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CodeRabbit
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InfluxDB
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NOTE:
The number of mentions on this list indicates mentions on common posts plus user suggested alternatives.
Hence, a higher number means a better peggy alternative or higher similarity.
peggy discussion
peggy reviews and mentions
Posts with mentions or reviews of peggy.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2025-02-11.
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Ohm: A user-friendly parsing toolkit for JavaScript and TypeScript
I am jealous of kids these days learning the theory of parsing. There are so many great resources out there! Ohm in particular looks great, attention to detail, care for the theory. Makes me wish I had a project to try it out.
I am a big fan of PEG parsers. They do come with their set issues and difficulties but I always found them great to work with. My to go tool (also a PEG parser similar to Ohm) used to be pegjs now https://peggyjs.org/
When I needed speed, or a more classical take, I would use jison. But I think today I would have to find a good reason not to build a hand made parser.
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Building a Stripe-like Search Language from Scratch
After deciding on the language specification, we proceeded to define and generate the grammar. We settled on using Peggy.js, which simplifies the generation of a parser from a grammar. To initiate, I utilized GitHub Copilot to draft the initial code.
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Taking LLMs to (code) town: parsing robots.txt featuring RFC 9309
Another potential solution would involve parsing the robots.txt file using a parser generated with Peggy (a modern parser generator), based on the RFCs’ Augmented Backus-Naur Form (ABNF) syntax description. This method would ensure that all aspects of the specification are covered. While I have yet to try this approach, it represents another avenue for getting to the solution.
- Peggy: Parser Generator for JavaScript
- GitHub - peggyjs/peggy: Peggy: Parser generator for JavaScript
- Peggy: Maintained fork of PEG.js parser generator
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Creating a custom parser with PEGJS
The PEG.js project got taken over by a new maintainer who locked everyone else out, never shipped a release, and then ignored repeated requests to transfer the project back to the community. So the community forked it to a new project - Peggy, which is where ongoing development happens: https://github.com/peggyjs/peggy
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How to make your own programming language in JavaScript
NOTE: The original PEG.js project is not maintained anymore, but there is a new fork, Peggy that is maintained and it's backward compatible with PEG.js so it will be easy to switch.
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Show HN: DTL: a language and JavaScript lib to transform and manipulate data
Thanks. Yes, DTL's core textual syntax is described with PEG. I make use of the Peggy (https://peggyjs.org/) PEG processor to build up the AST that is used to actually process DTL.
There are C based PEG processors, which I've looked at once or twice also, but I haven't sat down to try to convert it. Mostly out of a desire to get the existing module to work well. A working module for one language is better than a partially working module for multiple. :P
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A note from our sponsor - CodeRabbit
coderabbit.ai | 30 Apr 2025
Stats
Basic peggy repo stats
11
1,048
8.9
4 days ago
peggyjs/peggy is an open source project licensed under MIT License which is an OSI approved license.
The primary programming language of peggy is JavaScript.
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