clean install node ,express, socket.io on linux environment using npm. I try to runsocket.io sample from socket.io official source, I am getting error socket.io-client module not found on command line.
I work around few hours to solve this. but I didnt found any soutions.
Error :
module.js:337
throw new Error("Cannot find module '" + request + "'");
^
Error: Cannot find module 'socket.io-client'
at Function._resolveFilename (module.js:337:11)
at Function._load (module.js:279:25)
at Module.require (module.js:359:17)
at require (module.js:375:17)
at Object.<anonymous> (/home/rajuk/Documents/nodeSamples/node_modules/socket.io/lib/socket.io.js:12:14)
at Module._compile (module.js:446:26)
at Object..js (module.js:464:10)
at Module.load (module.js:353:32)
at Function._load (module.js:311:12)
at Module.require (module.js:359:17)
socket.io install result
socket.io#0.9.14 /usr/local/lib/node_modules/socket.io
├── base64id#0.1.0
├── policyfile#0.0.4
├── redis#0.7.3
└── socket.io-client#0.9.11
here is my code(app.js)
var app = require('express')()
, server = require('http').createServer(app)
, io = require('socket.io').listen(server);
server.listen(80);
app.get('/', function (req, res) {
res.sendfile(__dirname + '/index.html');
});
io.sockets.on('connection', function (socket) {
socket.emit('news', { hello: 'world' });
socket.on('my other event', function (data) {
console.log(data);
});
});
and node_modules directory contains socket.io and express packages.
I am trying to run server like this
$ node app.js
how to resolve it?
Clone this git depositery : https://github.com/yrezgui/socket.io-simple-demo
And tell me if you still have an error.
Related
var express = require('express');
var router = express.Router();
var bodyParser = require('body-parser');
var nodemailer = require('nodemailer');
var TWILIO_TOKEN = "270ff32fe16828869dc30e0c6926fa9e";
var client = require('twilio')(process.env.AC55a59221acb23a5aa6f046740bb73317, process.env.TWILIO_TOKEN);
router.use(bodyParser.urlencoded({extended: true}));
router.use(bodyParser.json());
router.post('/', function(req, res) {
console.log('this is the req', req.body);
client.messages.creat({
to:'+19522209630',
from:'+17633249718',
body:'hello World'
}, function(err, data) {
if (err) {
console.log('err', err);
console.log('data', data);
}
});//en d of sendMessage
res.send(200);
});
module.exports = router;
/Users/moisesmiguelhernandez/Documents/prime/solo_project/node_modules/twilio/lib/rest/Twilio.js:101
throw new Error('username is required');
^
Error: username is required
at new Twilio (/Users/moisesmiguelhernandez/Documents/prime/solo_project/node_modules/twilio/lib/rest/Twilio.js:101:11)
at initializer (/Users/moisesmiguelhernandez/Documents/prime/solo_project/node_modules/twilio/lib/index.js:8:10)
at Object.<anonymous> (/Users/moisesmiguelhernandez/Documents/prime/solo_project/routes/sendMessage.js:6:31)
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 Module.require (module.js:513:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (/Users/moisesmiguelhernandez/Documents/prime/solo_project/server.js:10:19)
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)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! solo_project#1.0.0 start: `node server.js`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the solo_project#1.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/moisesmiguelhernandez/.npm/_logs/2017-07-11T15_02_02_750Z-debug.log
I am getting and error that says username is required. I am trying to use twilio. I followed a youtube video and i have it like he does. Any suggestions on how to fix this? P.S The index file is the terminal error message
Save these into a .env file at your root of your folder
TWILIO_TOKEN = "270ff32fe16828869dc30e0c6926fa9e"
TWILIO_ACCOUNT_SID = "AC55a59221acb23a5aa6f046740bb73317"
Then install
npm install dotenv --save
After that you can use these environment variables in your file like this:
require('dotenv');
var client = require('twilio')(process.env.TWILIO_ACCOUNT_SID, process.env.TWILIO_TOKEN);```
I had this same issue as well. What fixed it for me is doing
npm install dotenv
require('dotenv').config()
then I added my
TWILIO_ACCOUNT_SID=***
TWILIO_AUTH_TOKEN=***
full code:
require('dotenv').config();
const accountSid = process.env.ACCOUNT_SID;
const authToken = process.env.AUTH_TOKEN;
const client = require('twilio')(accountSid, authToken);
client.calls
.create({
url: 'http://demo.twilio.com/docs/voice.xml',
to: process.env.CELL_PHONE,
from: process.env.TWIL_NUM,
})
.then(call => console.log(call.sid))
.catch(err => console.log(err));
var TWILIO_TOKEN = "270ff32fe16828869dc30e0c6926fa9e";
var TWILIO_ACCOUNT_SID = "AC55a59221acb23a5aa6f046740bb73317";
var client = require('twilio')(process.env.TWILIO_ACCOUNT_SID, process.env.TWILIO_TOKEN);
#philnash i changed it and fixed the creat typo but the terminal is still saying 'username is required'
Note -: This is not at all a good way but just a workaround. I will edit the answer as soon I will get the right way. This is just a trick which worked in my case.
const client = require('twilio')(<YOUR_ACCOUNT_SID>, <YOUR_ACCOUNT_KEY>);
basically use the keys directly instead of referencing through any variable.
Twilio developer evangelist here.
Aside from the typo in creat that Champa has pointed out in the comments, I think I know where you're going wrong. Your code currently has:
var client = require('twilio')(process.env.AC55a59221acb23a5aa6f046740bb73317, process.env.TWILIO_TOKEN);
I am guessing that it should have something like process.env.TWILIO_ACCOUNT_SID.
The account sid is effectively the username for accessing the API, which is why the error message says that.
Let me know if that helps at all.
I encountered this issue today and was getting message Error: username is required when running my twilio test. Since I am using dotenv, I have a .env file with my environment variables, and this is where I made a mistake. We have another app with the SID and TOKEN variables, so I copied them and left in the export keyword, i.e. export TWILIO_ACCOUNT_SID=..., but if using dotenv, the export keyword is not needed. I removed export and re-run my test script and it all worked, e.g.
TWILIO_ACCOUNT_SID=***
TWILIO_AUTH_TOKEN=***
I was working with a colleague when we encounter the same error. I tried almost all the solutions but didn't work for me (most of the solutions here are the same in a sense).
How we resolve this was amazing: how?
When you are using a file called .env for your environment variables, you need to double checks where you created this file
.env file must be created in your root directory. That means must be inside your project folder not inside sub-folder that is inside your project.
when you are to use it, make sure you reference the right variable. This mistake is
related to this question. such as
// index.js
// this wrong, notice process.env.AC55a59221acb23a5aa6f046740bb73317 in client variable
TWILIO_TOKEN = "270ff32fe16828869dc30e0c6926fa9e";
var client = require('twilio')(process.env.AC55a59221acb23a5aa6f046740bb73317, process.env.TWILIO_TOKEN);
this is correct process.env.TWILIO_ACCOUNT_SID
// .env
TWILIO_ACCOUNT_SID=AC55a59221acb23a5aa6f046740bb73317
Twilio Documentation
Interested in the mistake we made, it's the wrong placement of .env file.
I have ran into this error earlier so, adding to the answers above make sure the .env file is in the root directory, all spellings are correct and dotenv package is used.
I figured out the issue that I was having with this. When starting up the server, make sure that you are in the directory that contains the .env file.
The Silly mistake which I made was, I used "SMS_SID: YourSID", It must be "SMS_SID = YourSID".
In my case, everything was correct except I was using the account_sid and auth_token of test credential instead of Live credential.
I am trying to run my node app. But I am getting an error, which I am not able to understand. please any one help me to understand this?
here is my code :
var express = require("express"),
app = express(),
path = require("path");
app.get("/", function( req, res ) {
res.sendfile( path.join(__dirname + '/index.html'));
});
var adminRouter = express.Router();
adminRouter.get('/', function(req, res) {
res.send('I am the dashboard!');
});
app.use("/admin", adminRouter);
app.listen(process.env.PORT, process.env.IP);
console.log("basic app listeners!");
the error I am getting is :
adminRouter.get('/', function(req, res) {
^
TypeError: Cannot read property 'get' of undefined
at Object.<anonymous> (/home/ubuntu/workspace/server.js:16:12)
at Module._compile (module.js:409:26)
at Object.Module._extensions..js (module.js:416:10)
at Module.load (module.js:343:32)
at Function.Module._load (module.js:300:12)
at Function.Module.runMain (module.js:441:10)
at startup (node.js:139:18)
at node.js:990:3
Can any one help me? I am running my app in cloud9.
thanks in advance!!
Your express version less than +4 , probably version 3. Try
npm uninstall express --save
Then re-install.
adminRouter.get('/', function(req, res) {
res.send('I am the dashboard!');
});
try it like this as well.
adminRouter.route('/').get(function(req,res){
res.json({'hello there from main route!'});
});
Actually this is express version problem.
express.Router(); is supported on version 4.x and cloud 9 support by default 3.x
change your package.json
"express": "^4.15.2",
and delete node_module folder
then run
npm install
I clone Repo parse server from parse-server-example and add run mongo db and also install nodejs pacakge via npm install, But when i want to run app with npm start print this error in terminal!!
How i can fix this issue ? it's about nodejs version or what?
Here is my index.js file:
// Example express application adding the parse-server module to expose Parse
// compatible API routes.
var express = require('express');
var ParseServer = require('parse-server').ParseServer;
var path = require('path');
var databaseUri = process.env.DATABASE_URI || process.env.MONGODB_URI;
var api = new ParseServer({
databaseURI: databaseUri || 'mongodb://localhost:27017/dev',
cloud: process.env.CLOUD_CODE_MAIN || __dirname + '/cloud/main.js',
appId: process.env.APP_ID || 'app',
masterKey: process.env.MASTER_KEY || 'master', //Add your master key here. Keep it secret!
serverURL: process.env.SERVER_URL || 'http://localhost:1337/parse', // Don't forget to change to https if needed
liveQuery: {
classNames: ["Posts", "Comments"] // List of classes to support for query subscriptions
}
});
// Client-keys like the javascript key or the .NET key are not necessary with parse-server
// If you wish you require them, you can set them as options in the initialization above:
// javascriptKey, restAPIKey, dotNetKey, clientKey
var app = express();
// Serve static assets from the /public folder
app.use('/public', express.static(path.join(__dirname, '/public')));
// Serve the Parse API on the /parse URL prefix
var mountPath = process.env.PARSE_MOUNT || '/parse';
app.use(mountPath, api);
// Parse Server plays nicely with the rest of your web routes
app.get('/', function(req, res) {
res.status(200).send('Make sure to star the parse-server repo on GitHub!');
});
// There will be a test page available on the /test path of your server url
// Remove this before launching your app
app.get('/test', function(req, res) {
res.sendFile(path.join(__dirname, '/public/test.html'));
});
var port = process.env.PORT || 1337;
var httpServer = require('http').createServer(app);
httpServer.listen(port, function() {
console.log('parse-server-example running on port ' + port + '.');
});
// This will enable the Live Query real-time server
ParseServer.createLiveQueryServer(httpServer);
And by install babel-cli and run show me this:
/Users/sajad/Sites/parse/node_modules/parse-server/node_modules/babel-polyfill/lib/index.js:14
throw new Error("only one instance of babel-polyfill is allowed");
^
Error: only one instance of babel-polyfill is allowed
at Object.<anonymous> (/Users/sajad/Sites/parse/node_modules/parse-server/node_modules/babel-polyfill/lib/index.js:14:9)
at Module._compile (module.js:460:26)
at Module._extensions..js (module.js:478:10)
at Object.require.extensions.(anonymous function) [as .js] (/usr/local/lib/node_modules/babel-cli/node_modules/babel-register/lib/node.js:134:7)
at Module.load (module.js:355:32)
at Function.Module._load (module.js:310:12)
at Module.require (module.js:365:17)
at require (module.js:384:17)
at Object.<anonymous> (/Users/sajad/Sites/parse/node_modules/parse-server/lib/ParseServer.js:9:1)
at Module._compile (module.js:460:26)
This is because this module(or more correctly, a dependency of your module) is using the const keyword which isn't available in your node version (v0.12). Full support for the const keyword came in v6 of node which arrived just this week.
Alternatively you could transpile your project using babel
If you go with the babel route you could do the following in your project root folder
npm install -g babel-cli
babel-node index.js
See babel usage page for more information on how to use babel correctly.
EDIT: In the documentation you provided it explicitly tells you that you must have at least node v4.3 and that you should run the project with the command "npm start". So i'm guessing that this project already has babel, you're just running it incorrectly and with the incorrect node version.
After many tries, I am unnable to connect node.js to Neo4j installed in my computer. I am able to access both separately, and both work fine. I have install in my Node.js directory the Thingdom ('neo4j') module in the directory, but when require('neo4j') prints an error.
Image of my Node.js folder with Neo4j installed in modules
var neo4j = require("neo4j");
var db = new neo4j.GraphDatabase("http://localhost:7474");
var node = db.createNode({hello: 'world'}); // instantaneous, but...
node.save(function (err, node) { // ...this is what actually persists.
if (err) {
console.error('Error saving new node to database:', err);
} else {
console.log('Node saved to database with id:', node.id);
}
});
And when using in the cmd: "node index.js" it throws me this error:
C:\Users\RRamos\Documents\Projects\test-neo4j>node index.js
module.js:341
throw err;
^
Error: Cannot find module 'neo4j'
at Function.Module._resolveFilename (module.js:339:15)
at Function.Module._load (module.js:290:25)
at Module.require (module.js:367:17)
at require (internal/module.js:16:19)
at Object.<anonymous> (C:\Users\RRamos\Documents\Projects\test-neo4j\index.js:1:75)
at Module._compile (module.js:413:34)
at Object.Module._extensions..js (module.js:422:10)
at Module.load (module.js:357:32)
at Function.Module._load (module.js:314:12)
at Function.Module.runMain (module.js:447:10)
I got the same problem. As there's no solution in this post, I just add mine.
After running $ npm init and $ npm install --save neo4j-driver, I copy and paste the neo4j example code in index.js:
var neo4j = require("neo4j");
var db = new neo4j.GraphDatabase('http://neo4j:<password>#localhost:7474');
And then I got the same error when running $ node index.js.
In my package.json, I found:
"dependencies": {
"neo4j-driver": "^1.1.0-M02"
}
It's neo4j-driver not neo4j. So replace it in index.js:
var neo4j = require("neo4j-driver");
var db = new neo4j.GraphDatabase('http://neo4j:<password>#localhost:7474');
Now you will get rid of the Cannot find module 'neo4j' error!
In addition, if you use the 1.1.0 version of neo4j-driver(for Neo4j 3.0.0+), you may get this error:
var db = new neo4j.GraphDatabase('http://neo4j:<password>#localhost:7474');
^
TypeError: neo4j.GraphDatabase is not a constructor
at Object.<anonymous> (D:\Codes\neo4j_test\server.js:2:10)
at Module._compile (module.js:541:32)
at Object.Module._extensions..js (module.js:550:10)
at Module.load (module.js:458:32)
at tryModuleLoad (module.js:417:12)
at Function.Module._load (module.js:409:3)
at Module.runMain (module.js:575:10)
at run (bootstrap_node.js:352:7)
at startup (bootstrap_node.js:144:9)
at bootstrap_node.js:467:3
It seems neo4j.GraphDatabase is only available in older version of neo4j-driver.
Here's the up-to-date tutorial of neo4j-driver.
Use the following code instead:
var neo4j = require('neo4j-driver').v1;
var driver = neo4j.driver("bolt://localhost", neo4j.auth.basic("neo4j", "<password>"));
// Create a session to run Cypher statements in.
// Note: Always make sure to close sessions when you are done using them!
var session = driver.session();
// Run a Cypher statement, reading the result in a streaming manner as records arrive:
session
.run("MERGE (alice:Person {name : {nameParam} }) RETURN alice.name", { nameParam:'Alice' })
.subscribe({
onNext: function(record) {
console.log(record._fields);
},
onCompleted: function() {
// Completed!
session.close();
},
onError: function(error) {
console.log(error);
}
});
I am new to node.js. I was trying a script which is using express module.
I have installed express, using,
npn install express
When I run the code I got the error
TypeError: Cannot read property 'handle' of undefined
at Function.app.use (c:\node_modules\express\lib\application.js:113:9)
at Object.<anonymous> (c:\node\uploadResize.js:13:6)
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)
at Function.Module.runMain (module.js:497:10)
at startup (node.js:119:16)
at node.js:901:3
How to solve this issue?
Here is my node script.
var http = require('http'), // Libraries
util = require('util'),
fs = require('fs'),
couch = require('cradle'),
connect = require('express'),
endsWith, // Internal Functions
determineMimeType,
upload;
connect()
.use(connect.bodyParser())
.use(upload)
.listen(3000);
upload = function (req, res, next) {
// function body
}
You need to assign upload a value before passing it to app.use
Use something like this:
var app = express();
app.configure(function() {
var hourMs = 1000*60*60;
app.use(express.static('c:\\node', { maxAge: hourMs }));
app.use(express.directory('c:\\node'));
app.use(express.errorHandler());
});
the code not is npm install express ??
then the dir node_modules in the same dir in witch you have your app
C:\node\node_modules
C:\node\app.js