Rule Suggestion: comma-dangle: always-multiline

[schtauffen]

comma-dangle: ["error", "always-multiline"]

It saves time when editing and prevents stupid errors.
If you've ever used golang then you probably know how awesome this rule is.

I am forced to use https://github.com/feross/eslint-config-standard until this is changed :'(

[dcousens]

#240
#400
#464

HTH

[qm3ster]

1. ES8 brings this to function parameter lists and calls (but lists and objects are more often multilined)
2. If you write for old browsers, you should transpile
3. It's one commit to --fix a codebase, much better than years of diffs with spurious highlighting