Object has no method 'createApp'-CodePudding

I'm new to Javascript. I'm trying to load the following script using Node.js (ver. 0.8.8, it has to be done in this specific version), OS - Windows 10:

//require('look').start();
var main = require('skilap-core');
if (process.argv[2]=="automated") {
    process.on("message",function (msg) {
        if (msg.c == "startapp") {
            var app = main.createApp(msg.data);
            app.startApp(__dirname "/data",function (err) {
                process.send({c:"startapp_repl",data:err})
            });
        }
    })
} else {
    var app = main.createApp();
    app.startApp(__dirname "/data",function (err) {
        if (err) console.log(err);
    });
    module.exports = app;
}

But I get the following error:

> TypeError: Object #<Object> has no method 'createApp'
    at Object.<anonymous> D:\Downloads\skilap\skilap\app.js:13:17)
    at Module._compile (module.js:449:26)
    at Object.Module._extensions..js (module.js:467:10)
    at Module.load (module.js:356:32)
    at Function.Module._load (module.js:312:12)
    at Module.runMain (module.js:492:10)
    at process.startup.processNextTick.process._tickCallback(node.js:244:9)

As I understand, the module loads correctly, but doesn't compile. I've done research in the web and also saw other related questions on this site, but I cannot see what the problem actually is. What does the error mean and what needs to be changed to launch the app? Any help would be appreciated.

CodePudding user response：

You require a module I've never heard of:

var main = require('skilap-core');

This is a javascript object. In your code you are trying to call a createApp() method on that object:

var app = main.createApp();

The main object does not have the createApp() function.

I would use a debugger or insert a console.log(main) after the require to see what the object actually looks like.

I used npm pack skilap-core to download it as a tgz file and examine it. There doesn't appear to be a createApp() function at all. It appears to want to take some kind of custome webapp as a parameter:

module.exports = function (webapp) {
    var app = webapp.web;
    var ctx = webapp._ctx;
    var prefix = webapp.prefix;
    var api = webapp;

    app.get(prefix, function (req, res, next) {
        res.redirect(prefix "/user");
    })

    app.get("/", webapp.layout(), function(req, res, next) {
    ...

CodePudding user response：

I changed the line var main = require('skilap-core') to var main = require('./modules/core/lib/core.js') (the path to the module file) and the module started working.