var document = global.document = require("jsdom").jsdom(""), window = global.window = document.createWindow(); // https://github.com/chad3814/CSSStyleDeclaration/issues/3 var CSSStyleDeclaration_prototype = window.CSSStyleDeclaration.prototype, CSSStyleDeclaration_setProperty = CSSStyleDeclaration_prototype.setProperty; CSSStyleDeclaration_prototype.setProperty = function(name, value, priority) { return CSSStyleDeclaration_setProperty.call(this, name + "", value == null ? null : value + "", priority == null ? null : priority + ""); };