Support JavaScript files?

[ghost]

I know that it's PHP-CS-Fixer. But XML, YML, Twig files are already parsed. How about JavaScript?

I know I can specify which files to parse in .php_cs but most fixers check if the file ends with PHP extension.

What do you think about adding support of JS extension in some fixers where it would make sense? E.g. CurlyBracketsNewlineFixer, PhpdocParamsAlignmentFixer, ReturnStatementsFixer, IndentationFixer.