fabIssue.js

var fab = require('./');
for (var i in fab){
  global[i] = fab[i];
}
require('http').createServer(
  ( fab )
  
  ( nodejs )

  ( contentLength )
  ( stringify )
  
  ( /\/date/ )
    ( tmpl )
      ( "The Date is <%= this.toDateString() %>." )
      ()

  ( /\/time/ ) 
    ( tmpl )
      ( "The Time is <%= this.toTimeString() %>." )
      ()
  
  ( new Date )
).listen( 4000 );

//error is received when you try to go to /date or /time
/*! Error Message:

/home/rixius/node/fab/apps/fab.tmpl.js:28
      obj.body = fn.call( obj.body );
                    ^
TypeError: Object [object Object] has no method 'call'
    at Object.<anonymous> (/home/rixius/node/fab/apps/fab.tmpl.js:28:21)
    at listener (/home/rixius/node/fab/apps/fab.map.js:10:40)
    at Function.<anonymous> (/home/rixius/node/fab/apps/fab.body.js:8:15)
    at /home/rixius/node/fab/apps/fab.path.js:41:21
    at /home/rixius/node/fab/apps/fab.path.js:42:28
    at Server.<anonymous> (/home/rixius/node/fab/apps/fab.nodejs.js:18:17)
    at Server.emit (events:33:26)
    at HTTPParser.onIncoming (http:825:10)
    at HTTPParser.onHeadersComplete (http:87:31)
    at Stream.ondata (http:757:22)

 */

the problem seems to be with your use of global, since the following works:

var fab = require('fab');

require('http').createServer(

  ( fab )

  ( fab.nodejs )

  ( fab.contentLength )
  ( fab.stringify )

  ( /\/date/ )
    ( fab.tmpl )
      ( "The Date is <%= this.toDateString() %>." )
      ()

  ( /\/time/ ) 
    ( fab.tmpl )
      ( "The Time is <%= this.toTimeString() %>." )
      ()

  ( new Date )

).listen( 4000 );

Thanks, I don't know why i didn't try that...