Node.js：TypeError：object不是函数

I have a weird error:

我有一个奇怪的错误：

var http = require("http");
var request = require("request");

http.createServer(function(request, response) {
    response.writeHead(200, {"Content-Type": "text/plain"});

    request('https://www.google.com', function (error, response, body) {
        if (!error && response.statusCode == 200) {
            console.log(body) // Print the google web page.
        }
    });
    response.end();
}).listen(8888);
var http =