replace() not working for multiple replacements

[mcandre]

I'd like to covershot several directories. From reading the covershot docs, I suppose I should do:

var covershot = require('covershot');

// replace all paths containing a 'routes' component with 'routes-cov'
covershot.replace('routes', 'routes-cov');
covershot.replace('services', 'services-cov');
covershot.replace('email', 'email-cov');

var csrequire = covershot.require.bind(null, require);
var myLibrary = csrequire('../lib/myLibrary');

But when I do this, csrequire doesn't appear to actually be replacing these, and so Node reports errors about failing to find files.