? You’re totally right - this is a problem. Text CRDTs treat documents as a simple sequence of characters. And that confuses a lot of structured formats. For example, if two users concurrently bold the same word, the system should see that users agree that it should be bolded. But if that “bold” intent is translated into “insert double asterisks here and here”, you end up with 4 asterisks before and after the text, and that confused markdown parsers. The problem is that a text crdt doesn’t understand markdown.
JSON editing has similar problems. I’ve heard of plenty of people over the years putting json text into a text crdt, only to find that when concurrent edits happen, the json grows parse errors. Eg if two users concurrently insert “a” and “b” into an empty list. The result is [“a””b”] which can’t be parsed.
The answer to both of these problems is to use CRDTs which understand the shape of your data structure. Eg, use a json OT/crdt system for json data (like sharedb or automerge). Likewise, if the user is editing rich text in prosemirror then you want a rich text crdt like peritext. Rich text CRDTs add the concept of annotations - so if two users bold overlapping regions of text, the crdt understands that the result should be that the entire region is bolded. And that can be translated back to markdown if you want.
The ink & switch people did a great write up of how this sort of crdt works here: https://www.inkandswitch.com/peritext/
- Edge cases in collaborative rich text editing (2021)
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You might not need a CRDT
> I'm looking out for practical CRDT ideas that works well with richtext.
Have you seen Peritext from Ink & Switch? https://www.inkandswitch.com/peritext/ It's relatively new, but is a CRDT aimed at rich text!
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CRDTs make multiplayer text editing part of Zed's DNA
To put it in a different perspective, plain text editing has well-solved CRDT patterns. But, semantic data-structures like rich-text or syntax trees is what's tricky and has unsolved challenges.
Peritext[1] is the only one that came close to solving rich-text, but even that one left out important aspect of rich-text editing like handling list & table operations as "work to be done later".
For people interested on why it's difficult to build CRDTs for richtext, here's a piece I wrote a year back: https://writer.zohopublic.com/writer/published/grcwy5c699d67...
Related HN discussion: https://news.ycombinator.com/item?id=29433896
[1] https://github.com/inkandswitch/peritext
- Peritext – A CRDT for Rich-Text Collaboration
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Evan Wallace CRDT Algorithms
Anyone unsure of what a CRDT is, this is the perfect intro: https://www.inkandswitch.com/peritext/
The two most widely used CRDT implementations (combining JSON like general purpose types and rich text editing types) are:
- Automerge https://github.com/automerge/automerge
- Yjs https://github.com/yjs/yjs
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Is Svelte capable of a Google Docs & Sheets clone?
Svelte is, but that is your smallest problem. You want to look into CRDTs (conflict-free replicated data types) to offer true (offline) collaboration. A popular JS library to solve this complex problem is called [automerge](Conflict-free replicated data type). A rather recent development in that area specifically for text-based content is Peritext. Also check out this interactive tutorial about CRDTs.
threlte
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Mario meets Pareto: multi-objective optimization of Mario Kart builds
more specifically it's using the svelte wrapper of three.js called Threlte: https://threlte.xyz/
- Threlte: A Three.js component library for Svelte
- A Three.js component library for Svelte
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What is your experience with JavaScript libraries for 3D graphics?
Three.js is great when there is a layer between me and it's API. Been playing with https://threlte.xyz/ and really enjoying it.
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Is there a way to improve the performance of this visual element in Svelte?
Maybe try https://threlte.xyz/
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threejs and interactive meshes
Now this is a very high level overview and a lot of really important stuff is missing. Things like event propagation, pointermissed events, different event targets, a super clean syntax and more is all implemented in Threlte 6's interactivity plugin. Check out the code here.
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SvelteKit GPT-4 Plug-in RFC
GPT-4 is a fantastic tool for coding, really looking forward to using it with the latest Svelte docs. Perhaps consider adding the documentation for Threlte?
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When building scenes do you use any visual tool or just do it all in code?
) with complex functionality, since the app needed a graphics pipeline and I wanted to write one up myself. The next page I made did not need a pipeline, so I opted to use Threlte (a Svelte version of react-three-fiber) to make the code simpler to write and easier to maintain. If a scene you want to create has a lot of different meshes, materials, animations, etc. you might be best off using Blender to get it looking perfect. You can export from Blender as .gltf files which can be imported into Three. If you want a more specialized solution, I'd need to know your use case a little better. How are you building the scenes?
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I made a 3D Chess board integrated with Lichess using Svelte/Threlte
Hey, awesome work! Check out gltf.report for a quick and easy tool that can resize textures, prune objects and weld/simplify geometry. I’m not sure what Threlte version you’re using, but starting from Threlte 6 which is coming in the next weeks we’re recommending @threlte/gltf for the best possible gltf workflow. Check out our Discord if you need any help!
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Question about 3D timeline carousel (from Dior site)
Hey! Check out Threlte, it might be what you’re looking for. Also check out our Discord, someone posted a 3D scrollytelling Starter :)
What are some alternatives?
automerge - A JSON-like data structure (a CRDT) that can be modified concurrently by different users, and merged again automatically.
flowbite-svelte - Official Svelte components built for Flowbite and Tailwind CSS
y-crdt - Rust port of Yjs
three-graces-svelte-cubed
dokieli - :bulb: dokieli is a clientside editor for decentralised article publishing, annotations and social interactions
kit-docs - Documentation integration for SvelteKit.
automerge-rs - Rust implementation of automerge [Moved to: https://github.com/automerge/automerge]
threejs-volumetric-spotlight - Volumetric spotlight with three.js
yjs - Shared data types for building collaborative software
rapier - 2D and 3D physics engines focused on performance.
rust-crdt - a collection of well-tested, serializable CRDTs for Rust
three-minifier - Minify THREE.js