var fs = require(“fs”),

path = require("path"),
document = require("jsdom").jsdom("<html><head></head><body></body></html>"),
window = document.createWindow();

// 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 + "");

};

module.exports = (new Function(“window”, “document”,

"return " + fs.readFileSync(path.join(__dirname, "d3.js"), "utf-8"))

)(window, document);