Develop Reference

TypeError: JwtStrategy requires a secret or key, runs on Windows but not on Mac

I am trying to use passport for my javascript code. However, I am getting a "JwtStrategy requires a secret or key error". I am collaborating with my friend on this. While his runs fine, mine does not and I'm not sure why. He uses windows while I use a mac, for reference.
Our code for jwt.js:
const JwtStrategy = require('passport-jwt').Strategy;
const ExtractJwt = require('passport-jwt').ExtractJwt;
var User = require("./models/user");
const opts = {}
opts.jwtFromRequest = ExtractJwt.fromAuthHeaderAsBearerToken();
opts.secretOrKey = process.env.JWT_SECRET_KEY;
module.exports = new JwtStrategy(opts, async (jwt_payload, done) => {
const user = await User.findOne({email: jwt_payload.email});
if (!user) {
return done(null, false)
}
return done(null, user);
})
The error message:
TypeError: JwtStrategy requires a secret or key
at new JwtStrategy (/Users/editedUser/Desktop/frods/server/node_modules/passport-jwt/lib/strategy.js:45:15)
at Object.<anonymous> (/Users/editedUser/Desktop/frods/server/jwt.js:10:18)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (/Users/editedUser/Desktop/frods/server/app.js:9:17)
at Module._compile (internal/modules/cjs/loader.js:1063:30)

Update: It was a stupid mistake(?) on my part. When I saved the .env files, they were in the .crash format. It was showing up in my finder as .env, but in the command line, it was showing up as
.env.crash
I had to rename it as
mv .env.crash .env
for it to work

throw new mongoose.Error.MissingSchemaError(name) MissingSchemaError: Schema hasn't been registered for model "superheros"

I'm getting this error when I update my server on nodemon.
C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\mongoose\lib\index.js:523
throw new mongoose.Error.MissingSchemaError(name);
^
MissingSchemaError: Schema hasn't been registered for model "superheros".
Use mongoose.model(name, schema)
at Mongoose.model (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\node_modules\mongoose\lib\index.js:523:13)
at Object.<anonymous> (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\routes\api.js:4:26)
at Module._compile (internal/modules/cjs/loader.js:1015:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1035:10)
at Module.load (internal/modules/cjs/loader.js:879:32)
at Function.Module._load (internal/modules/cjs/loader.js:724:14)
at Module.require (internal/modules/cjs/loader.js:903:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\app.js:6:11)
at Module._compile (internal/modules/cjs/loader.js:1015:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1035:10)
at Module.load (internal/modules/cjs/loader.js:879:32)
at Function.Module._load (internal/modules/cjs/loader.js:724:14)
at Module.require (internal/modules/cjs/loader.js:903:19)
at require (internal/modules/cjs/helpers.js:74:18)
at Object.<anonymous> (C:\Users\mikae\Desktop\Project\node-express-swig-mongo\bin\www:7:11)
[nodemon] app crashed - waiting for file changes before starting...
api.js
var express = require('express');
var router = express.Router();
var mongoose = require('mongoose');
var Superhero = mongoose.model('superheros');
router.get('/superheros', function(req, res) {
Superhero.find(function(err, superheros){
console.log(superheros)
res.render(
'api',
{title : 'Superhero API', superheros : superheros}
);
});
});
router.post('/superheros', function(req, res) {
console.log(req.body.name);
res.redirect('/api/superheros');
});
module.exports = router;
database.js
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var Superhero = new Schema(
{name : String}
);
mongoose.model('superheros', Superhero);
mongoose.connect('mongodb://localhost/node-superhero');
I'm building Crud with Mongoose, Node, and Express. This error appears when I write method POST on api.js and even erasing error remains. I'm learning from this tutorial
https://mherman.org/blog/node-express-swig-mongo-primer/

The short answer to your question is that you are not exporting the Schema in database.js
You should do:
var mongoose = require('mongoose');
var Schema = mongoose.Schema;
var superheroSchema = new Schema(
{name : String}
);
module.exports = mongoose.model('Superhero', superheroSchema);
Also it is better to seprate the connection to the database in a different file or atleast use it in your main file like this:
mongoose.connect('mongodb://localhost:27017/test', { useNewUrlParser: true })
.then(//Some code here...)
.catch(error => handleError(error));
It is simply wrong to try and make a connection to the database inside a model definition.
And when requiring the schema use:
var Superhero = require('{path to the file containing the schema}')

koa-router error router.routes is not a function

When I try to use koa-route 3.2.0 example from their website, I got error message router.routes is not a function
const Koa = require('koa');
const router = require('koa-route');
const app = new Koa();
app.use(logger());
router.get('/users', (ctx, next) => {
ctx.response.body =`<h1>Hello!</h1>`;
});
app.use(router.routes())
.use(router.allowedMethods());
// don't listen to this port if the app is required from a test script
if (!module.parent) {
app.listen(1337);
console.log('listening on port: 1337');
}
I got error message:
app.use(router.routes())
^
TypeError: router.routes is not a function
at Object.<anonymous> (/Projects/shoucast-front-end-prototype/script/server.js:40:16)
at Module._compile (module.js:569:30)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:503:32)
at tryModuleLoad (module.js:466:12)
at Function.Module._load (module.js:458:3)
at Function.Module.runMain (module.js:605:10)
at startup (bootstrap_node.js:158:16)
at bootstrap_node.js:575:3
When I try to change
const router = require('koa-route');
to
var router = require('koa-router')();
I got error message:
const router = require('koa-route')();
^
TypeError: require(...) is not a function
at Object.<anonymous> (/Projects/shoucast-front-end-prototype/script/server.js:2:36)
at Module._compile (module.js:569:30)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:503:32)
at tryModuleLoad (module.js:466:12)
at Function.Module._load (module.js:458:3)
at Function.Module.runMain (module.js:605:10)
at startup (bootstrap_node.js:158:16)
at bootstrap_node.js:575:3

Looks like you've installed the newer version, available at https://github.com/alexmingoia/koa-router/tree/master
You need to use new Router() instead.
Also looks like you're mixing up koa-router with koa-route, which are two different packages.
const Koa = require('koa');
const Router = require('koa-router');
const app = new Koa();
const router = new Router();
router.get('/', function (ctx, next) {
// ctx.router available
});
app
.use(router.routes())
.use(router.allowedMethods());

Cannot read property 'sync' of undefined

I am following a tutorial on how to set up a basic mvc in Nodejs using the hapi server and a few other packages.
Tutorial: https://www.sitepoint.com/node-js-mvc-application/
Git for my project: https://github.com/christoph88/node-js-mvc-tut/
I have an error when I try to launch the server:
~/Projects/node-js-mvc-tut$ node server.js
/home/christoph/Projects/node-js-mvc-tut/server.js:33
Models.sequelize.sync().then(() => {
^
TypeError: Cannot read property 'sync' of undefined
at Object.<anonymous> (/home/christoph/Projects/node-js-mvc-tut/server.js:33:17)
at Module._compile (module.js:569:30)
at Object.Module._extensions..js (module.js:580:10)
at Module.load (module.js:503:32)
at tryModuleLoad (module.js:466:12)
at Function.Module._load (module.js:458:3)
at Function.Module.runMain (module.js:605:10)
at startup (bootstrap_node.js:158:16)
at bootstrap_node.js:575:3
Model is defined within the requirements. I do not understand why sync is undefined. Sequelise is required within the lib/index.js file.
'use strict';
const Hapi = require('hapi');
const Hoek = require('hoek');
const Path = require('path');
const Settings = require('./settings');
const Routes = require('./lib/routes');
const Models = require('./lib/models/');
const server = new Hapi.Server();
server.connection({ port: Settings.port });
server.register([
require('vision'),
require('inert')
], (err) => {
Hoek.assert(!err, err);
server.views({
engines: { pug: require('pug') },
path: Path.join(__dirname, 'lib/views'),
compileOptions: {
pretty: false
},
isCached: Settings.env === 'production'
});
// Add routes
server.route(Routes);
});
Models.sequelize.sync().then(() => {
server.start((err) => {
Hoek.assert(!err, err);
console.log(`Server running at: ${server.info.uri}`);
});
});
Can somebody help me with this? Would be great to get this running so I can try to adapt it to my needs.

I have got it working by moving my index.js file to the models folder.
This file has the necessairy scripts that dispatches sequelise in the model thus fixing the problem.

Make sure you have exported the db in index.js
module.exports = db
and declared a db variable at the beginning of the file
var db = {}

Node Js .get() requires callback functions

This is my server.js code
var express = require('express');
feeds = require('./routes/whatshappeningfeed');
var http = require('http');
var pathname = require('path');
// Test services - to be removed
courses = require('./routes/courses');
auth = require('./routes/auth');
token = require('./routes/token');
var app = express();
app.configure(function () {
app.use(express.logger('dev')); /* 'default', 'short', 'tiny', 'dev' */
app.use(express.bodyParser());
});
app.use(function (error, req, res, next) {
if (!error) {
next();
} else {
console.error(error.stack);
res.send(500);
}
});
app.get('/me/whatshappeningfeed',feeds.getfeeds);
app.get('/courses', courses.findAll);
app.get('/courses/:id', courses.findById);
app.get('/token', token.auth);
app.get('/auth', auth.auth);
app.get('/refresh', auth.refresh);
app.listen(80);
console.log('Listening on port 80...');
this is my error message :
F:\NODE.JS\poc\node_modules\express\lib\router\index.js:291
throw new Error(msg);
^
Error: .get() requires callback functions but got a [object Undefined]
at F:\NODE.JS\poc\node_modules\express\lib\router\index.js:291:11
at Array.forEach (native)
at Router.route (F:\NODE.JS\poc\node_modules\express\lib\router\index.js:287:13)
at Router.(anonymous function) [as get] (F:\NODE.JS\poc\node_modules\express\lib\router\index.js:318:16)
at Function.app.(anonymous function) [as get] (F:\NODE.JS\poc\node_modules\express\lib\application.js:431:26)
at Object.<anonymous> (F:\NODE.JS\poc\server.js:44:5)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
at Module.load (module.js:356:32)
at Function.Module._load (module.js:312:12)
When i run the node server.js file i got above error. it was working earlier. i couldn't sort out the issue. please anyone help me.

The error says it all, app.get() requires a callback function. So it means that one or more of your routes are missing a callback.
ALL of your routes should have a function(req,res), whether explicitely as in the example or in another function (see comments) :
app.get('/me/whatshappeningfeed', function(req,res){ //request, response
//then here you can define what your server should send as a response when queries for /me/whatshappeningfeed
res.send(feeds.getfeeds()); //this will send back to the browser the result of feeds.getfeeds()
});
Also, not sure if it's due to the copypaste you did, but the first semicolon require('express'); should be a comma.