CoffeeScript

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Output—per 1M tokens

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About

CoffeeScript is ranked #1 of 28 in code transpilers on Inferse. It runs on API, Linux, macOS, Web, Windows.

Compared on code transpilers

Syntax-version conversion: Yescoffeescript.org
Intermediate output: Yescoffeescript.org
CLI access: Yescoffeescript.org
API access: Yescoffeescript.org
Conversion mode: source-to-sourcecoffeescript.org

Facts

Purpose: CoffeeScript is a language that compiles into JavaScript.coffeescript.org · 2 Oct 2026
Runtime: CoffeeScript compiles to equivalent JavaScript with no interpretation at runtime.coffeescript.org · 2 Oct 2026
JavaScript libraries: Existing JavaScript libraries can be used from CoffeeScript and vice versa.coffeescript.org · 2 Oct 2026
Modern output: CoffeeScript 2 produces modern JavaScript syntax, including JavaScript classes and arrow functions.coffeescript.org · 2 Oct 2026
Language features: CoffeeScript 2 includes async function and JSX syntax support.coffeescript.org · 2 Oct 2026
Command line: The coffee command can execute scripts, compile .coffee files to .js, and provide an interactive REPL.coffeescript.org · 2 Oct 2026
Source maps: The command line supports generating external or inline source maps alongside compiled JavaScript.coffeescript.org · 2 Oct 2026
Node.js: The command-line utility requires Node 6 or later, while the core compiler can run in any JavaScript environment or in a browser.coffeescript.org · 2 Oct 2026
Transpilation: CoffeeScript has built-in support for Babel transpilation, which requires @babel/core to be installed.coffeescript.org · 2 Oct 2026
Integrations: The integrations page lists Gulp, Webpack, Grunt, and Broccoli as JavaScript build-chain tools.coffeescript.org · 2 Oct 2026
Editor support: The integrations page lists CoffeeScript support for code editors including Atom, Emacs, Vim, and Visual Studio Code.coffeescript.org · 2 Oct 2026
Testing integration: The integrations page lists Jest with jest-preset-coffeescript for testing.coffeescript.org · 2 Oct 2026
Support: The maker directs bug reports, feature proposals, and ideas to its GitHub issues page and identifies a mailing list as a place to ask questions.github.com · 2 Oct 2026
Runtime compatibility: The maker notes that JSX output always requires transpilation and that modules require Node 12 or later with type set to module in package.json.coffeescript.org · 2 Oct 2026
Purpose: CoffeeScript is a language that compiles into JavaScript.coffeescript.org · 3 Oct 2026
Runtime: CoffeeScript compiles to equivalent JavaScript without runtime interpretation.coffeescript.org · 3 Oct 2026
Compatibility: CoffeeScript can use existing JavaScript libraries, and JavaScript can use CoffeeScript libraries.coffeescript.org · 3 Oct 2026
Modern JavaScript: CoffeeScript 2 compiles to modern JavaScript syntax and includes support for async functions and JSX.coffeescript.org · 3 Oct 2026
Command line: The `coffee` command can execute scripts, compile `.coffee` files into `.js`, and provide an interactive REPL.coffeescript.org · 3 Oct 2026
Installation: CoffeeScript is installed through npm, either globally or as a project dependency.coffeescript.org · 3 Oct 2026
Browser use: The core compiler does not depend on Node and can run in any JavaScript environment, including a browser.coffeescript.org · 3 Oct 2026
Compiler API: The Node API can compile strings of CoffeeScript and optionally generate source maps or an abstract syntax tree.coffeescript.org · 3 Oct 2026
Integrations: The compiler supports Babel transpilation, and the site lists Gulp, Webpack, Grunt, and Broccoli as build-chain options.coffeescript.org · 3 Oct 2026
Editor and framework support: The integrations section links to resources for build tools, code editors, frameworks, linters and formatting, and testing.coffeescript.org · 3 Oct 2026
Runtime requirements: The command-line utility requires Node 6 or later; the site says most supported modern JavaScript features run natively in Node 7.6 or later.coffeescript.org · 3 Oct 2026
Compatibility limit: JSX output always requires transpilation, and CoffeeScript says users are responsible for ensuring their runtime supports the modern features they use or transpiling the output.coffeescript.org · 3 Oct 2026
Support and community: The site links to a CoffeeScript chat and provides contribution guidance.coffeescript.org · 3 Oct 2026