estree VS kataw

Compare estree vs kataw and see what are their differences.

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estree kataw
8 19
5,046 331
1.3% 0.9%
2.8 0.0
15 days ago over 1 year ago
TypeScript
GNU General Public License v3.0 or later ISC 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.

estree

Posts with mentions or reviews of estree. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2023-03-30.
  • ESLint Understand By Doing Part 1: Abstract Syntax Trees
    2 projects | dev.to | 30 Mar 2023
    ESLint's AST format, ESTree, would represent this line of code as:
  • Eglot has landed on master: Emacs now has a built-in LSP client
    10 projects | news.ycombinator.com | 23 Oct 2022
    That was a super interesting link, thank you.

    For the ontological problem, I presume you're referring to how there are so many differing ideas of how to represent ASTs (apologies for mixing languages, these URLs were just handy):

    * https://lisperator.net/uglifyjs/ast#nodes

    * https://github.com/estree/estree#the-estree-spec

    * ... likely others

    which makes it hard for ls1 to ask ls2 about "the for-of iteration variable Node" because ls2 could be using UglifyJS or ESTree or their own(!) AST nomenclature?

    And all of this is made worse by (e.g.) Java1.3 versus Java19 because languages are rarely static

  • Statements vs. Expressions
    2 projects | news.ycombinator.com | 14 Jul 2022
    I find it better to actually look at the AST for javascript.

    These are expressions:

    https://github.com/estree/estree/blob/master/es5.md#expressi...

    These are statements:

    https://github.com/estree/estree/blob/master/es5.md#statemen...

    I guess the confusing part for many is how an expression can also be a statement. But if you look at the ExpressionStatement you see that an expression is not also a statement. It's just the wrapper statement!

  • A technical tale of NodeSecure - Chapter 2
    7 projects | dev.to | 6 Jun 2022
    When I started the NodeSecure project I had almost no experience 🐤 with AST (Abstract Syntax Tree). My first time was on the SlimIO project to generate codes dynamically with the astring package (and I had also looked at the ESTree specification).
  • Show HN: Monocle – bidirectional code generation library
    10 projects | news.ycombinator.com | 12 Apr 2022
  • Go is the future of Frontend infrastructure
    5 projects | dev.to | 1 Dec 2021
    ESTree compatible output, AST explorer on WASM
  • Introducing GraphQL-ESLint!
    2 projects | dev.to | 29 Jul 2021
    The parser we wrote transforms the GraphQL AST into ESTree structure, so it allows you to travel the GraphQL AST tree easily.
  • Revealing the magic of AST by writing babel plugins
    2 projects | dev.to | 5 Mar 2021
    For espree parser(the one eslint uses) we can refer here Eslint AST Node Types

kataw

Posts with mentions or reviews of kataw. We have used some of these posts to build our list of alternatives and similar projects. The last one was on 2021-09-21.
  • We've been lied to: JavaScript is very fast
    1 project | /r/javascript | 12 Oct 2021
    It then builds on the assumption that all of Javascript performance scales linearly based on the results of that fishy benchmark. Never mind that in C you can stack allocate, or use arena allocators, or use a million of other tricks, where in JS, once you write {}, you got a heap allocation that you don't have any control over (and if you think this doesn't matter, this is one of the reasons why esbuild is so much faster than babel, or heck even kataw, the fastest JS parsing toolkit I'm aware of).
  • Rome will be written in Rust
    7 projects | news.ycombinator.com | 21 Sep 2021
    esbuild is the current darling leading the pack, but there are also various other projects in the space (swc[0] is written in Rust, fjb[1] is written in C, bun[2] is written in zig, leveraging JavascriptCore's engine).

    The most significant performance-oriented effort in this space still leveraging JS that I know of is kataw[3], and while that's quite fast compared to babel, it's still within an order of magnitude from babel. Kataw itself is a CST-based implementation that was created to outperform seafox (a AST-based parser by the same developer).

    Babel gained popularity due to the crazy amount of churn in grammar over the past few years, but more and more I think the dust is settling, and flexibility is no longer the name of the game, making an AST-based implementation less appealing. The Rome team must be feeling the heat if the data structure design choices are being informed by performance. I highly doubt someone will be able to compete in performance using a JS implementation in today's landscape.

    [0] https://github.com/swc-project/swc

    [1] https://github.com/sebbekarlsson/fjb

    [2] https://bun.sh/

    [3] https://github.com/kataw/kataw

  • An 100% spec compliant ES2022 Javascript toolchain
    2 projects | /r/javascript | 18 Jun 2021
    Kataw is a *work in progress* javascript toolchain with high focus on performance, and it's main goal is to unify functionality that has previously been separate tools. It's core is an ECMAScript friendly CST that allows you to parse `ECMAScript® 2022 (ECMA-262 12th Edition) language specification`. Each CST node contains several properties, and the `flags` property contains the CST info. The CST info can be extracted from the CST node through public API methods. Click [here](https://github.com/kataw/kataw/tree/main/src/parser#public-api-methods-to-extract-info-from-cst-nodes) for a complete list over all the public API methods. Many of these APIs have the advantage that they allow you to "retrieve" info that is not otherwise available with a standard AST parser. One example is that you only need to use `kataw.isStatementNode` to find out if the current CST node is a statement node. With an AST parser you must use a `switch statement` with 60 `switch cases`. Another example is how easy it is to find out if a keyword node contains an `escaped keyword`. You only need to use `kataw.hasUnicodeEscape`. You can narrow this down further if you use `kataw.isChildLess`. A keyword doesn't have any child nodes. A third benefit with this CST parser is that it is running in `recovery mode` by `default` and can be used in any editor. A build-in diagnostic system reports diagnostics if an `error handler` have been used. The diagnostics are dynamic. It means all the diagnostics are informative, and they will will change based on the context you are parsing in. The diagnostics have been designed like this so you can quickly understand what the problem is and correct it. These features used together gives you more options to adjust, modify and customize the CST tree compared to a regular AST parser and you can also write fewer code lines and at the same time experience insane performance.
  • About An 100% spec compliant ES2022 Javascript toolchain
    1 project | /r/programming | 18 Jun 2021
  • Kataw - An 100% spec compliant ES2022 Javascript toolchain
    1 project | /r/programming | 14 Jun 2021
    1 project | /r/programming | 14 Jun 2021
  • ECMAScript2022 CST parser with error recovery and types
    1 project | news.ycombinator.com | 14 Jun 2021
  • JavaScript CST Parser
    1 project | news.ycombinator.com | 9 Jun 2021
  • ECMAScript2022 CST parser with error recovery
    1 project | news.ycombinator.com | 3 Jun 2021
  • kataw/kataw An insane fast Javascript toolchain.
    4 projects | /r/programming | 30 May 2021

What are some alternatives?

When comparing estree and kataw you can also consider the following projects:

esprima - ECMAScript parsing infrastructure for multipurpose analysis

esbuild - An extremely fast bundler for the web

babel-parser

swc - Rust-based platform for the Web

escodegen - ECMAScript code generator

fjb - fast javascript bundler :package:

Acorn - A small, fast, JavaScript-based JavaScript parser

cli - CLI for swc

babel-handbook - :blue_book: A guided handbook on how to use Babel and how to create plugins for Babel.

Node-Estree - Complete and compliant ESTree spec implementation in TypeScript

graphql-eslint - ESLint parser, plugin and set rules for GraphQL (for schema and operations). Easily customizable with custom rules. Integrates with IDEs and modern GraphQL tools.

binjs-ref - Reference implementation for the JavaScript Binary AST format

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