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chat
- Lunatic is an Erlang-inspired runtime for WebAssembly
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Charm β tools to make the command line glamorous
TUIs over ssh/telnet can be a lot of fun. Especially in cases where multiple people can interact with each other on the server. It simplifies the programming model as you only have one state on the backend that you render to multiple connections. Syncing up everyone becomes trivial. You can also use some React concepts, like rendering a virtual TUI and sending just the right set of minimal escape sequences back to the user to bring their display up to date.
A few months ago I implemented a telnet chat server[0] for fun and it was surprisingly easy to do so. Even by using a wasm vm that I was still working on at the same time.
[0]: https://github.com/lunatic-solutions/chat
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Launch HN: Lunatic (YC W21) β An Erlang Inspired WebAssembly Platform
We are investing a lot of effort into making Lunatic feel native to the particular language and ecosystem. If you look at the Rust chat server we built in Lunatic (https://github.com/lunatic-solutions/chat), it fully integrates with cargo. You just run your typical βcargo runβ command, it will compile the app to wasm and use lunatic to run it. If you want to run your test, you can just do βcargo testβ.
wasm-bindgen is necessary only because itβs really hard right now to merge the wasm world and the JS one in the browser. We have the advantage here of staying out of the browser.
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How I built a telnet chat server in 2021 with WebAssembly
It took me around a week to build it with Rust + Lunatic and you can check out the code here. If you would like to try it out you can connect to it with:
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The Stakker actor runtime: Beyond "Go++"
Recently I implemented a command line chat server in Rust using an actor framework. I model each TCP connection as an actor.
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I built a telnet chat server with WebAssembly
Hi HN,
I'm working on an Erlang inspired WebAssembly runtime for the backend[0]. Recently I added TCP support and was looking for apps I could build with it. I ended up building a telnet line chat app. It was a great dogfooding experience and has a nice retro feel to it.
You can access the US server with:
> telnet lunatic.chat
or the EU one with:
> telnet eu.lunatic.chat
Pick the one closer to you, as all the rendering is done on the backend and lower latency will mean better UX.
The server is open source[1] and written in Rust. The Rust code is then compiled to WebAssembly and runs on top of Lunatic. Each connection runs in a separate (lightweight) process, has it's own state and sends just a diff of esc-sequences back to the terminal to bring it up to date with the current render buffer. Everything is deployed to an ARM Linux box.
[0]: https://github.com/lunatic-solutions/lunatic
[1]: https://github.com/lunatic-solutions/chat
- WebAssembly Powered Telnet Chat
- Lunatic.chat β A WebAssembly powered telnet chat
- A telnet chat server powered by WebAssembly
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telnet lunatic.chat β A chat server for the terminal
The server is open source and written in Rust. The Rust code is then compiled to WebAssembly and runs on top of Lunatic. Each connection runs in a separate (lightweight) process, has it's own state and sends just a diff of esc-sequences back to the terminal to bring it up to date with the current render buffer. Everything is deployed to an ARM Linux box.
lipgloss
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When creating console based applications how do you replicate the following realtime updates:
I recommend looking at the charm libraries. Lip gloss https://github.com/charmbracelet/lipgloss can provide the styling and bubble tea can handle the screen updates and framework https://github.com/charmbracelet/bubbletea there is a premade progress bar component in bubbles library. https://github.com/charmbracelet/bubbles
- Glamorous tables with Go
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A Java library to work with the ANSI OSC52 terminal sequence.
I saw https://github.com/charmbracelet/lipgloss and was wondering if there is anything equivalent in the JVM ecosystem. I couldn't find anything so I started crawling its deps tree and reimplementing to fall asleep at night.
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Portal - a modern file transfer utility πβ¨
nhooyr/websocket, shollz/pake, charmbracelet/bubbles, charmbracelet/bubbletea, charmbracelet/lipgloss, muesli/reflow, klauspost/pgzip and many, many more.
- toolman.org/terminal/decor
- Equivalent to Pythons Rich?
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GUI brain tries to learn shell scripting
Off the top of my head i am thinking of charmbracelet/lipgloss but I don't know if its the best suited to my use case.
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Destroy command for zpools, datasets and snapshots
Or, quit worrying about how to fix every utility ever, and just make a nice-looking ZFS TUI with "Are you sure?" boxes and progress bars, using Lip Gloss. That kind of thinking has led to about 50 offshoots of the top utility. (Nothing wrong with that. Long may they all run!)
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Powerful template for CLI projects in Go πΉ
Predefined colors for lipgloss
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I built my first CLI tool to help me look up HTTP status codes!
Yes i've seen the centered text. Take a look at lipglossif you don't mind adding dependencies, they make the styling much more easier in my opinion.
What are some alternatives?
meetings - WebAssembly meetings (VC or in-person), agendas, and notes
bubbletea - A powerful little TUI framework π
lunatic - Lunatic is an Erlang-inspired runtime for WebAssembly
pterm - β¨ #PTerm is a modern Go module to easily beautify console output. Featuring charts, progressbars, tables, trees, text input, select menus and much more π It's completely configurable and 100% cross-platform compatible.
chrono - Date and time library for Rust
protoactor-go - Proto Actor - Ultra fast distributed actors for Go, C# and Java/Kotlin
embly - Attempt at building an opinionated webassembly runtime for web services
charm - The Charm Tool and Library π
lumen - An alternative BEAM implementation, designed for WebAssembly
rich - Rich is a Python library for rich text and beautiful formatting in the terminal.
mapscii - πΊ MapSCII is a Braille & ASCII world map renderer for your console - enter => telnet mapscii.me <= on Mac (brew install telnet) and Linux, connect with PuTTY on Windows
gum - A tool for glamorous shell scripts π