(function(root) {
Underscore-contrib (underscore.util.existential.js 0.0.1) (c) 2013 Michael Fogus, DocumentCloud and Investigative Reporters & Editors Underscore-contrib may be freely distributed under the MIT license.
(function(root) {
Establish the root object, window
in the browser, or global
on the server.
var _ = root._ || require('underscore');
_.mixin({
exists: function(x) { return x != null; },
truthy: function(x) { return (x !== false) && _.exists(x); },
falsey: function(x) { return !_.truthy(x); },
not: function(b) { return !b; }
});
})(this);