Display an error when hooks are not executed

[jogelin]

Hello,

• I'm submitting a ...
  [ ] bug report
  [X] feature request
  [ ] question about the decisions made in the repository

• Do you want to request a feature or report a bug?
  It could be useful to see in the console log when a build_hooks.js file is not take in account because it does not "compile".

• What is the current behavior?
  None

• What is the expected behavior?
  Display an error or a warning

[shlomiassaf]

I'm sorry, I don't follow.

What do you mean be

it does not "compile".

You mean a situation where a hook file has syntax errors?

If so, the logic that handles it is here

Since it was done quickly I didn't spend time on checking file existence... just to make it work.
So when a file is missing the error is ignored but also when a JS file can't compile....

I'll gladly accepts a PR on this, should be a big deal.

[jogelin]

I was talking about JS file can't compile (sorry for my english ;))

I think if the file doesn't exist, it is ok to ignore it. It means we don't need hooks.

But if it exists and does not compile, we should add a warning or even throw an error. It means that we modify the file so we want hooks but nothing happen when we are building the library.