fs.watch auto reload commands on discord bot - node.js

I have been working on my Discord Bot Rxiqi and I've been wanting auto-reload commands when the file has changed... my code is
var folder = "./commands/";
fs.watch(folder, { encoding: 'UTF-8' }, (eventType, filename) => {
if (eventType ==="change") {
console.log(`Updating Command: ${folder+filename}`)
delete require.cache[require.resolve(folder+filename)];
client.commands.delete(folder+filename);
const props = require(filename);
client.commands.set(folder+filename,props);
}
});
But I keep getting this console output:
Updating Command: ./commands/adverts.js
Error: Cannot find module './commands/adverts.js'
at Function.Module._resolveFilename (module.js:547:15)
at Function.resolve (internal/module.js:18:19)
at FSWatcher.fs.watch (E:\BotDevelopment\Rxiqi\status\ready.js:62:38)
at emitTwo (events.js:126:13)
at FSWatcher.emit (events.js:214:7)
at FSEvent.FSWatcher._handle.onchange (fs.js:1364:12)
Updating Command: ./commands/adverts.js
Error: Cannot find module './commands/adverts.js'
at Function.Module._resolveFilename (module.js:547:15)
at Function.resolve (internal/module.js:18:19)
at FSWatcher.fs.watch (E:\BotDevelopment\Rxiqi\status\ready.js:62:38)
at emitTwo (events.js:126:13)
at FSWatcher.emit (events.js:214:7)
at FSEvent.FSWatcher._handle.onchange (fs.js:1364:12)
Any help is very much appreciated :)

What OS are you on? If you're on windows there is a problem as your '/' will not work

Related

Can't get a ws WebSocket server to run on Vite dev server. WS_ERR_INVALID_CLOSE_CODE

I'm trying to get a WebSocket server to run on top of Vite's built-in dev server. I'm grabbing the httpServer instance directly from Vite and asking ws to listen on it, and it gives a fatal error which I can't find mentioned anywhere on the web.
I tried manually listening for "upgrade" events on Vite's httpServer and calling ws.Server.handleUpgrade() myself, but that gives me the same exact error. If I run all the code and simply leave off the call to handleUpgrade() then it will stop giving any errors. The error definitely seems to come from handleUpgrade(), I just have no clue what the error means or how to fix it.
It should be noted that I'm using SvelteKit and TypeScript in this project. This is my vite.config.ts file:
import type { UserConfig } from 'vite';
import { sveltekit } from '#sveltejs/kit/vite';
import { WebSocketServer } from "ws";
const config: UserConfig = {
plugins: [
sveltekit(),
{
name: "webSocketServer",
configureServer: (viteDevServer: any) => {
const webSocketServer = new WebSocketServer({
server: viteDevServer.httpServer
});
}
}
]
};
export default config;
This is the error I get when running the npm run dev command:
node:events:491
throw er; // Unhandled 'error' event
^
RangeError: Invalid WebSocket frame: invalid status code 16001
at Receiver.controlMessage (C:\Users\MSJim\Documents\programming-data\visual-studio-code\frontends\sveltekit-websockets-chat\node_modules\ws\lib\receiver.js:566:18)
at Receiver.getData (C:\Users\MSJim\Documents\programming-data\visual-studio-code\frontends\sveltekit-websockets-chat\node_modules\ws\lib\receiver.js:442:42)
at Receiver.startLoop (C:\Users\MSJim\Documents\programming-data\visual-studio-code\frontends\sveltekit-websockets-chat\node_modules\ws\lib\receiver.js:158:22)
at Receiver._write (C:\Users\MSJim\Documents\programming-data\visual-studio-code\frontends\sveltekit-websockets-chat\node_modules\ws\lib\receiver.js:84:10)
at writeOrBuffer (node:internal/streams/writable:392:12)
at _write (node:internal/streams/writable:333:10)
at Writable.write (node:internal/streams/writable:337:10)
at Socket.socketOnData (C:\Users\MSJim\Documents\programming-data\visual-studio-code\frontends\sveltekit-websockets-chat\node_modules\ws\lib\websocket.js:1274:35)
at Socket.emit (node:events:525:35)
at addChunk (node:internal/streams/readable:324:12)
Emitted 'error' event on WebSocket instance at:
at Receiver.receiverOnError (C:\Users\MSJim\Documents\programming-data\visual-studio-code\frontends\sveltekit-websockets-chat\node_modules\ws\lib\websocket.js:1160:13)
at Receiver.emit (node:events:513:28)
at emitErrorNT (node:internal/streams/destroy:151:8)
at emitErrorCloseNT (node:internal/streams/destroy:116:3)
at process.processTicksAndRejections (node:internal/process/task_queues:82:21) {
code: 'WS_ERR_INVALID_CLOSE_CODE',
[Symbol(status-code)]: 1002
}
Where it reads invalid status code 16001, the 16001 seems to change every time I run it. I have gotten 39338, 38329, and 29320 when running it 3 additional times.

How to get PostgreSQL dump database file using Node JS

I tried to generate postgresql dump file using Node JS. SO, I used secure-backup library to generate pg-dump file encrypted. I add this package in my project and I configured .pem file also. When I execute this file it's throwing some error. but I couldn't understand what type error is throwing and how to fix it I don't know. Any one give some suggestion how to resolve this issue to generate pg dump file using Node JS otherwise different library used to generate pg dump file.
CODE
let secureBackup = require('secure-backup');
let pgHandler = require('secure-backup/lib/handlers/pg')
console.log('hi')
let backup = secureBackup({
pubKeyPath: 'C:/Users/DELL/Desktop/Twilio_Phone/cert.pem', // path to your public key
outputPath: 'C:/Users/DELL/Desktop/DB_Dump', // where to output your encrypted backup
compress: true, // enable compression (gzip)
handler: pgHandler({
user: 'postgres',
password: '*****',
database: '****'
})
})
backup() // can be invoked directly
// or used with a cron-job module like node-schedule
Error
events.js:292
throw er; // Unhandled 'error' event
^
Error: spawn pg_dump ENOENT
at Process.ChildProcess._handle.onexit (internal/child_process.js:269:19)
at onErrorNT (internal/child_process.js:465:16)
at processTicksAndRejections (internal/process/task_queues.js:80:21)
Emitted 'error' event on ChildProcess instance at:
at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
at onErrorNT (internal/child_process.js:465:16)
at processTicksAndRejections (internal/process/task_queues.js:80:21) {
errno: -4058,
code: 'ENOENT',
syscall: 'spawn pg_dump',
path: 'pg_dump',
spawnargs: [ '-U', 'postgres', 'HP', 'hummapi' ]
}

Unable to convert pdf to image on AWS Lambda

I have a Nodejs 8.10 lambda which converts pdf to png which was working fine untill few days ago.
This is the error which seems to be caused because of AWS update
https://aws.amazon.com/blogs/compute/upcoming-updates-to-the-aws-lambda-execution-environment/
{
Error: Command failed: convert -density 200 -quality 75 "/tmp/temp_file.pdf[0]" "/tmp/temp_file-0.png"
convert: unable to load module `/usr/lib64/ImageMagick-6.7.8/modules-Q16/coders/pdf.la': file not found # error/module.c/OpenModule/1278.
convert: no decode delegate for this image format `/tmp/temp_file.pdf' # error/constitute.c/ReadImage/544.
convert: no images defined `/tmp/temp_file-0.png' # error/convert.c/ConvertImageCommand/3046.
}
The error was resolved by adding this public layer which will stop working after July 22:
arn:aws:lambda:::awslayer:AmazonLinux1703
I tried creating ImageMagick Static Binaries for AWS Lambda.
I followed these instructions for ImageMagic version 6.9.10-5
https://gist.github.com/bensie/56f51bc33d4a55e2fc9a
https://imagemagick.org/download/ImageMagick-6.9.10-55.tar.gz
Folder structure for lambda:
I tried basic resize of png image:
var IM_PATH = "var/task/imagemagick/bin/";
process.env['LD_LIBRARY_PATH'] = 'var/task/imagemagick/lib/';
process.env['PATH'] = process.env['PATH'] + ':' + IM_PATH + ':' + process.env['LD_LIBRARY_PATH'];
var gm = require('gm').subClass({
imageMagick: true,
appPath: 'var/task/imagemagick/bin/',
});
gm('image.png')
.resize(240, 240, '!')
.write('/tmp/resize.png', function (err) {
if (!err) console.log('done');
else {
console.log(err);
}
});
Tried running on Node 8.10 and node 10.x lambdas and here the the errors:
1) Node 8.10
{ Error: Command failed: convert: UnableToOpenConfigureFile `delegates.xml' # warning/configure.c/GetConfigureOptions/677.
convert: NoDecodeDelegateForThisImageFormat `PNG' # error/constitute.c/ReadImage/560.
convert: NoImagesDefined `/tmp/resize.png' # error/convert.c/ConvertImageCommand/3235.
at ChildProcess.onExit (/var/task/node_modules/gm/lib/command.js:301:17)
at emitTwo (events.js:126:13)
at ChildProcess.emit (events.js:214:7)
at maybeClose (internal/child_process.js:925:16)
at Socket.stream.socket.on (internal/child_process.js:346:11)
at emitOne (events.js:116:13)
at Socket.emit (events.js:211:7)
at Pipe._handle.close [as _onclose] (net.js:567:12) code: 1, signal: null }
2) Node 10.x
{ Error: Command failed: var/task/imagemagick/bin/convert: error while loading shared libraries: libgomp.so.1: cannot open shared object file: No such file or directory
at ChildProcess.onExit (/var/task/node_modules/gm/lib/command.js:301:17)
at ChildProcess.emit (events.js:189:13)
at ChildProcess.EventEmitter.emit (domain.js:441:20)
at maybeClose (internal/child_process.js:970:16)
at Socket.stream.socket.on (internal/child_process.js:389:11)
at Socket.emit (events.js:189:13)
at Socket.EventEmitter.emit (domain.js:441:20)
at Pipe._handle.close (net.js:597:12) code: 127, signal: null }

Getting Error: spawn ./node_modules/.bin/grunt ENOENT when running grunt

I have a project that is started in development by
yarn start
It runs a index.js that starts a grunt process and get this error:
$ yarn start
yarn start v0.23.2
$ node ./development
grunt_arguments [ '--force', '--notify', '--verbose', '--debug', '--stack' ]
=======================================
Open http://localhost:8000 to start developing
events.js:141
throw er; // Unhandled 'error' event
^
Error: spawn ./node_modules/.bin/grunt ENOENT
at exports._errnoException (util.js:907:11)
at Process.ChildProcess._handle.onexit (internal/child_process.js:189:32)
at onErrorNT (internal/child_process.js:355:16)
at nextTickCallbackWith2Args (node.js:458:9)
at process._tickCallback (node.js:372:17)
at Function.Module.runMain (module.js:443:11)
at startup (node.js:139:18)
at node.js:990:3
error Command failed with exit code 1.
No idea what can it be. Environment is:
Win10
Running with MINGW64
I usually monkey patch child_process to help me debug that kind of issues. Add something like this in the beginning of your index.js file:
const util = require('util')
const childProcess = require("child_process");
const originalSpawn = childProcess.spawn;
childProcess.spawn = function() {
console.trace('SPAWN');
console.log('ARGS');
console.log(util.inspect(arguments, false, null)); // showHidden = false, depth = null
return originalSpawn.apply(this, arguments);
};
If your run, childProcess.spawn('ls', ['-lh', '/usr']) you will see something like:
Trace: SPAWN
at Object.childProcess.spawn (repl:2:9)
at myFunction (repl:2:14)
at repl:1:1
at REPLServer.defaultEval (repl.js:164:27)
at bound (domain.js:250:14)
at REPLServer.runBound [as eval] (domain.js:263:12)
at REPLServer.<anonymous> (repl.js:392:12)
at emitOne (events.js:82:20)
at REPLServer.emit (events.js:169:7)
at REPLServer.Interface._onLine (readline.js:210:10)
ARGS
{ '0': 'ls', '1': [ '-lh', '/usr' ] }
Maybe after running it you can update your question with the new information.

Creating a child process of a bash file in node

Below I have a string with newlines line, this string is the contents of a bash file. I was wondering if there was a way to run this contents without creating the bash file. I would like to do something like below, where I just pipe the contents to the sh command. But this blew up with the error below.
let string = "\necho \'hello-world\'\n"
execAsync(`${string} | sh`)
I know I can create a temp file / exec it with the path equal to the current working dir / delete the file. But I'd rather not go through the trouble if there's a way to run the script without creating a file.
Error:
{ Error: Command failed:
echo 'hello-world'
| sh
/bin/sh: -c: line 2: syntax error near unexpected token `|'
/bin/sh: -c: line 2: ` | sh'
at ChildProcess.exithandler (child_process.js:207:12)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:852:16)
at Socket.<anonymous> (internal/child_process.js:323:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:492:12)
cause:
{ Error: Command failed:
echo 'hello-world'
| sh
/bin/sh: -c: line 2: syntax error near unexpected token `|'
/bin/sh: -c: line 2: ` | sh'
at ChildProcess.exithandler (child_process.js:207:12)
at emitTwo (events.js:106:13)
at ChildProcess.emit (events.js:191:7)
at maybeClose (internal/child_process.js:852:16)
at Socket.<anonymous> (internal/child_process.js:323:11)
at emitOne (events.js:96:13)
at Socket.emit (events.js:188:7)
at Pipe._handle.close [as _onclose] (net.js:492:12)
killed: false,
code: 2,
signal: null,
cmd: '\necho \'hello-world\'\n | sh' },
isOperational: true,
killed: false,
code: 2,
signal: null,
cmd: '\necho \'hello-world\'\n | sh' }
Pass the script contents to the shell through the -c option. It is supported by most shells.
Example:
var execAsync = require('exec-async');
let script = "echo \'hello\' $(whoami)\nls -l\necho 'bye'"
execAsync('sh', ['-c', script]).then(console.log).catch(console.log);

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