将对象传递给护照时的类型错误

Question

我得到 typeError: object is not a function

当我跑步时：

节点服务器.js

以下代码行

require('./app/routes.js')(app, passport);

来自我的 server.js 文件的以下代码：

// server.js

// set up ======================================================================
// get all the tools we need
var express = require('express');
var app = express();
var port = process.env.PORT || 8080;
var mongoose = require('mongoose');
var passport = require('passport');
var flash = require('connect-flash');

var morgan = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');

var configDB = require('./config/database.js');

// configuration ================================================================
mongoose.connect(configDB.url); // connect to our database

// require('./config/passport')(passport); // pass passport for configuration


// set up our express application
app.use(morgan('dev')); // log every request to the console
app.use(cookieParser()); // read cookies (needed for auth)
app.use(bodyParser.json()); // get info from html forms
    app.use(bodyParser.urlencoded({ extended: true}));

app.set('view engine', 'ejs'); // set up ejs for templating

// requirements for passport:
app.use(session({ secret: 'ilovescotchscotchyscotchscotch'}));
app.use(passport.initialize());
app.use(passport.session()); // persistent login sessions
app.use(flash()); // use connect-flash for flash messages stored in session

// routes ========================================================================
require('./app/routes.js')(app, passport); // load our routes and pass in our app and fully configured passport

// launch =======================================================================
app.listen(port);
console.log('The magic happens on port ' + port);

不完全确定为什么会这样......

顺便说一句，我正在关注本教程：https://scotch.io/tutorials/easy-node-authentication-setup-and-local

谢谢！

Answer 1

根据您的 cmets：post 很好地解释了 require 在 nodeJS 中的工作原理（它不是 Javascript 的东西）。基本上每个可能需要的文件通常都会导出需要文件可以分配给变量的东西（例如var someVar = require('someFile');）。 如果导出的值是一个函数，那么您可以在分配给该变量之前立即调用它（例如var someVar = require('someFile')(params);）。对于您的错误，文件./app/routes.js 似乎没有导出函数。

文件：./app/routes.js

// some code that does cool stuff
// ...
// Time to expose whatever we want to the requiring file
module.exports = someObject; // Or value, function, etc.

文件：main.js

// we want cool stuff from routes.js
var coolStuff = require('./app/routes.js');

// someObject from ./app/routes.js is now assigned to coolStuff
coolStuff(); // ERROR: object is not a function

console.log(typeof coolStuff) // "object"