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OhmJS @ohmjs.org · 28d

Hey everyone, just FYI:

After investigating, we do *not* believe that ohm-js, or any other package under the @ ohmjs namespace, is affected by the Shai-Hulud worm or any of the recent npm supply chain attacks.

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OhmJS @ohmjs.org · Aug 5

Any Ohm fans who want to get a taste of low-level programming?

Get 25% off the only book in the world* that will teach you WebAssembly with Ohm!

(*So far.)

WebAssembly from the Ground Up @wasmgroundup.com · Aug 5

The summer holidays just started here in southern Germany.

So, it's time for a ☀️ SUMMER SALE ☀️ —

Use the code SUMMER25 for a 25% discount on the book until Sept 15: wasmgroundup.com

WebAssembly from the Ground Up

A book about WebAssembly — learn Wasm by building a simple compiler in JavaScript.

wasmgroundup.com

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OhmJS @ohmjs.org · Jul 28

First new release of Ohm in…eh *pulls at shirt collar* quite a while.

v17.2.1 is here…one small l'il feature and a teeny weeny fix: github.com/ohmjs/ohm/re...

Also pushed v2.0.1 of @ohm-js/cli.

Release Ohm v17.2.1 · ohmjs/ohm

Browser bundles: ohm.js • ohm.min.js New features: [456b540]: asIteration() is now support for iter nodes (returns the node itself) Fixes [59b17ec]: Expose Matcher’s grammar prop in TS types

github.com

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Reposted by OhmJS

Alex Warth @alexwarth.bsky.social · Jul 25

For more info, see: www.inkandswitch.com/ambsheets/no...

Ambsheets: Spreadsheets for exploring scenarios

Ambsheets is a research project about new kinds of spreadsheets for exploring possibility spaces and making better decisions.

www.inkandswitch.com

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Reposted by OhmJS

Patrick Dubroy @dubroy.com · Jul 25

Pretty pleased with the ergonomics of the Wasm (macro-)assembler in @ohmjs.org.

It's built on the low-level assembler lib we created for @wasmgroundup.com, but has some nice higher-level features, including labeled breaks. I'm particularly proud of the idea to put the block label at the end. 😊

A code screenshot showing a TypeScript/JavaScript function called ⁠wrapTerminalLike that generates WebAssembly (WASM) code. The code contains: • A function definition that takes a ⁠thunk parameter • Assembly code generation using an ⁠asm object with methods like ⁠block(), ⁠localSet(), ⁠break(), etc. • A ⁠break statement that references a label called ⁠'_success' (highlighted with a pink arrow and annotation "This...") • A label definition for ⁠'_success' at the bottom (highlighted with a red arrow and annotation "...goes here") • Additional assembly operations like ⁠newTerminalNodeWithSavedPos(), ⁠updateLocalFailurePos(), and ⁠setRet() The pink annotations with arrows illustrate the control flow relationship between the break statement and its corresponding label, showing how the break jumps to the ⁠'_success' label.

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OhmJS @ohmjs.org · Jul 17

You know about the Ohm Discord, right?

Great place to ask questions, get feedback on your grammars, and hang out with the some of the friendliest folks out there.

discord.gg/KwxY5gegRQ

Join the Ohm Land Discord Server!

Check out the Ohm Land community on Discord - hang out with 169 other members and enjoy free voice and text chat.

discord.gg

OhmJS @ohmjs.org · Jul 14

I'd also like to acknowledge the support from Adam Bouhenguel and Project Substrate (projectsubstrate.org), which provided the funding to build the initial MVP. 🙏

Without their support none of this would have been possible!

Project Overview

projectsubstrate.org

OhmJS @ohmjs.org · Jul 14

We're still looking for more sponsors! If you or your company can help fund this effort: github.com/sponsors/pd...

Since 2017, my work on Ohm has been unpaid. Your sponsorship helps the project be sustainable, ensuring that I can maintain and improve Ohm for many years to come!

Sponsor @pdubroy on GitHub Sponsors

I'm the lead developer of Ohm (ohmjs.org), a user-friendly parsing toolkit for JavaScript and TypeScript. I also created the Ohm Editor, and the interactive visualization for understanding and ...

github.com

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OhmJS @ohmjs.org · Jul 14

Thanks to a generous contribution from Shopify, we've secured enough funding to make further progress towards production-ready Ohm+WebAssembly support! github.com/ohmjs/ohm/i...

Thank you Shopify for funding open source. ❤️

Production-ready WebAssembly support · Issue #511 · ohmjs/ohm

#503 covers the initial investigation into WebAssembly. Due to funding limitations, that work was scoped to a 6-week effort. This issue is about the next phase: productionizing the current prototyp...

github.com

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OhmJS @ohmjs.org · Jul 10

A few different Ink & Switch projects have used Ohm…here's the latest one.

From @alexwarth.bsky.social (co-creator of Ohm) and @geoffreylitt.com (who made Wildcard, one of our all-time favourite Ohm-powered projects)

Alex Warth @alexwarth.bsky.social · Feb 4

What if a spreadsheet cell could hold multiple values at the same time?

That's the idea behind Ambsheets, a project I've been working on w/ @geoffreylitt.com at @inkandswitch.com. It's a new spreadsheet that makes it easier for you to explore many possibilities simultaneously.

1/2

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OhmJS @ohmjs.org · Jun 24

Outside of this specific funding need, if you get value from Ohm you should consider a recurring sponsorship: github.com/sponsors/pdu...

This keeps the project sustainable and ensures that I can continue to spend time maintaining and improving Ohm for everyone!

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OhmJS @ohmjs.org · Jun 23

We are seeking funding to make it possible to ship a production-ready version. (It's an estimated 8–10 more weeks of effort.)

If you or your company would benefit from the portability and performance improvements and could potentially help fund this work, please get in touch with @dubroy.com!

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OhmJS @ohmjs.org · Jun 23

Ever wanted to use Ohm from another language? Go, Python, Rust?

See the brand new, experimental support for compiling Ohm grammars to Wasm: github.com/ohmjs/ohm/d...

It wasn't the main goal, but it also appears to be a perf win — parsing is about 10x faster on real-world grammars (e.g. ES5).

A couple months ago, I started prototyping a new feature: the ability to compile an Ohm grammar to WebAssembly, so that it can be used from languages other than JS. You can find more background (use cases and implementation details) in #503. The MVP is complete, and this feature is now available for early testing (with some limitations). We're very interested to get feedback and hear what uses cases people have for this. Although it wasn't the main motivation for this work, early benchmarks are showing ~10x improvement in parse times. Take this with a grain of salt — since the implementation isn't yet complete, it's hard to know what the final performance will look like. But it looks like this will be a significant performance win for real-world grammars!

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OhmJS @ohmjs.org · Jun 16

One of the biggest production users of Ohm that we know of is Shopify.

They used Ohm in the Liquid HTML parser that powers their prettier plugin & VS Code language server — as well as the Shopify Admin's CodeMirror-based editor.

www.npmjs.com/package/@sh...

npm: @shopify/liquid-html-parser

Liquid HTML parser by Shopify. Latest version: 2.8.2, last published: 2 months ago. Start using @shopify/liquid-html-parser in your project by running `npm i @shopify/liquid-html-parser`. There are 8 other projects in the npm registry using @shopify/liquid-html-parser.

www.npmjs.com

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Reposted by OhmJS

Patrick Dubroy @dubroy.com · May 17

Working on a cheat sheet for @ohmjs.org grammars. wdyt?

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OhmJS @ohmjs.org · May 16

Making progress on the Wasm implementation — and encountering some interesting challenges!

Patrick Dubroy @dubroy.com · May 16

Ok ok this may not make a lot of sense but I am *extremely* happy to have gotten this code working!! So I feel compelled to share.

(And yes, I wrote my own macro-assembler for #wasm in JavaScript. That's how much fun I'm having, and yes I mean that sincerely.)

1/x

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Reposted by OhmJS

Patrick Dubroy @dubroy.com · May 2

Made some good progress on this! Follow along on the issue if you're interested: github.com/ohmjs/ohm/is...

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OhmJS @ohmjs.org · Apr 29

Hey folks, we had another Cloudflare ⇆ GitHub SSL issue which meant the web site was down for about an hour.

Thanks for @onlineornot.com we found out pretty quickly, and it should be fixed now!

And we'll be getting rid of Cloudflare so hopefully we'll be rid of this problem for good 🤞

Reposted by OhmJS

WebAssembly from the Ground Up @wasmgroundup.com · Apr 29

Wondering if the book is *practical*?

I'm currently using the helper library extracted from the book for a new @ohmjs.org feature which will allow you to compile Ohm grammars to Wasm.

This will make it possible to use Ohm grammars from Go, Python, etc.

Details here 👉 github.com/ohmjs/ohm/is...

Patrick Dubroy @dubroy.com · Apr 29

btw what I'm using here is the "assembler library" that we construct bit by bit in @wasmgroundup.com. It's also available as a standalone NPM package: www.npmjs.com/package/@was...

There's not yet much documentation (outside of the book), but we'll work on that soon!

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OhmJS @ohmjs.org · Apr 25

Excited to kick off some new Ohm work next week — adding the ability to compile an Ohm grammar to WebAssembly. See
github.com/ohmjs/ohm/i... if you're interested, and feel free to comment if you have opinions!

WebAssembly support · Issue #503 · ohmjs/ohm

Over the years we've had a few requests for a way to use Ohm from other languages — e.g. #348 mentions Dart, Rust, and Swift. Go and Python have also come up in private discussions. This propos...

github.com

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OhmJS @ohmjs.org · Mar 12

Very cool to learn that Ohm was used to create Gambu-Script, which is used to teach programming to over 90k students in Austria!

It's part of SchuBu, a free-to-use digital schoolbook: www.schubu.org/p768/progra...

An illustration explaining computer programming basics titled 'Sequence'. The top contains text explaining that a computer program is a set of instructions. Below is a cartoon illustration showing a purple robot sitting at a computer with a confused green monitor display. The robot is speaking in binary code (shown in a speech bubble), while the monitor shows question marks in a thought bubble. The scene includes bookshelves in the background. The caption reads 'Fig. 1 Learning languages pays off.'

An educational diagram explaining loops in programming using GamBu-Script. The image shows text explaining that loops are a way to handle repeated actions in programming, with two syntax examples: 'repeat x seconds [command]' and 'repeat x times [command]'. At the bottom, there's a code example in a red-bordered box showing 'right 100' followed by 'repeat 100 times left 1'.

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OhmJS @ohmjs.org · Mar 10

If you dig Ohm and are interested in WebAssembly, check out this book by @dubroy.com (co-creator of Ohm).

You'll learn Wasm (the instruction set and module format) by building a compiler for a small programming language.

It's also a great way to learn Ohm!

WebAssembly from the Ground Up @wasmgroundup.com · Mar 10

Excited to announce the official launch of our online book, WebAssembly from the Ground Up! 🎉

It's the book we wish we'd had 3 years ago.

No messing with tools and frameworks. It's a hands-on guide to the core of Wasm: the instruction set and module format.

Link below. 👇

Learn Wasm by building a simple compiler in JavaScript. No compiler expertise necessary. All the code is in the book; we'll take you through it step by step. Get your hands dirty and see for yourself what WebAssembly is all about.

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OhmJS @ohmjs.org · Feb 17

Anyone catch Ohm in the current edition of JavaScript Weekly? javascriptweekly.com/issues/723

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OhmJS @ohmjs.org · Jan 29

Should be fixed now, but please let us know if you still see any issues!

OhmJS @ohmjs.org · Jan 29

Just been told that ohmjs.org is currently down. Sorry about the disruption!

We're working on a fix, but in the meantime, if you need to access the docs you can find them here: github.com/ohmjs/ohm/t...

ohm/doc at main · ohmjs/ohm

A library and language for building parsers, interpreters, compilers, etc. - ohmjs/ohm

github.com

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