comment-format: whitelist //region comments

[01e9]

PR checklist

• Addresses an existing issue: fixes #0000
• New feature, bugfix, or enhancement
  • Includes tests
• Documentation update

Overview of change:

Continuation of #197

JetBrains IDE screencast https://streamable.com/4sxnz

CHANGELOG.md entry:

[enhancement] comment-format rule now whitelists //region comments generated by JetBrains IDE

[palantirtech]

Thanks for your interest in palantir/tslint, @01e9! Before we can accept your pull request, you need to sign our contributor license agreement - just visit https://cla.palantir.com/ and follow the instructions. Once you sign, I'll automatically update this pull request.

[adidahiya]

Hi @01e9, can you please provide more information around this code change? There is no associated issue and I don't know much about JetBrains IDE. I need to know a lot more context before I can consider this PR.

[01e9]

@adidahiya JetBrains IDEs have this feature in menu "Code > Surround with > region" https://streamable.com/4sxnz
I use it in Js, PHP, C++. Only TSLint complains about missing space between // and region

[adidahiya]

Which versions of JetBrains IDE does this apply to? You'll have to update the code comment on the previous line too.

[01e9]

I tried to find some JetBrains docs about this comment but without success.
I am using it for almost one year already. So it's not something new added in latest version.

[VincentLanglet]

https://blog.jetbrains.com/phpstorm/2012/03/new-in-4-0-custom-code-folding-regions/

As you can see there are two custom folding items: “<editor-fold..>” for NetBeans-like style and “region..endregion” for VisualStudio style.

[oleg-mtr]

How soon will this be included in release?

Now I fix manually the //region comments generated by IDE (add space // region) to prevent TsLint warning. I would like to stop doing that.