middyjs/Lobby

🛵 The stylish Node.js middleware engine for AWS Lambda https://middy.js.org

Jose Santacruz

@joseSantacruz

Hi all, quick serverless question is there a way to preview the generated cloud formation files without building all the artifacts??

Chanlito

@chanlito

I found middyjs today, and I have to say, thank you, to @lmammino & all the contributors.

Luciano Mammino

@lmammino

@chanlito, thanks to your for trying middy :)

@joseSantacruz did you figure it out a way? I know that serverless framework has a command to build a package but not publish it, that way you should be able to see the cloudformation files

Thomas Edwards

@thomasedwards

I just found Middy today :heart_eyes:

Just casually re-writing my entire project now

dkatavic

@dkatavic

hello @thomasedwards . I hope you are gonna find it useful :smile:

Luciano Mammino

@lmammino

@thomasedwards looking forward to receiving your feedbacks :P

Today we just passed 200 stars!!! :)

Thomas Edwards

@thomasedwards

amazing!

has anybody ever had a Cannot destructure propertyhttpContentNegotiationof 'undefined' or 'null' error?

import middy from 'middy'

const {
  httpContentNegotiation,
  httpErrorHandler
} = middy.middlewares

const lovelyStuff = event => {
  // do stuff
}

const handler = middy(lovelyStuff)
  .use(httpContentNegotiation({ availableMediaTypes: ['application/json'] }))
  .use(jsonBodyParser())
  .use(httpErrorHandler())

export { handler }

I think it's because I'm using imports

Thomas Edwards

@thomasedwards

yup changed it to

const {
  httpContentNegotiation,
  httpErrorHandler,
  jsonBodyParser,
  validator
} = require('middy/middlewares')

Thomas Edwards

@thomasedwards

so when I import anything from middy/middlewares, I get the entire AWS library because of the S3 middleware?

this bumps up my file size from less than 1MB to 3.5MB

Thomas Edwards

@thomasedwards

done some digging and opened an issue: middyjs/middy#154

Luciano Mammino

@lmammino

Hello @thomasedwards , thanks a million for your contribution and sorry for the long wait, i was away for a conference :)

looking into your issue right now

Thomas Edwards

@thomasedwards

thank you! =)

have closed it, will investigate further

Thomas Edwards

@thomasedwards

also – any thoughts about giving more information from the validator? middyjs/middy#155

I have now realised that actually just editing the validator to pass the errors through as a string

rather than using 'Event object failed validation' would be possibly safer

Luciano Mammino

@lmammino

@thomasedwards thank you for pointing that out. I am currently slowly going over all the open issues an PR in my free time. I will try to address everything later this evening

Thomas Edwards

@thomasedwards

no worries! let me know if there's anything I can do to help

have replied to your comments, thanks @lmammino ! middyjs/middy#155

Thomas Edwards

@thomasedwards

Super loving 0.12 :thumbsup: Sooo much easier to debug now with the beautiful extreme logging – thanks team! :heart:

Thomas Edwards

@thomasedwards

Okay, I think I have a really tricky problem...

In one of my middlewares I have a promise that needs to return before it can continue

however, if I add async/await to the function, I get a whole load of errors and pain

Thomas Edwards

@thomasedwards

okay I found a way

I’m returning a promise to a variable set in the middleware

I don't do any async/await in the middleware

but then I await it when I use it later on

Andrea Falzetti

@rexromae_twitter

@vladgolubev hey mate, I'm trying to understand why the change that I've done to the docs, it's still not showing in the website. Did I miss any step?

Dan Van Brunt

@iDVB

HELP! Love Middy so far. Having an issue with writing jest tests with my custom middleware written with async/await. My middleware has a proper try/catch around the await. I've looked at the ssm middleware that is part of the core for ideas. My middleware works fine when I remove that single async call to S3. But with it I keep getting UnhandledPromiseRejectionWarning

Is there some special way to implement a middleware that uses async/await

Dan Van Brunt

@iDVB

@lmammino Would love if you have a moment to chime in on this. middyjs/middy#270 Seems like a current limitation when trying to test custom middleware.

F. Kiss

@filipekiss

Hey people, quick question: Does any one have an example of what type arguments Middy expects? The argument names aren't quite descriptive and I have no idea what I should pass to Middy<T, R, C> except for C because it extends Context

will Farrell

@willfarrell

I'm going to be in London for 2 weeks over christmas if anyone wants to get a pint and talk shop.

Sam Koucha

@ElectroMW

will Farrell

@willfarrell

There is a bunch of typescript issues in the backlog, anyone willing to triage and maybe submit PR's for them. I don't use typescript, so can't help here.

Thomas Edwards

@thomasedwards

Aww man I missed the Christmas meetup

will Farrell

@willfarrell

You didn't miss anything, no meetup happened. No FOMO here.

If anyone is in Calgary, be sure to hit me up.

Yoni Braslaver

@JoniBR

Hi, I have an issue where I throw an error object in one of the middlewares but on the onError function handler.error only holds the object.message property. any way to access the full object on the onError?

will Farrell

@willfarrell

Has anyone played around with Streaming json from lambda to oboejs or similar? Having trouble finding it in the documentation, is it called StreamingBody?

Alper Necati Akin

@alpernakin

Hello folk!

Does anybody know how to assign error message for validation on input schema object?

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