Code snippet to find the dependencies of a CoffeeScript file.

FindDependencies.js

// Finding all the require calls in coffee-script file.
// This won't work if a minified version of coffeescript is loaded.(Like @ http://coffeescript.org)
// Note that if the argument to require should be a string. `module = 'fs'\nfs = require(module)` wont work.

var CoffeeScript = require('coffee-script');

// There are two requires calls.
var code = 'fs = require \'fs\'\nEventEmitter = require(\'events\').EventEmitter';

var program = CoffeeScript.nodes(code);
var deps = [];

program.traverseChildren(false, function(node) {
    var type = node.constructor.name;
    if (type === 'Call' &&
        node.variable.base.value === 'require' &&
        node.variable.properties.length === 0
    ) {
        var arg = node.args.slice(0, 1).pop();
        var strTest = arg.base.value.match(/^['"](.*)['"]$/);

        if (arg.properties.length === 0 && strTest !== null) {
            deps.push(strTest[1]);
        }
    }
});

console.log("The coffe-script code snippet depends on: \'", deps.join(' , '), '\'');