[icandoitbetter]

Piecemeal compilation:

    // beginning of file
    Coffeescript = require('coffee-script');
   
    // compilation    
    Coffeescript.compile(line, {bare: true});

e.g.

    var f = eval(Coffeescript.compile("(x) -> x + 1", {bare: true}));
    f(1) // ==> true