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Helper for efficiently require()'ing CoffeeScript and/or Streamline files. The key word is "efficiently": compiled code is cached to prevent recompilation on subsequent runs.

Note that Streamline does natively support caching compiled code, but it only caches the Streamline compilation; CoffeeScript is compiled every time there. This module caches both types of compilation.

This module is also robust to version changes (upgrades) to both CoffeeScript and Streamline; files will be properly recompiled in those cases.


npm install coffee-streamline

Note that CoffeeScript and Streamline should also be installed like normal, e.g. your package.json should specify the desired versions of those.


You can simply require() this module in place of both CoffeeScript and Streamline; all proper require() handlers will be registered:


You can then require() CoffeeScript and/or Streamline files like normal, and they'll be compiled and cached automatically:

require('./foo');   // e.g. 
require('./bar');   // e.g. bar._js 
require('./baz');   // e.g. baz._coffee 

You can also run a CoffeeScript and/or Streamline file as if it were the main file being executed:

require('coffee-streamline').run('./app');  // e.g. app._coffee 
// within app._coffee, `module === require.main` will be true 

Relative paths like ./app will be resolved relative to the parent module just like require().


Cached files are stored in a .cache directory under the current working directory at runtime (process.cwd()). This is to support deploying the compiled files alongside the source ones, e.g. via rsync.

Currently, Streamline compilation happens under "callback" mode.


Support configuration/options, e.g. cache directory location and Streamline compilation mode (callbacks or fibers).

Can/should some of this be integrated into Streamline directly?


0.1.3 - Minor improvement to run() to better support node-dev.

0.1.2 - New feature: run() files as main!

0.1.1 - Ported to JS for simplicity.

0.1.0 - Initial release.


MIT. © 2012 Aseem Kishore.


Jeremy Ashkenas for the awesome CoffeeScript, and Bruno Jouhier for the awesome Streamline.