TypeScript Parsing

Open-source TypeScript projects categorized as Parsing | Edit details

Top 6 TypeScript Parsing Projects

  • GitHub repo PostCSS

    Transforming styles with JS plugins

    Project mention: Intro to ViteJS | dev.to | 2021-09-15

    Under the hood, Vite uses esbuild. For CSS, it can handle PostCSS if you add a config for it, or css-modules if you add .module.css files, or sass. It will also make liberal use of the import.meta to add some sugar methods like glob imports or adding environment variables. You can switch the build to use terser and get a slightly smaller build, but it is a little slower. In my regular usage, I don't notice a huge difference, so I leave esbuild as default.

  • GitHub repo esprima

    ECMAScript parsing infrastructure for multipurpose analysis

    Project mention: We Switched from Webpack to Vite | news.ycombinator.com | 2021-04-28

    The thread was originally about CRA vs Vite size on disk (or implicitly, if we're applying it to real world applications, network cost in CI job startup times). And like I said, surrogate pairs don't apply to ASCII.

    See this[0] for reference. Note how the first byte must fall within a certain range in order to signal being a surrogate pair. This fact is taken advantage of by JS parsers to make parsing of ASCII code faster by special casing that range, since checking for a valid character in the entire unicode range is quite a bit more expensive[1].

    [0] https://github.com/jquery/esprima/blob/0911ad869928fd218371b...

    [1] https://github.com/jquery/esprima/blob/0911ad869928fd218371b...

  • Syncfusion

    Build stunning web applications quickly using Syncfusion JavaScript UI controls.. The Syncfusion JavaScript suite offers more than 65 cross-platform, responsive, and lightweight JS/HTML5 UI controls for building modern web applications.

  • GitHub repo Chevrotain

    Parser Building Toolkit for JavaScript

    Project mention: Why are you building a programming language? | reddit.com/r/ProgrammingLanguages | 2021-09-05

    I don't think I'll have time to make one any time soon, unfortunately. My original plan was to write a compiler in TypeScript using Chevrotain, and see if it's possible to compile down to TypeScript's AST and feed that into its own compiler programmatically. Basically piggybacking on Microsoft's hard work (work smart, not hard). I don't know if it's possible, but it's what I'd try first.

  • GitHub repo kataw

    An 100% spec compliant ES2022 JavaScript toolchain

    Project mention: Rome will be written in Rust | news.ycombinator.com | 2021-09-21

    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

  • GitHub repo parsec 🌌

    🌌 Tiniest body parser in the universe. Built for modern Node.js

    Project mention: Using Redis Pub/Sub with Node.js | dev.to | 2021-08-30

    The tinnyhttp framework doesn't come with a body parser already integrated so I'll install milliparsec, in addition to being lighter than the famous body-parser, it's asynchronous and faster.

  • GitHub repo fefe

    Validate, sanitize and transform values with proper TypeScript types and zero dependencies.

    Project mention: Parse, Don't Validate (2019) | news.ycombinator.com | 2021-06-26
NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020). The latest post mention was on 2021-09-21.


What are some of the best open-source Parsing projects in TypeScript? This list will help you:

Project Stars
1 PostCSS 25,142
2 esprima 6,297
3 Chevrotain 1,726
4 kataw 280
5 parsec 🌌 97
6 fefe 32
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