javascript - TypeError: require(...) is not a function - Stack Overflow

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I'm getting the following error:

var userModel = require("./models/user.model.js")();
                                                 ^

TypeError: require(...) is not a function
at module.exports 
at Object.<anonymous> 
at Module._pile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:467:10)
at startup (node.js:136:18)

when I try to require 2 files, using the following code:

module.exports = function (app) {
  "use strict";

  var userModel = require("./models/user.model.js")();
  var formModel = require("./models/form.model.js")();

  require("./services/user.service.server.js")(app, userModel);
  require("./services/form.service.server.js")(app, formModel);
  require("./services/field.service.server.js")(app, formModel);
};

I'm new to this and I can't understand the problem. Can someone please explain it to me and help me find a solution?

EDIT: Adding user.services.server.js:

module.exports = function(app, userModel) {
"use strict";

app.post('/api/assignment/user', createUser);
app.get('/api/assignment/user', findUsers);
app.get('/api/assignment/user/:id', findUserById);
app.put("/api/assignment/user/:userId", updateUserById);
app.delete("/api/assignment/user/:userId", deleteUserById);

function createUser(req, res) {
    var newUser = userModel.createUser(req.body);
    res.json(newUser);
}

function findUsers(req, res) {
    if (req.query.username) {
        if (req.query.password) {
            findUserByCredentials(req, res);
        } else {
            findUserByUsername(req, res);
        }
    } else {
        var users = userModel.findAllUsers();
        res.json(users);
    }
}

function findUserById(req, res) {
    var userId = parseInt(req.params.id);
    var user = userModel.findUserById(userId);
    res.json(user);
}

function findUserByUsername(req, res) {
    var username = req.query.username;
    var user = userModel.findUserByUsername(username);
    res.json(user);
}

function findUserByCredentials(req, res) {
    var credentials = {
        username: req.query.username,
        password: req.query.password
    };
    var user = userModel.findUserByCredentials(credentials);
    res.json(user);
}

function updateUserById(req, res) {
    var userId = parseInt(req.params.id);
    var newUser = userModel.updateUser(userId, req.body);
    res.json(newUser);
}

function deleteUserById(req, res) {
    var userId = parseInt(req.params.id);
    userModel.deleteUser(userId);
    res.send(200);
}

}();

I'm getting the following error:

var userModel = require("./models/user.model.js")();
                                                 ^

TypeError: require(...) is not a function
at module.exports 
at Object.<anonymous> 
at Module._pile (module.js:435:26)
at Object.Module._extensions..js (module.js:442:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:311:12)
at Function.Module.runMain (module.js:467:10)
at startup (node.js:136:18)

when I try to require 2 files, using the following code:

module.exports = function (app) {
  "use strict";

  var userModel = require("./models/user.model.js")();
  var formModel = require("./models/form.model.js")();

  require("./services/user.service.server.js")(app, userModel);
  require("./services/form.service.server.js")(app, formModel);
  require("./services/field.service.server.js")(app, formModel);
};

I'm new to this and I can't understand the problem. Can someone please explain it to me and help me find a solution?

EDIT: Adding user.services.server.js:

module.exports = function(app, userModel) {
"use strict";

app.post('/api/assignment/user', createUser);
app.get('/api/assignment/user', findUsers);
app.get('/api/assignment/user/:id', findUserById);
app.put("/api/assignment/user/:userId", updateUserById);
app.delete("/api/assignment/user/:userId", deleteUserById);

function createUser(req, res) {
    var newUser = userModel.createUser(req.body);
    res.json(newUser);
}

function findUsers(req, res) {
    if (req.query.username) {
        if (req.query.password) {
            findUserByCredentials(req, res);
        } else {
            findUserByUsername(req, res);
        }
    } else {
        var users = userModel.findAllUsers();
        res.json(users);
    }
}

function findUserById(req, res) {
    var userId = parseInt(req.params.id);
    var user = userModel.findUserById(userId);
    res.json(user);
}

function findUserByUsername(req, res) {
    var username = req.query.username;
    var user = userModel.findUserByUsername(username);
    res.json(user);
}

function findUserByCredentials(req, res) {
    var credentials = {
        username: req.query.username,
        password: req.query.password
    };
    var user = userModel.findUserByCredentials(credentials);
    res.json(user);
}

function updateUserById(req, res) {
    var userId = parseInt(req.params.id);
    var newUser = userModel.updateUser(userId, req.body);
    res.json(newUser);
}

function deleteUserById(req, res) {
    var userId = parseInt(req.params.id);
    userModel.deleteUser(userId);
    res.send(200);
}

}();

• javascript
• node.js
• module
• export
• typeerror

Share Improve this question Follow edited Mar 19, 2016 at 21:16 anonn023432 asked Mar 19, 2016 at 21:11 anonn023432anonn023432 3,12066 gold badges3939 silver badges6565 bronze badges 4

• The problem is in "./services/user.service.server.js" - what does that code look like? – Pointy Commented Mar 19, 2016 at 21:13
• @Pointy I edited my question to add that file – anonn023432 Commented Mar 19, 2016 at 21:17
• 2 Isn't the error in var userModel = require("./models/user.model.js")();? Have you tried removing the parentheses? So var userModel = require("./models/user.model.js"); and then same for the next line – T. Silver Commented Mar 19, 2016 at 21:19
• 2 The last line of user.service.server.js is }(). That means that the module.export line in that file is exporting the return value from the function, and not the function itself. Get rid of the (). – Pointy Commented Mar 19, 2016 at 21:20

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1 Answer 1

Sorted by: Reset to default 7

This is because you added () at the end of require. Remove them.

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