Clash Royale CLAN TAG#URR8PPP

Nodejs not always showing errors

I'm starting to learn js and nodejs. I had an issue which took me a long time to resolve.

I was using bcrypt library and i made a typo on require statemant:

const bcrpyt = require('bcryptjs');

const bcrpyt = require('bcryptjs');

then on my pre save schema i used:

bcrypt.hash(user.password, 10, (err, hash) =>
user.password = hash;
next();
);


so bcrypt was undefined

bcrypt

undefined

on my route I had:

user.save()
.then(/*some action*/)
.catch(e => res.status(400).send(e));


so after making a request, I got status 400 but e was empty object

e

Any idea why there was no error such as "calling hash on undefined" or something like that?

console.log(e)

throw

err

bycrypt.hash

console.log(e)

send(e)

bcrypt.hash

1 Answer
1

You can send only the message to the client:

res.status(400).send(e.message)

res.status(400).send(e.message)

I don't know if you are using express.js or plain node.js but if you want to see these errors on the client side you can wrap the entire server request code in a try catch block like so(using vanilla nodejs):

http.createServer(function(request, response)
try
response.writeContinue(undefinedVariable);
catch (error)
response.status(400).end(error.message);

).listen(port);


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