lezer vs generator

lezer

Dev utils and issues for the Lezer core packages (by lezer-parser)

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generator

Parser generator for the lezer incremental parser (by lezer-parser)

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lezer		generator
	Project
2	Mentions	1
29	Stars	140
-	Growth	6.4%
4.6	Activity	7.0
4 months ago	Latest Commit	6 days ago
JavaScript	Language	TypeScript
MIT License	License	MIT License

The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.

lezer

Posts with mentions or reviews of lezer. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-24.

Lezer: A Parsing System for CodeMirror, Inspired by Tree-Sitter
9 projects | news.ycombinator.com | 24 Mar 2024

I attempted to use this but was disheartened but the fact that it doesn't statically type node names. Tree Sitter doesn't either but it has much more of an excuse given that it targets C.
https://github.com/lezer-parser/lezer/issues/8
The dev seems mildly hostile to outside involvement too, so I moved on. These days I use Chumsky which is Rust rather than Typescript, but also way more awesome, if you can deal with the often incomprehensible compilation errors at least!
https://github.com/zesterer/chumsky
Parsing in JavaScript: all the tools and libraries you can use
3 projects | news.ycombinator.com | 24 May 2021

Treesitter is not JS (although the Wasm version can be used from JS). Lezer (https://github.com/lezer-parser/lezer) is similar (it was inspired by Treesitter) and is written in TS.

generator

Posts with mentions or reviews of generator. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2024-03-24.

Lezer: A Parsing System for CodeMirror, Inspired by Tree-Sitter
9 projects | news.ycombinator.com | 24 Mar 2024

Yes it's unsolicited "advice" that shows an uncooperative attitude IMO. You can say "I don't want to do that" in a nice way without being patronising. If you look at the other closed MRs you'll see a similar attitude.
E.g. here (I'd forgotten about this actually): https://github.com/lezer-parser/generator/pull/6#issuecommen...
Here https://github.com/lezer-parser/lr/pull/64#issuecomment-1802...
It's nothing major but just emanates "difficult to work with" vibes so I didn't want to spend my time working with a project like that (looks like not many other people do either).