What is Babel? And SWC?

• Acorn

  13 10,215 7.8 JavaScript

  A small, fast, JavaScript-based JavaScript parser

  

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.

• swc

  139 29,952 9.9 Rust

  Rust-based platform for the Web

  

SWC is 20x faster than Babel on a single thread and 70x faster on four cores. - SWC.js

• SurveyJS

  surveyjs.io sponsored

  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• babylon

  1 1,711 10.0 JavaScript

  Discontinued PSA: moved into babel/babel as @babel/parser -->

  

Parsing: A parser (Babylon. How fitting that Babel has a Babylon) reads the code and converts it to an Abstract Syntax Tree (AST)

• caniuse

  388 5,499 9.5 JavaScript

  Raw browser/feature support data from caniuse.com

You can always search caniuse.com to see who supports what. For example, if you search for Optional chaining operator, you will get the following Christmas-ish color coded table:

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