feat: Handling Failed Uploads

[vic10us]

Adding the ability to handle failed uploads. This is done by adding the 'load' event on the XMLHttpRequrest and looking for a status < 400. Instead of bubbling an error I went with the approach of setting the file UploadStatus to Failed (new enum value) and pushing it in the observable state with a type of 'failed'.

I felt this would be the least disruptive and most simple to implement.

[CLAassistant]

All committers have signed the CLA.

[jkuri]

thanks for your PR. can you please amend commit message to follow guidelines and update readme for documentation.

[vic10us]

Can you point me to the guidelines? Also, I have updated the sample application to show usage. There was no reference to documentation that I could find.

[jkuri]

please check https://github.com/angular/angular/blob/master/CONTRIBUTING.md#commit so we can generate changelog with new feature.

[vic10us]

I amended the commit message. Is it ok?

[jkuri]

please do

git rebase -i HEAD~3

mark second and third commit with s and leave commit message feat: add handling of failed uploads then save.

git push origin master -f

then please let me know.

[jkuri]

also, please update version in package.json so we can publish new version to npm.

[vic10us]

Bump to minor or patch? 7.2.0 or 7.1.1

[jkuri]

to minor.

[vic10us]

All requested changes done. :)

[avechuche]

Hi, this is not in production yet, right? Thx!

[vic10us]

Hi, this is not in production yet, right? Thx!

Not that I am aware of. PR is still open.

[Flyover-ArtSk]

@jkuri can u please merge this pr? This is important feature. Without this - uploader show UPLOAD DONE when server response with error

[tsmith-sdm]

bump