We Keep Coding

DateFormat.js SyntaxError: Unexpected token export

Using this with some Kubernetes PODS and one of the pods out of the blue gives me this error. It seems to come from the call on line 6. Have not changed anything was just doing a deployment on gitlab and noticed this POD said CrashLoopBackOff.
/app/config/auth.js line 6
var dateFormat = require('dateformat');
My nodemodules folder has the latest dateFormat.js from package.json
So not sure what the problem is. Does someone know how to fix it?
var token=/d{1,4}|D{3,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|W{1,2}|[LlopSZN]|"[^"]*"|'[^']*'/g;var timezone=/\b(?:[A-Z]{1,3}[A-Z][TC])(?:[-+]\d{4})?|((?:Australian )?(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time)\b/g;var timezoneClip=/[^-+\dA-Z]/g;export default function dateFormat(date,mask,utc,gmt){if(arguments.length===1&&typeof date==="string"&&!/\d/.test(date)){mask=date;date=undefined}date=date||date===0?date:new Date;if(!(date instanceof Date)){date=new Date(date)}if(isNaN(date)){throw TypeError("Invalid date")}mask=String(masks[mask]||mask||masks["default"]);var maskSlice=mask.slice(0,4);if(maskSlice==="UTC:"||maskSlice==="GMT:"){mask=mask.slice(4);utc=true;if(maskSlice==="GMT:"){gmt=true}}var _=function _(){return utc?"getUTC":"get"};var _d=function d(){return date[_()+"Date"]()};var D=function D(){return date[_()+"Day"]()};var _m=function m(){return date[_()+"Month"]()};var y=function y(){return date[_()+"FullYear"]
SyntaxError: Unexpected token export
at Module._compile (internal/modules/cjs/loader.js:760:23)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:827:10)
at Module.load (internal/modules/cjs/loader.js:685:32)
at Function.Module._load (internal/modules/cjs/loader.js:620:12)
at Module.require (internal/modules/cjs/loader.js:723:19)
at require (internal/modules/cjs/helpers.js:14:16)
at Object.<anonymous> (/app/config/auth.js:6:18)
at Module._compile (internal/modules/cjs/loader.js:816:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:827:10)
at Module.load (internal/modules/cjs/loader.js:685:32)
at Function.Module._load (internal/modules/cjs/loader.js:620:12)
at Module.require (internal/modules/cjs/loader.js:723:19)
at require (internal/modules/cjs/helpers.js:14:16)
at Object.<anonymous> (/app/config/passport.js:8:18)
at Module._compile (internal/modules/cjs/loader.js:816:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:827:10)```

Was able to fix it by downloading an older version of dateformat. Nothing wrong with my code on the question its a simple problem with the library not the code come on.

Here I could make it work by using another version of this package,was working in the version 4.6.3, so I did:
npm i dateformat#4.6.3

Cannot access child_process API

I have the following tiny program.js which tries to execute a binary file:
var childProcess = require('child_process');
var path2Binary = '/home/myuser/myproj/bins/mybin';
var par = '--file=' + '/home/myuser/myproj/files/myfile.txt';
var ret = childProcess.execFileSync(path2Binary, [par]);
if (!ret) throw 'Error invoking process!';
var cnt = ret.stdout;
if (!cnt) throw 'Error retrieving output!';
console.log(cnt);
The program tries to execute a binary file and passes it a parameter (a file). The output of this process will be then displayed.
I try to run this: node program.js, but get the following
var ret = childProcess.execFileSync(path2Binary, [par]);
^
TypeError: Object #<Object> has no method 'execFileSync'
at Object.<anonymous> (/home/myuser/myproj/program.js:6:24)
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:929:3
More information
I am running on CentOS, Node version is v0.10.36.
I tried running sudo yum install nodejs, but it tells me it is already installed so Node installation looks kinda good.
What's the problem?
On a side note...
If I replace childProcess.execFileSync with childProcess.spawn I get the same.
If I change the first line into the following:
var exec = require('child_process').execFileSync;
Then I get an undefined exception on exec.

Synchronous child processes aren't supported in node v0.10.36 - https://nodejs.org/docs/v0.10.36/api/child_process.html
Looks like it may have been introduced in 0.12.

Unexpected token ILLEGAL while running node.js mocha test

I have searched all over but have not figured out what I am doing wrong. I am trying to set up mocha for testing node.js javascript application files. I have node installed and have successfully ran basic things on it to confirm it is working.
I installed mocha in my project file, and also have a Makefile and a file called "test" within my project file as well.
Here is the error my terminal(osx 10) is spitting out when I run the command "make test".
humbleMousesMBP:chapter02 humbleMouse$ make test
/Users/humbleMouse/chapter02/test/exchange.test.js:22

^
SyntaxError: Unexpected token ILLEGAL
at Module._compile (module.js:439:25)
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 Module.require (module.js:364:17)
at require (module.js:380:17)
at /Users/humbleMouse/chapter02/node_modules/mocha/bin/_mocha:313:27
at Array.forEach (native)
at load (/Users/humbleMouse/chapter02/node_modules/mocha/bin/_mocha:310:9)
at Object.<anonymous> (/Users/humbleMouse/chapter02/node_modules/mocha /bin/_mocha:301:1)
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:906:3
make: *** [test] Error 8
This is the test I am trying to run:
'use strict';
var assert = require('assert')
, should = require('should');
var exchangeData = {};
suite('exchange', function() {
test('buy should add a BUY nockmarket order', function(done) {
exchangeData = exchange.buy(40, 100, exchangeData);
exchangeData.buys.volumes[40].should.eql(100);
done();
});
test('sell should add a SELL nockmarket order', function(done) {
exchangeData = exchange.sell(41, 200, exchangeData);
exchangeData.sells.volumes['41'].should.eql(200); //this is line 22
done();
});

test('sell should produce trades', function(done) {
exchangeData = exchange.sell(40, 75, exchangeData);
exchangeData.trades[0].price.should.eql(40);
exchangeData.trades[0].volume.should.eql(75);
exchangeData.buys.volumes[40].should.eql(25);
exchangeData.sells.volumes[41].should.eql(200);
done();
});
});

There are some invalid characters in your code, if you used proper text editor, you'd see them. The line numbering is a bit off, but this is clearly the cause.
Here's a screenshot from Sublime Text:
It's \uFFFC, more info here.
Just delete them (they can't be seen, so delete all from the semicolon to the next test().

Node.js "Cannot read property 'prototype' of undefined" error - Node.js, MongoDB and Angularjs book

I am working through Brad Dayley's Node.js, MongoDB and Angularjs book and I'm stuck on one of his exercises (Listing 4.4). I have a simple script emitterListener.js that is as follows the script is designed to makes checks on an account.
var events = require('events');
function Account() {
this.balance = 0;
events.EventEmitter.call(this);
this.deposit = function(amount) {
this.balance += amount;
this.emit('balanceChanged');
};
this.withdraw = function(amount) {
this.balance -= amount;
this.emit('balanceChanged');
};
}
Account.prototype._proto_ = events.EventEmitter.prototype;
function displayBalance() {
console.log("Account balance: $%d", this.balance);
}
function checkOverdraw() {
if (this.balance < 0) {
console.log("Account Overdrawn!!!!!");
}
}
function checkGoal(acc, goal) {
if (acc.balance > goal) {
console.log("Goal Achieved!!!!!");
}
}
var account = new Account();
account.on("balanceChanged", displayBalance);
account.on("balanceChanged", checkOverdraw);
account.on("balanceChanged", function() {
checkGoal(this, 1000);
});
account.deposit(220);
account.deposit(320);
account.deposit(600);
account.withdraw(1200);
When I run this I get the error.
TypeError: Object #<Account> has no method 'on'
at Object.<anonymous> (/Users/506132/web/emitterListener.js:35:9)
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:906:3
From my limited understanding after researching I think this means that the "on" module is not being loaded. I found a solution that suggested something similar to adding this to line 1
var events = require('events').on;
which then results in the error.
TypeError: Cannot read property 'EventEmitter' of undefined
at Object.<anonymous> (/Users/506132/web/emitterListener.js:16:35)
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:906:3
Following the logic from the first fix I tried implementing the same fix but with EventEmitter
var events = require('events').EventEmitter;
Hooray it looks like it worked.... or not......and now I get this error
TypeError: Cannot read property 'prototype' of undefined
at Object.<anonymous> (/Users/506132/web/emitterListener.js:17:48)
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:906:3
I tried adding the below code thinking why not?
var events = require('events').prototype;
and it just brings me back to the same error from before
TypeError: Cannot read property 'EventEmitter' of undefined
at Object.<anonymous> (/Users/506132/web/emitterListener.js:16:35)
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:906:3
What am I doing wrong here? How should I go about debugging this and where should I look? Thanks in advance for helping a newbie out.
Cheers.

process.EventEmitter is deprecated, use require('events') instead.
Search through all your reference files (should be in multiple files) for:
var EventEmitter = process.EventEmitter
An where ever it exists, change that line to this:
var EventEmitter = require('events')

I'll post it as an answer so this question won't get marked as unanswered.
You should change:
Account.prototype.__proto__ = events.EventEmitter.prototype;
to:
Account.prototype = Object.create(events.EventEmitter.prototype);

var EventEmitter = process.EventEmitter
is deprecated in high version of node, use var EventEmitter = require('events') instead

This compilation error because of versions conflicts of npm and node. I had the same issue in my project. I resolved after install the same compatible versions of npm and node as on another machine.
Check:
nmp -v
and
node -v.

All the confusion with the actual example is the first line of code.
var events = require('events');
After Node v6.1.0 this line of code will store EventEmmiter object inside events variable, so there is no need to access it explicitly later.
Solution is very simple, just change
events.EventEmitter.call(this);
to:
events.call(this)
And change
Account.prototype._proto_ = events.EventEmitter.prototype;
to:
Account.prototype._proto_ = events.prototype;

I had the same problem a few minutes ago, I decided to downgrade node to version 6.x, then it worked

Error in module export with Node.js

I have an issue with exporting a module in Node.js.
Here is a part of my code:
var zmq = require('zmq');
var module = require('module');
var DeviceRequester = function(port, name)
{
...
};
var SMValueGetter = function(socket)
{
...
};
module.exports.DeviceRequester = DeviceRequester;
module.exports.SMValueGetter = SMValueGetter;
When I use it I get the following error:
module.exports.DeviceRequester = DeviceRequester;
^
TypeError: Cannot set property 'DeviceRequester' of undefined
at Object.<anonymous> (<PROJECT_PATH>/node_modules/lse/lib/lse.js:168:32)
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 Module.require (module.js:364:17)
at require (module.js:380:17)
at Object.<anonymous> (<PROJECT_PATH>/server.js:6:13)
at Module._compile (module.js:456:26)
at Object.Module._extensions..js (module.js:474:10)
I have no idea why it occurs. I've red the Node.js documentation and some tutorials about exporting modules and all of them do it that way. Am I overlooking something?

Give more attentions at errors
TypeError: Cannot set property 'DeviceRequester' of undefined
at line var module=require("module"); you are overwriting the default module variable.
simple try to change at something that makes more sense, such as
var MyModule=require(..path..)