Sebastian Silbermann 3af02f63de Add --out-file-extension option to babel-cli (#9144)
* Add --use-file-extension option to babel-cli

* refactor file extension logic

use existing methods from path module

* Rename use-file-extension -> out-file-extension

* add error message if bot keep- and out-file-extension is used

* add test for error when mixing --keep- and --out-file-extension

* poke travis
2020-01-10 03:02:52 +01:00
..