Monocle
Acorn
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| Monocle | Acorn | |
|---|---|---|
| 5 | 13 | |
| 1,630 | 10,215 | |
| 0.2% | 1.3% | |
| 8.2 | 7.8 | |
| 3 days ago | 9 days ago | |
| Scala | JavaScript | |
| 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.
Monocle
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Ref in cats-effect. When should I use it, and when should I not?
Without concurrency, using a Ref doesn't buy you anything over just using a var. If you want the benefits of immutability with an API that resembles mutability, you have to use something like Monocle.
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Show HN: Monocle – bidirectional code generation library
A very popular Scala optics library is also called Monocle. I’ve been a happy user for a few years:
https://github.com/optics-dev/Monocle
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Monocle 3 release candidate - a super useful and simple library for optics with poetic api
See example https://www.optics.dev/Monocle/
- Monocle 3.0.0-M1 is released for Scala 2.13 and Scala 3
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Monocle 3 Roadmap
We always have work to do, for example to define scalfix rules to automate the migration https://github.com/optics-dev/Monocle/issues/1001
Acorn
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Abstract Syntax Trees and Practical Applications in JavaScript
Why do we then have other JavaScript parsers like babel parser, swc parser, acorn, espree and the likes since JavaScript engines have their own internal parsers?
- Árvore de sintaxe abstrata, oque são e aonde vivem.
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Regex for any js string for representing an object or array containing any number of array or object?
If you're trying to determine if a string is valid Javascript then your best bet is to use a JS parser like Acorn. Trying to DIY parsing with just regex is a good way to end up incredibly frustrated.
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Code Art — abstract artworks for your creations
To render UI I use Svelte. To parse JS files I use Acorn JS in Web Worker.
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What is Babel? And SWC?
Behind Babel is created by an Australian developer Sebastian McKenzie and now consists a small team of contributors. Babel also makes uses a polyfill library called core-js, which in turn uses a JavaScript parser, acorn.
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🕶 What it takes to build a Static Analysis tool
At line 3, we import parseScript from meriyah which is a JavaScript parser (could have been babel, acorn, swc, etc doesn't matter for our use case as long as they correctly implement the spec).
- Acorn: A lightweight PaaS for Kubernertes, from Rancher founders
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[AskJS] What is your preferred tooling when working with JS ASTs?
A simple starting point is Acorn with estree-walker. Not sure if you'll need more advanced functionality but that pair has worked well for my usage. It's also the combo that Svelte uses internally.
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How do I edit an AST while parsing it?
https://github.com/acornjs/acorn For parsing the tree
- Show HN: Monocle – bidirectional code generation library
What are some alternatives?
Quicklens - Modify deeply nested case class fields
babel-parser
Shapeless - Generic programming for Scala
esprima - ECMAScript parsing infrastructure for multipurpose analysis
Chimney - Scala library for boilerplate-free, type-safe data transformations
cherow
cats - Lightweight, modular, and extensible library for functional programming.
Rocambole - Recursively walk and transform EcmaScript AST
Scalaz - Principled Functional Programming in Scala
jscodeshift - A JavaScript codemod toolkit.
Scala Graph - Graph for Scala is intended to provide basic graph functionality seamlessly fitting into the Scala Collection Library. Like the well known members of scala.collection, Graph for Scala is an in-memory graph library aiming at editing and traversing graphs, finding cycles etc. in a user-friendly way.
Babel (Formerly 6to5) - 🐠 Babel is a compiler for writing next generation JavaScript.