maxtaco / iced-error Goto Github PK

Hi-

Not sure if you'd prefer a different channel for this kind of communication, but this seemed maybe better than e-mail/twitter...

Not really an issue with this repo specifically, but I've been using Iced Coffee Script for a project I've been working on for a few days, and I wrote a module to make some of the things I was doing over-and-over again a little bit easier.

https://github.com/ccheever/iced-cream

In general, I've been writing code with much more verbose and explicit logging of errors than most of the example code I've seen. This module makes that style a little easier at least.

The ErrorShortCircuiter in this repo seems interesting/promising. You might want to consider mentioning it on the ICS homepage. Getting the hang of how to handle errors reasonably in the async/callback driven world was one of the trickier things about ICS and generally makes me feel like I'm doing lots of typing to get anything done, mostly just handling error cases.

I my test script index.iced

{make_esc} = require "iced-error"

bar = (cb) ->
  esc = make_esc cb, "bar"
  # ...
  return cb "failed" # if statement
  # ...

foo = (cb) ->
  esc = make_esc cb, "foo"
  # ...
  await bar esc defer result
  cb null, "success"

do ->
  await foo defer error, result
  console.log {error, result}

I am waiting for {error: "failed", result: undefined},
but received

TypeError: Cannot call method 'push' of undefined
  at ipush (/home/user/project/node_modules/iced-error/index.js:82:23)
  at /home/user/project/node_modules/iced-error/index.js:95:11
  at bar (/home/user/project/index.iced:8:10)
  at /home/user/project/index.iced:17:9
  at foo (/home/user/project/index.iced:17:3)
  at console.log.error (/home/user/project/index.iced:21:9)
  at /home/user/project/index.iced:21:3
  at Object.<anonymous> (/home/user/project/index.iced:20:1)
  at Object.<anonymous> (/home/user/project/index.iced:1:1)
  at Module._compile (module.js:456:26)

What is the right way to use iced-error?

thx