bar.js

/**
 * Directive, '@' properties isolate scope, not passing any values.
 * commit: https://github.com/angular/angular.js/pull/11628/files 
 */
 
var obj  = { fbHref: undefined, fbLayout: undefined, fbAction: undefined, fbShowFaces: undefined, fbShare: undefined };
var keys = Object.keys(obj);

# 1.4.2
LOG: 'obj.keys', ['fbHref', 'fbLayout', 'fbAction', 'fbShowFaces', 'fbShare']
LOG: 'opts', Object{fbHref: undefined, fbLayout: undefined, fbAction: undefined, fbShowFaces: undefined, fbShare: undefined}

# 1.3.15
LOG: 'obj.keys', []
LOG: 'opts', Object{}