Exposing internals of a Launchpad-launched Neptune app

launchpad_trick.js

// Expose variable when launched from Launchpad
if (sap.n) {
    var attr;   // optional (fill with the name of the window attribute you want, eg. 'APPxxx')
    var exposed = (attr) ? window[attr] = {} 
                         : window;
    var regex = /var (\w*) \= new /gm;  // regexp to determine all variable names (and a few wrong ones)
    var funcCode = arguments.callee + '';

    var match;
    while ((match = regex.exec(funcCode)) !== null) {
        if (match.index === regex.lastIndex) {
            regex.lastIndex++;
        }

        if (match) {
            var variableName = match[1];
            try {
                exposed[variableName] = eval(variableName);
            } catch(e) {
                // never mind, might be variable names within
                // event handlers we are not interested in 
            }
        }
    }
}