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Node.js® is a JavaScript runtime built on Chrome's V8 JavaScript engine. Node.js uses an event-driven, non-blocking I/O model that makes it lightweight and efficient. Node.js' package ecosystem, npm, is the largest ecosystem of open source libraries in the world.

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I want to import starting from the root folder, not go several folders down.
How do I do that?

I come across this issue while trying to import a guestbook (like it's 1999) script for my homepage.

import MyGuestbook from '../../components/MyGuestbook.vue'

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compiles.

import MyGuestbook from '/src/components/MyGuestbook.vue'

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doesn't compile.

GuestBookPage.vue

    <template>
    <div>
        <MyGuestbook />
    </div>
    </template>
    
    <script>
    import MyGuestbook from '../../components/MyGuestbook.vue'
    
    export default {
      name: 'GuestbookPage',
      components: {
        MyGuestbook
      }
    };
    </script>

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MyGuestbook.vue

     
<template>
      </div>
      </div>
    </template>
    
    <script src="non-editable-comments-v0.1.0.js"></script>
    <script>
      window.safeComments('CommentTitle', 'CommentTargetID');
    
      export default {
        name: 'MyGuestbook'
      };
    </script>

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I understand that I need to use webpack, but my project uses neutrinojs/vue (Recommended for the type of project) in combination with webpack. I'm not familiar with either of them. So far adding a _webpack.config.js_ and changing the import line to `import MyGuestbook from '@/components/MyGuestbook.vue'` has not worked.

    module.exports = {
      resolve: {
        extensions: [
          '.js', '.vue', '.json'
        ],
        alias: {
          '@': resolve('src'),
          '@root': resolve('.')
        }
      }
    };

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Nor has editing _.neutrinorc.js_

    module.exports = {
      use: [
        '@neutrinojs/standardjs',
        [
          '@neutrinojs/vue',
          {
            html: {
              title: 'MySite'
            }
          }
        ],
        '@neutrinojs/jest',
        (neutrino) => {
    	  neutrino.config.resolve.extensions
    	    .add('.js')
    	    .add('.json')
    	    .add('.vue');
    		
          neutrino.config.resolve.alias
          .set('@', 'src')
          .set('@root', '.');
    	}
      ]
    };

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the error:


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0
I am trying to retrieve the average value from a PostgreSQL database using a Sequelize ORM with React on the front end and running Node.js server.  My 'GET' request on the Node side retrieves all of the data from the PostgreSQL database so I know everything is wired up with React using the following code:

module.exports = function (db, app, bodyParser) {


    app.use(bodyParser.json());
    app.use(bodyParser.urlencoded({ extended: false }));

    app.get('/survey_init', function(req, res, next) {
        db.answers.findAll({})
        .then(function (data) {

            res.send(data);
              })
          .catch(function (err) {
            return next(err);
          })
        });
        
    }

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However, when I attempt to run an average on a specific column called 'conf_one' in my PostgreSQL database I get an error.  I will list the modified code (modified from code above) that is throwing the error here:

module.exports = function (db, app, bodyParser) {


    app.use(bodyParser.json());
    app.use(bodyParser.urlencoded({ extended: false }));

    app.get('/survey_init', function(req, res, next) {
        db.answers.findAll({
          attributes: ['conf_one', [models.Sequelize.fn('AVG', models.Sequelize.col('conf_one')), 'conf_one_avg']]
        })
        .then(function (data) {

            res.send(data);
              })
          .catch(function (err) {
            return next(err);
          })
        });
        
    }

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The error that I get with the code is the following error and I do not get the result of an average calculation.


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0
Hi,

I have a task in AWS that is started by ECS. I have developed a Cloudformation script that creates the ECS cluster, service, task definitions and containers.

The EC2 instances (2 to begin with) are initiated and are healthy. ECS then creates the tasks on each EC2 instance. However, have 1 minute, the tasks are stopped by ECS and it tries to recreate it. I presume this is something to do with the scheduler on AWS and not getting a healthy check back.

It is a node app running on port 300 which is mapped to the container. If I login to the EC2 instance and do a simple curl 127.0.0.1:32XXX (host port) then I get "no reply from server". Ok so it is something wrong with the image or container.

However, if I launch my own container of the same image publishing the ports ("docker run -d -p 32810:3000 <image> yarn start") and then do curl 127.0.0.1:32810 then I get a response from the server.

I cannot figure out how to debug this as there are no logs with any errors. Anyway..(I created the one on port 32810) the image is the same in both. I can only figure it is something to do with what the ECS agent does when it boots a task.

48ccad832ad2        <image>   "yarn start"        9 seconds ago       Up 8 seconds        0.0.0.0:32831->3000/tcp   ecs-test-InterfaceCogTaskDefinition-1UE2FONT2RQU3-1-InterfaceCog-f092fec2d9d1e8a90300
36016de55b81        <image>   "yarn start"        23 minutes ago      Up 23 minutes       0.0.0.0:32810->3000/tcp   practical_banach

0
I have a 2 node DAG Exchange 2013 CU19.
I am trying to delete any email older than 1/1/2016 for a specific user, but no matter what I do, I get nothing from searchquery filtering.
I Have confirmed Roll group Membership for Discovery Management and Mailbox Import Export.
I tried every format of double and single quotes for the date, and could not find anything.
I then tried to remove something from my mailbox, and get the same thing.
I sent me an email with subject test, and can not find it either.

I have tried:
search-mailbox -identity ttaylor -searchquery subject:test -estimatresulteonly
search-mailbox ttaylor -searcquery subject:test -estiamateresultonly
search-mailbox -identity ttaylor -searchquery "subject:test" -estimatresulteonly
search-mailbox ttaylor -searcquery "subject:test" -estiamateresultonly

I always get the same output
RunspaceId       : 304008d0-fa23-40d9-8867-d6ea567d5b9c
Identity         : Domain/ou/Tim Taylor
TargetMailbox    :
Success          : False
TargetFolder     :
ResultItemsCount : 0
ResultItemsSize  : 0 B (0 bytes)

Any suggestions
0
I had this question after viewing Change a specific key value in app.config file with another value..

i have  a config file as below
<meeServices>
  <edmServers>
    <server name="EDMServer" description="EDMServer" username="" password="" integratedSecurity="true" />
  </edmServers>
  <rdmServers>
    <server name="EDMServer" description="EDMServer" username="" password="" integratedSecurity="true" />
  </rdmServers>
  <settings>
    <add name="ExposureSource" value="path" />
    <add name="DomainDatabase" value="Server=HeadNode;Initial Catalog=RMS_MEE_Data;Integrated Security=True;" />
    <add name="ResultsDatabase" value="Server=HeadNode;Initial Catalog=RMS_MEE_Results;Integrated Security=True;" />
    <add name="JobManagerService" value="url" />
    <add name="licensecode" value="code" />
    <add name="WhiteListedIPAddresses" value="*" />
  </settings>
</meeServices>

 in settings , i want to change the name which contains licensecode to newcode. how do i do this.

$ConfigFile = 'C:\Users\psman\Downloads\dev_qa.config'
## XML Node names and Attributes are CaSe SeNsItIvE!
$xml = [xml](Get-Content -Path $ConfigFile)

$xml.SelectSingleNode("meeservices/settings/add[@name='licensecode']").SetAttribute("name", "data1")

$xml.Save($ConfigFile)
0
Hello,
I am creating a basic user authentication using nodejs, express.js and Passport.js.
I follow this example and it kind of works for me:
https://github.com/passport/express-4.x-local-example/blob/master/server.js

BUT, I would like to modify this demo to not have routes and not a template engine (ejs)

I have a folder with a bunch of static html files I would like to protect.
admin/
         /login.html
         /page1.html
         /page2.html
         /page3.html

I would like to password protect access to all html file under admin using basic authentication, but without routes.

In other words, I would like to access wepage.com/page2.html or any other html page and be redirected to login page, after logging in, I would like to be redirected back to page2.html and after that I could access the rest of the html pages without having to login. wepage.com/page4.html, wepage.com/page3.html, etc

The reason I don't want to have routes is because new html pages are added all the time and I don't want to keep creating routes for new ones or remove routes when deleting html pages.
Also, I don't really need a template engine since my pages are static html and I would like people to access the html directly. wepage.com/page1.html

The only requirements I have is nodejs, express.js and Passport.js.

Can someone please guide me or point me to an example to accomplish this?

Thanks
EMimi
0
So i have a user schema like this:

var user_schema = new Schema({
   username:{type:String,required: true, unique : true, trim: true},
   college:{type:String,required: true},
   password:{type:String,required: true, trim: true},
   email:{type:String,required: true, unique : true, trim: true},
   phone:{type:Number,required: true, unique : true, trim: true},
   dp:{type:String},
   tag:{type:String},
   description:{type:String},
   friends:[{type:String}],
   pending:[{type:String}],
   skills:{type:String},
   bucket:[{type:String}]
  });

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and my objective is, to search the all the documents in the collection to get people based on the following conditions:

1. They should not be in the users' "friends" array.
2. They should not be in the users' "pending" array.
3. They should have the same "tag" (a string value) as the user.

So, basically I have to compare the users' fields ("friends","pending" and "tags"), with fields of all documents in the whole collection.

How do I do it, using mongoose (nodejs mongodb library)
0
I have to initialize an array to [](empty array) and then push user chose "tags" into it. This is my schema:

 var user_schema = new Schema({
   username:{type:String,required: true, unique : true, trim: true},
   college:{type:String,required: true},
   password:{type:String,required: true, trim: true},
   email:{type:String,required: true, unique : true, trim: true},
   phone:{type:Number,required: true, unique : true, trim: true},
   dp:{type:String},
   tags:[{type:String}],
   description:{type:String},
   skills:{type:String},
   bucket:[{type:String}]
 }); 

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` and i have to initialize "tags" to [] and push user string values (user entered/chosen) every time the request is made to the API call.

I am using this line of code:

 stu_user.findOneAndUpdate(
   { _id: req.decoded.id },
   { $set:{tags:[]},$push: { tags: 'some chosen string'  } },
  function (error, success) {
         if (error) {
            console.log(error);
        } else {
            console.log(success);
        }
    });

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But it's not working.
0
I'm a complete beginner so I may have made some stupid mistakes. I made this script with x-ray to scrape user's phone number pictures from different website pages. The script was working very well until it reaches a page where the user didn't put his number in the page and the script stops.

How can I make it continue to the next page even if the phone number doesn't exist? and is there a way to make the script save the pictures directly to my computer instead of giving me the links?
 const Xray = require('x-ray');
const requesst = require('request');
const fs = require('fs');

const xray = Xray()

xray('https://www.marocannonces.com/categorie/350/Appareils-photos,-caméscopes/annonce/6503723/Nikon-D40x-objectif-18-135mm.html', 'div.infoannonce', [{
	numero: '#phone_number img@src',
	nom: '.infoannonce dd',
}])

.paginate('a.next_ad_link@href')
.write('results.json'); 

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0
i'm beginner to Node JS and javascript. Now everybody is saying to learn Node JS and javascript to develop a fastest, scalable and very good web application.

I thought of developing via Zk or Vaadin framework and experts says Node Js and javascript is far better than Zk or Vaadin

Could someone help with the thoughts and recommendation of which one to go and which one would be fast, reliable and scalable?

Like word press plugins, zk and vaadin components, Do we have a best java script framework which has huge components to integrate and create a beautiful and fastest responsive web app?

Thanks.
0
How to enable the movement of my html files in handlebars or .ejs? I have intended an html template in an .ejs file inside my node views and the slider does not move, another script that should move some numbers directly shows static without dynamism. How to solve this problem?



In my templating engine .ejs i can t see this 2 animations: (slider and animation numbers)

ejs slider

ejs animation
Hear is the code: https://github.com/casperverse/octoeffective/blob/tem/views/main/about.hbs

The slider and the animation numbers in html:

html slider and animation looks nice the move is great.

https://github.com/casperverse/octoeffective/blob/tem/public/about-us.html

I need use ejs this is the problem.
Somebody know how do this?
0
I have a Node project written in TypeScript where the application takes in user's input arguments and does some calculation and prints out the results. Take the example of a calculator the user inputs value of two numbers and it prints out the addition of two numbers. for example npm run calc 3 5. The application prints out 8.

The application is working but i want to make this an aws lambda function and deploy it in aws. The examples i see everywhere is hello lambda function. Can anyone help me how i can make a handler and deploy it to aws?

How do i convert the below hello function to a calc lambda function and deploy it to aws?
export const hello: Handler = (event: APIGatewayEvent, context: Context, cb:             
Callback) => {
const response = {
statusCode: 200,
body: JSON.stringify({
message: 'Go Serverless Webpack (Typescript) v1.0! Your function executed 
successfully!',
  input: event,
}),
};

cb(null, response);
}

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This is my addition class

export class Calc {
public static add(){

    console.log( this.addition( (process.argv[0] + process.argv[1] ));

}
public static addition(num1:number, num2:number)
{
    return num1 + num2;
}

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0
Hi,

My manager asked me updating a website from codeigniter to  
backend: API using PHP (Symfony) or node (expressjs) or Drupal 8 . or any other framework. can you give me explanations?

And for single page applications Angular 4 or Vue js
0
Hey, This is just a decision-making problem. I am seeking for a well thought out answer.
I have to develop an android XMPP chat application, (the application also has a NodeJS server API, connecting to MongoDB and AWS S3 for picture uploads)

which will be better:

1. Having a "openfire" server on aws and connecting it to the android application and implementing an XMPP client on the android device using "smack" library.

2. Implementing a "xmpp-client" on NodeJS server side and scrape the results from this API to the Android device.
0
We had same issue but unable to find cause. it happened at random time.No logs from ESX host,network switch. looks it is not communicating internally.error :
Cluster network interface 'node-03 - VLAN 10' for cluster node 'node-03' on network 'Cluster Network 1' failed. Run the Validate a Configuration wizard to check your network configuration. If the condition persists, check for hardware or software errors related to the network adapter. Also check for failures in any other network components to which the node is connected such as hubs, switches, or bridges.
Please advise solution
0
i am trying to run

npm install mysql

command in cmd its giving me these error

npm ERR! Unexpected end of JSON input while parsing near '....tgz"},"engines":{"no'

npm ERR! A complete log of this run can be found in:

npm ERR! C:\Users\HP\AppData\Roaming\npm-cache\_logs\2018-05-30T06_49_09_337Z-debug.log
0
I am writing a proxy app in nodejs which handles thousands of concurrent connections inwards and outwards, I want to make sure all idle and unneeded and ... connections get closed properly and their file descriptors get released. If it leaks file descriptors, I would run out of them very fast. my question is that what is the best solution to make sure a connection gets closed ? socket.end() or socket.destroy() ? currently I am using socket.end() but in doc it says it half closes the connection, is there a situation that socket.end() doesnt result in closing a connection ? what I am interested in is releasing the file descriptors ASAP. So what do you suggest ?
0
When I am trying to secure the users API; I am getting always 401 unauthorized. I have tried different variations to define strategy; but no luck. I have been using JWTStrategy and using jwtwebtoken while signing the token with the Secret and RS256 Algorithm

Passport.js

// import * as module from 'module';
const
  User = require('../models/user'),
  JwtStrategy = require('passport-jwt').Strategy,
  ExtractJwt = require('passport-jwt').ExtractJwt,
  config = require('./appconfig');

// Setting JWT strategy options
const jwtOptions = {
  // Telling Passport to check authorization headers for JWT
  jwtFromRequest: ExtractJwt.fromAuthHeaderWithScheme('Bearer'),
  // Telling Passport where to find the secret
  secretOrKey: config.jwtSecret,
  algorithms:['RS256']
  // TO-DO: Add issuer and audience checks
};

console.log(config.jwtSecret);
module.exports = function(passport) {
  passport.use(new JwtStrategy(jwtOptions, function(jwt_payload, done) {
    console.log(jwt_payload);
    User.findOne({id: jwt_payload.sub}, function(err, user) {
      if (err) {
          return done(err, false);
      }
      if (user) {
          return done(null, user);
      } else {
          return done(null, false);
          // or you could create a new account
      }
    });
  }));
};

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Index.Route.js
const express = require('express');
const userRoutes = require('./user.route');
const authRoutes = require('./auth.route');
// const postRoutes = require('./post.route');
const passport = require('passport');


passport.initialize();
var jwt = require('../config/passport')(passport);

const router = express.Router(); // eslint-disable-line new-cap

/** GET /health-check - Check service health */
router.get('/health-check', (req, res) =>
  res.send('OK')
);

// mount user routes at /users
router.use('/users', passport.authenticate('jwt', { session: false }), userRoutes);

// mount auth routes at /auth
router.use('/auth', authRoutes);

// router.use('/posts', postRoutes);

module.exports =  router;

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Using Postman: Header: Authentication: JWT Token

localhost:4040/api/users
0
I am unable to install nodejs on Solaris-10 x86 server. It is complaining about some libraries . Can somebody guide on this ?
-bash-3.2# cat /etc/release
                    Oracle Solaris 10 1/13 s10x_u11wos_24a X86
  Copyright (c) 1983, 2013, Oracle and/or its affiliates. All rights reserved.
                            Assembled 17 January 2013
-bash-3.2# pwd
/var/tmp/node-v8.11.2-sunos-x64/bin
-bash-3.2# ./node
ld.so.1: node: fatal: libsocket.so.1: version 'SUNW_1.7' not found (required by file node)
ld.so.1: node: fatal: libsocket.so.1: open failed: No such file or directory
Killed
-bash-3.2# ldd node
        libkstat.so.1 =>         /lib/64/libkstat.so.1
        libumem.so.1 =>  /lib/64/libumem.so.1
        libsocket.so.1 =>        /lib/64/libsocket.so.1
        libsocket.so.1 (SUNW_1.7) =>     (version not found)
        libnsl.so.1 =>   /lib/64/libnsl.so.1
        libsendfile.so.1 =>      /lib/64/libsendfile.so.1
        libstdc++.so.6 =>        (file not found)
        libm.so.2 =>     /lib/64/libm.so.2
        librt.so.1 =>    /lib/64/librt.so.1
        libgcc_s.so.1 =>         (file not found)
        libpthread.so.1 =>       /lib/64/libpthread.so.1
        libc.so.1 =>     /lib/64/libc.so.1
        libc.so.1 (ILLUMOS_0.17) =>      (version not found)
        libc.so.1 (ILLUMOS_0.8) =>       (version not found)
        libmp.so.2 =>    /lib/64/libmp.so.2
        libmd.so.1 =>    /lib/64/libmd.so.1
        libscf.so.1 =>   /lib/64/libscf.so.1
        

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0
Hi EE,

At the moment, I'm hosting my website on Heroku, and have come about a very frustrating issue I don't know how to approach.

My app uses React.js and Node.js -
In the index file (server.js), the following logic is used:

const express = require('express');
const fs = require('fs');
const path = require('path');

var app = express();
var PORT = process.env.PORT || 3001;

if ( process.env.NODE_ENV === "production" ) {
  app.get( '/*',  function ( req, res )  {
    app.use(  express.static("client/build")  );//This is the index.html that was build with React
  });
};

app.listen(PORT, ()=>console.log('listening on port ' + PORT))

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What the code does :
If we are in production, grab the build that was made in React.js and render it.

Here comes the problem..

When on the homepage,(  `/` )it renders perfectly.
But when we try to go somewhere like `about` or `contact`, Heroku will give me an error, because it thinks I'm making a request to the back end.

The React routing looks something like this:
class App extends Component {
  render() {
    return (
      <BrowserRouter>
        <Switch>
        <Route exact path='/' component={Landing}/>
        <Route path='/blogs' component={Blogs}/>
        <Route path='/blog' component={Blog}/>
        <Route path='/contact' component={Contact}/>

        <Route path="/ping" component={Pong} />
        </Switch>
      </BrowserRouter>
    );
  }
}

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Any insights into dealing with this deadly bug are greatly appreciated
0
I am trying to setup Mongoose and when I run NPM start I get the following error


Error: Cannot find module '.routes/users'
    at Function.Module._resolveFilename (module.js:547:15)
    at Function.Module._load (module.js:474:25)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/leotyndall/Desktop/node/nodeexpress/nodewebapp/app.js:12:13)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
    at tryModuleLoad (module.js:505:12)
    at Function.Module._load (module.js:497:3)
    at Module.require (module.js:596:17)
    at require (internal/module.js:11:18)
    at Object.<anonymous> (/Users/leotyndall/Desktop/node/nodeexpress/nodewebapp/bin/www:7:11)
    at Module._compile (module.js:652:30)
    at Object.Module._extensions..js (module.js:663:10)
    at Module.load (module.js:565:32)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! nodewebapp@0.0.0 start: `node ./bin/www`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the nodewebapp@0.0.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.

i do have a folder with the routes/ see the file uploaded

I am lost why it wont run
0
I'm having difficulty putting a complex(to me) aggregation query together for my data. Basically, here's the run down so everyone understands my conundrum.

I have two collections in this equation. "training_documents" and "users". Each user object has a key identified by name "trainings" which is an array of objects. Each object within this trainings array, contains 4 key/value pairs. An example of each object is below.

    {
    	"document": ObjectId('5a0350ad7df0977d94cffab6'),
    	"trainee": ObjectId('59e51a4b7df0977d94cff95d'),
    	"trainer": ObjectId('595fcc2e04cf707693257890'),
    	"completion_time": "2018-04-23T21:28:22.747Z"
    }

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The users trainings array will contain many objects following the aforementioned format.

An example user data structure is below for reference.

   
 [
    	{
    		"_id": "5ad782283c55b056bcc39e3z",
    		"site": {
    			"site_id": "site1",
    			"site_name": "Site One"
    		},
    		"user_name": "jsmith",
    		"first_name": "John",
    		"middle_name": "A",
    		"last_name": "Smith",
    		"full_name": "John Smith",
    		"title": "Duh Boss...",
    		"email": "testuser@example.com",
    		"last_login": "2018-04-27T14:27:27.014Z",
    		"type": "full-time",
    		"active": true,
    		"__v": 0,
    		"badge_id": "000001780343232123",
    		"trainings": [
    			{
    				"document": ObjectId('5ae33622a766885a121b7362'),
    				"trainee": 

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0
I'm trying to copy from table from one table to another. So i want to stream the large data in and as it comes in I want to copy the contents of that data to another table. Its more then just a straight copy. I will probably massage the data a bit and then copy it over to the new table. The problem that I'm having is that row event keeps firing and I can't control it. I tried using async and await where I was hoping to make it stop but does not seem to be working. I can't control an event from firing or not. This is what I have so far. So basically I want to simulate a cursor in MSSQL. I don't want to download all the data and then do operations on it.

I'm not showing the massaging of the data below since I just want to see if I can copy data from one table to another.

var fs = require('fs');
var sql = require('mssql');
var sql2 = require('mssql');
var Request = require('tedious').Request; 
var TYPES = require('tedious').TYPES;  
var SqlString = require('sqlstring');

const config = {
    user: 'xxxx',
    password: 'xxx',
    server: 'xxxx\\',
    port: 'xxxx',
    database: 'xxxx',
    options: {
        instanceName: 'sql2014'
    }
};


function insertRecord(pool, record){
    return new Promise(function(resolve, reject){

        const request = pool.request();

        request.input('invoice_id', sql.Int, record.invoice_id);

        request.query('INSERT INTO _invoice_temp(invoice_id)  VALUES(@invoice_id)', (err, result) => {
            if(err){
          

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Getting app.js:249 Service Worker Error TypeError: Failed to register a ServiceWorker: A bad HTTP response code (404) was received when fetching the script. When trying to access the service worker using JavaScript. Need help ASAP. I can add my code if needed.
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nodeJs and MongoDB
I Would like to  Create a dynamic navbar with mean stack a navbar that the admin can modify it navbar has
Main Categoy
Sub Categories title
sub category
example image https://prnt.sc/j3nxz7
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