Error Handling in NodeJS (Complete Guide) | Node Tutorial

In this video you'll learn about what kinds of errors to handle in NodeJS, how to best handle them, and how to create your own custom errors.
Code: github.com/nikitapryymak/node...
Node Middleware: • What is middleware in ...
Node Request Validation: • How to Validate Reques...
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#nodejs #javascript #api

[@ljhastr]

As someone who is learning Node and finished with the basics of mongoDB & mongoose, error handling was still a little unclear to me. This helped out massively, thank you! earned a sub.

[@mma-dost]

Same bro I was not able to clearly understand error handling.

[@rohanshrestha8302]

@@mma-dost Hey bro can you suggest some sites or mentors you followed to learn node

[@emmafountain2059]

Not only helped with JS error handling, but was a great introduction to error handling abstraction in general. This was a huge help!

[@emkay2]

The flow of your explanation just makes each step of the tutorial fall into place instantly. Thanks a lot!

[@jomarkpangan9362]

Really great video. Clear, concise, fast. Just how I like it. subscribed!

[@perenelm4988]

Very straightforward explanation, thanks!

[@khatariinsaan5284]

You will definetely going to become a successful youtuber
Just keep uploading Regularly !

[@josephuzuegbu7431]

This is the best error handling tutorial I have watched. Thanks

[@_V__.]

I just came across a similar implementation in an old project at work, shame I didn’t watch this before then, it would’ve helped me a lot. Awesome video!

[@mma-dost]

Thanks I really watched many tutorial about this topic but none was like yours. Thanks sir 💯💯

[@TrangBui-seeu]

This video is really helpful and straightforward. I can now know what’s wrong with my project properly 😂

[@itsmess1088]

Super excellent video that really helps me a lot during refactoring the node project!! Thank you so much😃

[@VipulPatel-cd6sm]

Very well explained 👍.
Thanks man.

[@danielhaynes4747]

Great video man! Keep up the good work and it will pay off! Thanks for the knowledge.

[@nikita-dev]

thank you!

[@qgatss]

Thanks bro! This was really helpful, please keep uploading

[@plasthree]

This is the most beautiful way i have seen 😮. Thanks so much.

[@Aelsaan]

Thx a lot for this simple and efficient tutorial

[@pytha12]

Great job! 👏 Keep it up!

[@manassingh1793]

You earned a sub man. What a fantastic video.

[@Talel_kraiem]

Amazing tutorial ❤

[@Anarchistry]

Error handling strategies was unclear for me like the "this" keyword. tnx for giving us ideas regarding on effective error handling. keep it up ❤

[@anahitafakhravar1878]

You helped me a lot. Thank you so much.

[@ycombinator765]

bro please keep these quality videos coming. please

[@NoeVidal3]

Wow, thanks man! great video!!

[@usamajaved3231]

To the point. Subscribed👍👍

[@omsatpathy5455]

very clearly explained.

[@vignesh-xb5uz]

Lastly I found right one❣️

[@sachintharuka6154]

Helpful video❤

[@renkzk_dev]

thank you, very helpful

[@prafulsrivastava8942]

Great content!

[@Programandoenc]

Hello! Thank you for the video! Is this the correct way to handle errors for a production environment ? I've read its a good approach to add graceful shutdown. What do you think ? and where or when should we add this ?

[@aleksey6151]

Amazing

[@mma-dost]

really great bro . respect++

[@baruntiwari8152]

Awesome bro... panda gang op

[@parthkolgiri7501]

Thanks man!

[@user-qv7js8qu9d]

very helpful

[@shiekkaleem4539]

I have 4 years experience and i was handling errors inside the controller...this is more Clear

[@hafidnurfirmansyah2839]

New subcriber

[@nelsonleone2508]

Please which extension are you using ?
The grey intellisense, seems like tabnine but i guess it's not

[@27sosite73]

super!

[@rohanshrestha8302]

Hello there, I am kind of new to node, and as I'm learning all the videos seem to focus just on file read and write, events and http request, it that all of it in node, as documentation is not similar to laravel, it is a bit hard for me to switch please help

[@MrGangel77]

How do you export the actual AppError class and use it in those other files? You don't seem to do that but I'm having to do module.exports for that class then importing it in the other files??

[@nikita-dev]

I'm exporting the AppError class by doing:
module.exports = AppError;
then importing it by doing:
const AppError = require("./AppError");
I have a video about Node JS module imports/exports if you want to learn more about how this works!

[@MrGangel77]

@@nikita-dev cheers. I emailed u too :P

[@fadfooood]

Why do I need to throw an error and then catch it?
I mean if !user then return next(error);
Is there any benefit or throwing and catching again?

[@nikita-dev]

Great question! The benefit is that all of your error handling code will be in one place -- the error handler middleware -- and it will reduce repetition. If you were to send the error response in your controllers (instead of passing the error on), you would have to write "res.status(400).send(msg)" every time. Once your routes become complex and there are multiple different checks, you would be repeating yourself a lot.
It's much cleaner to just pass the error on to the error handler middleware, and then define the error response there (once).

[@mma-dost]

thanks for asking the doubt bro I was also used to think why not just send res.json(error).status(400) like that.

[@himansuiii]

Thankssssssssssssssss

[@zakaria2504]

How about to write tryCatch function in such form:
exports.tryCatch = fn => (req, res, next) => fn(req, res, next).catch(next);
Looks cleaner

[@abdulazeez.98]

I had to dislike this video, the explanation was good but you covered Express error handling, not Node. By that I mean the ones which crash the node server.

[@davorjovanovic7174]

Perfect explanation!

[@nikita-dev]

thank you!

[@27sosite73]

super!