Implement trailing-comma tslint rule and enforce on generation

[intellix]

I'm working in a team of around 10 frontenders and there's 2 things which have given us no end of git conflicts over the years:

• trailing commas
• re-ordering of imports

Now we have a pre-compilation step, I'd like to enforce trailing commas for multi-line statements to avoid this:

<<<<<<< HEAD
'SomeModule'
=======
'SomeModule',
>>>>>>> branch-a

TSLint rule: https://palantir.github.io/tslint/rules/trailing-comma/

Is it possible to add trailing commas for multi-lines on the generation statements?

[Brocco]

This is a stylistic decision which would best be handled with custom blueprints/templates when they are that implemented.

Leaving this issue open as a placeholder.

[cacogr]

I think a lot of things in angular-cli are stylistic decisions, it's opinionated after all. If it helps reducing conflicts and has no drawbacks I'd welcome it, at least as default behavior.

[filipesilva]

Superseded by #6272, since that rule has a fixer it could be done there.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}